Would you trust a Temu 80A electrical connector?

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Without full metallurgy tests it's hard to say exactly what alloy this electrical connector is made of. The attraction of a strong neodymium magnet was very slight, even with the outer plating and nearby steel screws removed. I'll guess a brass alloy with a nickel plating.
A subsequent test on random brass plumbing fittings also showed a very slight attraction of the same magnet.
Brass is technically an alloy of copper and zinc, with the colour being affected by the ratio. With the cost of copper these days, it's no surprise that it looked a light golden colour, suggesting more zinc than copper. Then again, I'm sure there are probably cheap alloys being made that look like brass to cut costs.
In this application the chunkiness and very close vicinity of the coupled wires is probably a benefit for the application of acting as a single pole power distribution block.
China has a huge manufacturing industry, so it's no surprise that they have a lot of machine components at fairly low prices. This block cost £3 which compared favourably with a similar distribution block from a UK seller at £12.
I'd consider this block for personal panel projects, but not for an industrial application where the cost of machine down-time makes the use of prominent brand items more important.
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:- www.bigclive.com/coffee.htm
This also keeps the channel independent of RU-vid's algorithm quirks, allowing it to be a bit more dangerous and naughty.
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7 май 2024

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Комментарии : 453

@IDontModWTFz 23 дня назад

All I read was "would you trust a temu" and instant said no.

@mikestewart4752 23 дня назад

Same. Not even an option.

@gutsngorrrr 23 дня назад

Same

@dr.zarkhov9753 23 дня назад

Precisely 😊

@dahahaka 23 дня назад

All my homies don't trust no temu

@Pyxis10 23 дня назад

I was about to make this exact comment.

@fuller9x 23 дня назад

You should hand it off to PhotonicInduction to test the 80A claim

@PapaLurts 23 дня назад

Well he'd probably start with 80 kA just for fun. ("Oops looks like I've misread that")

@teardowndan5364 23 дня назад

@@PapaLurts "Oops, popped it!"

@Tuning3434 23 дня назад

I'm sure Andy is doing great (I sure hope so), but we are all missing out on some great potential collaborations. I would so much like a coop between Clive, Andy, Mehdi and lets throw in Techmoan and 8-Bit-Guy for the memes.

@iamjimgroth 23 дня назад

How is he still alive?

@GABRIEL-dz9mh 23 дня назад

Or just save on the shipping and test it with an 80-120Ah car battery

@SeahamV2 23 дня назад

Quality of plastics is always a good sign of decent products.

@joe125ful 23 дня назад

Hahahaha China:)

@4362mont 23 дня назад

I opine that poor plastics are bad, and better plastic is meh.

@markiangooley 23 дня назад

Legos are made of good quality ABS. We could fool a lot of people into expecting better quality by using more ABS plastic in things.

@joe125ful 23 дня назад

@@markiangooley Yes but its expensive and verry accurate too.

@jhsevs 23 дня назад

@@markiangooleyit depends on the use case. And bad abs exists. Abs is not oil resistant, it doesn’t even work with vegetable oil. Btdt.

@NessieStudio 23 дня назад

>"bottom out" >"i shall grind this bottom" the innuendo. 😳😳😳

@dieseldragon6756 23 дня назад

I'm pretty sure this is why Big Clive content *always* leaves me with a warm feeling inside... ❤‍🔥🏳‍🌈🍾😉

@malcolmwhite6588 22 дня назад

@@dieseldragon6756 you dirty wee man!😂

@purerhodium 23 дня назад

Iron is very poorly soluble in both the alpha and beta phases of brass, so it precipitates as a ferromagnetic secondary phase, which could explain the slight attraction to a magnet. As for the naming, the Chinese term for brass is literally yellow copper, so it often gets mistranslated as just copper (or more likely "mistranslated", if you catch my drift).

@mikropower01 23 дня назад

I think the screws are made from steel and he did not removed them as he tested it, so they are this what was ferromagnetic, not the brass itself.

@Tuning3434 23 дня назад

@@mikropower01 That must be some incredible powerful magnet, if it still attracts anything a good few centimeters away from a ferromagnetic material.

@robertbackhaus8911 23 дня назад

It looks to be nickel plated, and nickel is ferromagnetic.

@kosir1234 22 дня назад

nickel is magnetic...

@mikropower01 22 дня назад

@@kosir1234 - There is a big steel screw within a distance of 3mm of the Neodym magnet.

@oreubens 23 дня назад

tin is paramagnetic, so it'll be slightly attracted to a magnet. a nickel plating would make it more attractive... and more expensive. As for the "brass"... 954 aluminium bronze "looks" like brass and has about 5% iron, which will make it slightly magnetic. It's a common alloy for plumbing fittings. It's considerably cheaper than brass. it's also has like 4x as much electrical resistance. Best way to tell the difference is to drill it. Brass drills easily 954 is harder to drill and is very "grabby".

@benespection 23 дня назад

With such a quality connection this would make, at 80A you may also find it doubles as a space heater. I can imagine the fun, melty goodness that could come from something like this when running at 80A!

@mikemondano3624 19 дней назад

My home lightning arrestor claims to handle 100,000 amps. Funny there don't seem to be any cables large enough connected to it. Maybe they count the bolts that pass it by.

@chrishartley1210 Месяц назад

If the plating is nickel it would explain the slight magnetic effect. I wonder of it is still magnetic when all the screws are removed and the plating ground off.

@TheChipmunk2008 Месяц назад

yep came here to say that, thick nickel plate is certainly magnetic

@clivequinn8978 Месяц назад

“I shall grind the bottom here” slip of the tongue, ooh err.

@barrieshepherd7694 Месяц назад

@@TheChipmunk2008 Likewise - Great minds and all that!

@bigclivedotcom Месяц назад

I removed the plating and screws and it still had a very slight attraction. I also tested the magnet on a couple of brass plumbing fittings and it had a similar light attraction.

@TheChipmunk2008 Месяц назад

@@bigclivedotcom interesting

@fredbear3915 22 дня назад

My eyes were looking at the end of the title for the obligatory "With Schematic"... now that would have been an interesting view!

@JackieBright 20 дней назад

Here's the schematic for anyone interested: ┌o-o-o-o┐ └-O-O-O-┘

@skyepyro7104 23 дня назад

I've seen that silvery "brass" alloy in many cheap electrical devices, it's always super brittle with huge grains in the metal. I always figured it was basically pot metal from whatever scrap they had on hand, as they don't seem to be too picky about meeting specifications.

@dimitar4y 23 дня назад

yep. If you torque to spec, it just bursts.

@ragetist 23 дня назад

Chinesium can be pretty hit and miss, they have a saying that basically goes "you get what you pay for" and if you try buying for cheap without proper connections you'll definitely get scammed.

@AnnaVannieuwenhuyse 23 дня назад

White brass like this is pretty common in other places, like taps and the likes. It is absolutely the wrong kind of brass to use for electrical connections. White brass is not intended or remotely a good idea for situations where any plastic deformation is required.

@dieseldragon6756 23 дня назад

You'd have to be _on_ pot 🚽 to trust that any alloy coming from Temu is anything close to the claims made in the listing... 🍁😉

@bosstowndynamics5488 23 дня назад

The main thing I would be concerned about is if they always send the same item when ordering from the listing. No guarantee that they don't swap out what they're selling at some point for something much sketchier.

@dieseldragon6756 23 дня назад

Exactly what I thought. Temu could easily throw out _Good enough_ product up to the point several high-profile RU-vidrs review it, and *then* start shipping out the _real_ Chinesium... ⚠

@bosstowndynamics5488 22 дня назад

@@dieseldragon6756 I was thinking more likely that they would open up shop running at a loss to build a customer base and reputation before cutting costs right down to the bone, but accumulating RU-vid reviews is definitely a possibility as well

@scaredyfish 22 дня назад

Yeah, that’s the problem with TEMU and the like. You might get something perfectly adequate, but you just don’t know. That’s what reputation is for: to have confidence that you can trust the product.

@danwhite3224 23 дня назад

That's almost certainly nickel-plated brass. In regards to the 80A rating, I reckon it could probably take 80A fairly well - It looks thick enough. I'm surprised that a Temu product is actually fairly legitimate.

@uNiels_Heart 23 дня назад

Yeah, in that case the CE sign one could spot on it might actually be genuine

@dr_jaymz 23 дня назад

I agree and I've seen stuff we pay a lot more for and completely cut down to the bone. Looks ok to me.

@Basement-Science 23 дня назад

its not like Temu actually manufacture anything. This is just like any other chinese product, sold without any accountability through a large company. To me the question often is, would it actually make financial sense to produce a really bad version of a product? The market of people you can essentially scam with niche industrial parts is probably not worth it, so you're probably better off producing something actually usable.

@getahanddown 23 дня назад

Repeatability is a real problem. You don't know if the next order came from the same factory

@einfelder8262 23 дня назад

I agree - here in Aus, a Weidmuller block is $95 vs plenty of variations of the Temu item at $10-15. Many of the cheapo ones have certifications stamped on them, but who knows if they're genuine. Anyhow, I'd happily use this block for projects, just not in my house electrical box where a fire started by such a thing would void insurance.

@christastic100 23 дня назад

Flame 🔥 test on the plastic would possibly be interesting.

@dr_jaymz 23 дня назад

Its pretty easy to make it retardant I'd imagine it is ignition protected. But only one way to find out....

@Tuning3434 23 дня назад

.. and check if you can carbonate it, please. For science.

@marcux83 23 дня назад

😂😂😂@@Tuning3434

@jpt3640 23 дня назад

Our electrical material heavily relies on PVC, so i always believed it to be highly flammable. Isn't it?

@azrobbins01 23 дня назад

But if you order it again, will you get the same thing?

@bigclivedotcom 23 дня назад

That's always an unknown variable from China.

@robertsneddon731 23 дня назад

Finding the density of the block would help. Take out the screws first, weigh it and then use a measuring cup to see how much water it displaces. Worst case with something like that block, measure it accurately and make allowances for the holes to figure out its volume. I use density this way to separate out Zamak scrap from aluminium for melting and casting.

@deltab9768 20 дней назад

Eureka!

@stevetobias4890 23 дня назад

I would trust it to 30-35 amps for personal projects.

@mattsan70 23 дня назад

brave man

@stevetobias4890 23 дня назад

@mattsan70 why it's less than half of the rated amperage

@kapioskapiopoylos7338 23 дня назад

@@stevetobias4890 Well the clamping system to begin with. It is garbage at making great conduct with the wire (not bad for like 6A applications), which at 80A is crucial. It is the same single screw you find on the cheap terminal strips, it should be at least 2 screws per wire at 32+A and preferaby with a clamp, not just a screw, so the wire is making contact through its entire surface. And at these current ratings, i better see plated copper, both for heat and for conductivity. Plus it is temu, this one is brass, the next is inox steel, the other is made from scrap metal with chrome spray paint.

@AttilaAsztalos 23 дня назад

Yeah, my concern is also less with the block itself and more with the quality of clamping - If your block starts to melt, it won't be because not enough copper, it will be because your contact resistance is shit.

@potappotapov1815 22 дня назад

Yeah, that checks out with my experience

@AndyFletcherX31 Месяц назад

I've used them for battery systems. - work well and don't heat up at the rated load. I've mostly screwed them to the enclosure backplate but have put them on DIN rail in the past. Just make sure you properly tighten the hex screws.

@RichardSchuldt 23 дня назад

Love this type of content! Happy you made it over 1 million followers, I was in around the 300k mark.

@gpo746 20 дней назад

I would trust it about as much as Gary Glitter in a kids home .

@rick1368 20 дней назад

such a sophisticated measurement tool

@piconano 23 дня назад

The contact screws being made of steel, is the weak link. They didn't spend the extra for brass screws.

@johns1623 7 дней назад

"Eriflex" is the brand we use at work. We use them with 480 for small power distribution.

@ianhadfield65 23 дня назад

These look absolutely spot on for earthing blocks in camper conversions

@dieseldragon6756 23 дня назад

Dunno if I'd trust _anything_ from Temu for CPC purposes, especially after seeing some of the fault currents you can get flowing through PME links as demonstrated in other videos on this platform... ⚡🔌🌍😳

@NickToland 23 дня назад

They are great and modular with a connection clip on the side. I have used them up to 300A

@saxon215 22 дня назад

If you'd like to see this tested for it's resistance let me know, I'd be happy to put between 600-800 amps through this and do a little video on how low resistance testing of terminations is done.

@jaylittleton1 22 дня назад

Three ports on the 6 mm side, so can do 3-phase leads in one of those! Brilliant design.

@stickyfox 11 дней назад

I designed an earthquake simulation lab apparatus that used 460VAC power to pump massive amounts of water thru a very small and cramped lab. I kept asking for water ingress-protected enclosures and controls but they're expensive... so eventually when the dean, dept chair, and two visiting grant program managers came to witness a demonstration I had our usual safety brief and said, "and as always I cannot stress how dangerous this side of the room is; please just do not come over here, look at, and especially do not touch anything. These circuit breakers are here to protect the building from fire and will not activate if you become part of the circuit." The next day I had my capital expense approval for a whole new electrical cabinet. With name-brand parts!

@mikropower01 23 дня назад

Nice that you have tested it.

@lukerichards1188 23 дня назад

Innuendo bingo: “I’ll go deeper” “Let’s bottom this”

@dieseldragon6756 23 дня назад

His content _always_ leaves me with a warm feeling inside... ❤‍🔥🍾😉

@patchvonbraun 23 дня назад

I've just started to embrace DIN-rail stuff at the observatory. Not for power distribution, but organizing our motion-controller cabinet. I had previously thought that DIN-rail stuff was expensive, but in general, that's not the case. Soooo, coming up with ways of mounting "weird things" to the DIN rails we're putting inside the enclosure. Mostly based on generic circuit-board mounting brackets for DIN rails--they can be adapted for other uses with the addition of off-the-shelf angle brackets and the like.

@patchvonbraun 23 дня назад

There's a metric crap-tonnne of "custom DIN-rail mount for " on Thingiverse. If we had a decent 3D printer...

@SystemX1983 23 дня назад

for mounting PCBs on a DIN-Rail we use brackets from Phoenix Contact or Weidmüller... they sell a plastic profile that can be cut to the desired length and end/mid brackets for mounting

@robwulz3493 23 дня назад

Looks pretty good !

@Frankhe78 Месяц назад

It seems good enough for hobby projects, but for actual installations I would not risk it and get components from a reputable seller. Just to make sure.

@laustinspeiss 22 дня назад

Are your hoppy 80A different from domestic supply ? Assuming the cheap plastic is still there holding it off the metalwork.

@fredflintstone1 23 дня назад

Interesting but what about the protection for the smaller cables?? or are the smaller cables inputs??

@landroveraddict2457 18 дней назад

The slight magnetism was probably the steel screws. Zinc will vaporise well below the melting point of iron so a zinc, copper, iron alloy would be very difficult to make. I suppose the silver coating could be Nickel which would make it slightly magnetic. If it's Nickel coated brass then it is pretty scookem.

@u.e.u.e. 23 дня назад

Maybe not for 80 A permanently in a hidden spot. 30 to 40 A where you can look once in a while or have easy access: yes. I like the fact that they clearly marked the cable sizes for in and out! About the material: the "brass" is very pale. So I tend to say it's something between brass and "Neusilber" (new or fake silver). They probably reduced the copper percentage of the alloy and replaced it with nickel. Advantage: firmer material. Disadvantage: more brittle and higher electrical resistance. So: under certain circumstances usable.

@marcogenovesi8570 23 дня назад

the brass is a lie, as usual

@u.e.u.e. 23 дня назад

@@marcogenovesi8570 How do you know? Did you visit clive, took the connector from him and made an analysis? Maybe you can present us the exact composition as you claim to know it.

@snakezdewiggle6084 23 дня назад

At least there is no head on the screws. Could we maybe have a Resistance test of the alloy material?

@AndyBeez 21 день назад

Perfect for use in DIY lightning conductors 🌩

@larry785 22 дня назад

YES! I would! But only up to ten amps.

@RK-kn1ud 23 дня назад

Considering you can run about 80 amps continuously down 8ga wire, I'd say there's probably enough material there for 80 amps to flow through. Gotta get a TIG/Stick welder to generate 80 amps for testing purposes. lol.

@thomasdalton1508 23 дня назад

I agree, there is enough material there. It is the quality of the connections that is probably the biggest issue. You need a very high quality connection to put 80A through it safely. This looked like it should be capable of forming good connections, but that is what I would have tested.

@rich1051414 23 дня назад

Naval and architectural brass have quite a bit of iron in the alloy and are mildly magnetic.

@sparkyprojects 23 дня назад

would 25mm^ (73A) or 35mm^ (90A) actually fit in the holes ? You might just about get the 25 in there, though i wouldn't trust it for 80A, i would like to see double screwed connections.

@zos8085 21 день назад

When PEX water pipes came in, the Chinese brass had 15% zinc in it that caused problems. Then mixer taps (brass) had some lead content over the permissible levels. Don't know if UK enforces import standards, but different countries seem to get different product. Perhaps it would be a hoot to have a UK metal machinist too up a drop in , identical magnesium connector block.

@TruckinBeagle 21 день назад

I continue to be surprised by the fact I haven’t been dissatisfied with anything I’ve bought off Temu yet. And I’ve bought a lot! 😂

@deang5622 19 дней назад

I have not bought anything of Temu. And I won't ever.

@Elberto71 23 дня назад

A couple of these will be Handy for distributing 12vDC round the shed

@generaldisarray 23 дня назад

Speaking of electrical panel fires, and I know this is more aimed at domestic CUs, but any thoughts on the EnviroBurst Automatic Fire Suppression System tubes??

@fluffyblue4006 20 дней назад

Before deciding to trust this device by looking at it: Look up the lug torque specification of a similar device of a reputable seller. Tighten the lugs of the Temu device to the reputable device's specified torque specification. Now you're ready to decide whether or not to trust that Temu device.

@wesleypotter7969 9 дней назад

looks like a copy of the Erico UD-80A, so bottom connections = 3.5 Nm top connections = 1.2 Nm

@marcusf.6722 22 дня назад

In Australia, trust Middendorp Electrical stores.

@somethinggeeky 21 день назад

I use that kind of thing all the time at my day job. Automation Dircect has good prices. Not sponsored, we buy their stuff all the time.

@scottkludgedorsey4805 23 дня назад

Check hardness.... just a quick test with a springloaded centerpunch will probably show this to be cartridge brass, which is gummy and kind of horrible to work with but very popular among the Chinese manufacturers. Likely fine for the application where you're not screwing those screws in and out all the time but not a good plan if there is a lot of reconfiguring going on.

@mikemondano3624 19 дней назад

Absolutely! I'd trust it completely. (Wait. Did you mean as an electrical connector?)

@TheEmbeddedHobbyist 23 дня назад

when Hell freezes over, but it never will with products like this adding to the heat. :-)

@Gazr965 23 дня назад

You can get brass alloys that have a touch of iron and other metals in the recipe, most brass is 70 copper and 30 zinc, for acetylene gas components I think they use more zinc in the mix to prevent copper acetylide forming which can be explosive. Gaz Yorkshire.

@patchvonbraun 23 дня назад

The brass alloy is probably an alloy with a low (50% or slightly less) copper content. Saves them on materials costs. Bulk conductivity wouldn't be as good as alloys with more copper in them, also somewhat more brittle than a higher-copper brass alloy.

@dieseldragon6756 23 дня назад

My estimation would be 0,5% Copper, 2,5% Nickel, 77% Aluminium, and 21% _„finest“_ Chinesium... 😉

@ruben_balea 23 дня назад

I guess it can be cupronickel, some types of industrial quality PCB mounting terminal blocks and connectors are made of it too.

@Slikx666 23 дня назад

I still haven't bought anything from temu, I'm still alive! 😄

@mxslick50 22 дня назад

"I shall grind the bottom" says our favorite bear on a Saturday night. 😁

@getyerspn 22 дня назад

The nickel plating will be very slightly magnetic.... More of me worried about the flame resistance of the plastics .. its not just about the item itself but what happens if a nearby component goes on fire ... Will the plastic in this temu item catch fire quickly.?

@jussikuusela7345 22 дня назад

UKK... Urho Kalevi Kekkonen. Kekkonen, Kekkonen, Kekkonen, Kekkonen, Kekkonen. There would also be a "red brass" alloy that has a very coppery hue to it, but I wouldn't trust the stuff with threading screw holes into it or at least significantly torquing said screws. It is common in trinketry and belt buckles etc, usually plated with a dull silvery coating that may be further stained. The coating will wear off and reveal the coppery color when brushing against clothing long enough, and the stuff will also sometimes develop greenish-greyish tarnish when exposed to skin secretions.

@vhfgamer 23 дня назад

Sure I'd trust it at 80mA

@dieseldragon6756 23 дня назад

80mA seems a bit much to trust a Temu product with. 80µA _might_ be OK...But *only* if you tighten those screws down really, _really_ tight... 😉

@GABRIEL-dz9mh 23 дня назад

Silvery magnetic plating means nickel, very common for brass to be nickel plated. Some IEC60309 plugs also have nickel plated brass prongs

@keithjurena9319 22 дня назад

Strong magnets can empirically demonstrate electrical conductivity via diamagnetic repulsion.

@adrianohaha7659 22 дня назад

Take all the screws out before sticking the magnet?

@jamesdurber88 21 день назад

nice video, but i wanted to see Flames! 😀

@checksumcharlie 23 дня назад

“I shall grind the bottom here” - I did grin.

@frankowalker4662 23 дня назад

It has the BC seal of approval.

@clarissevanrossum4 22 дня назад

Help me out here, what are you looking for with the magnet? Is magnetism a good sign for electrical conductors or would you prefer something non-magnetic? I also enjoyed how you demonstrated three separate ways to use a pair of calipers, I just learned it is a depth gauge as well 👍

@bigclivedotcom 22 дня назад

I was looking to see if it was plated steel.

@Len_M. 21 день назад

Anyone have a suggestion for a Wire Ferrule Tool? I’m building some Bi-Amp 10ga Speaker Wire and I want to put Ferrules on each of the four Wires so they look tidy going into the Banana Connectors that have Allen Key Grub Screws. Never used Ferrules before but they look great for this purpose. Tool and Ferrules would be appreciated. 🙏🏻

@bigclivedotcom 21 день назад

To guarantee that you get proper copper ferrules, I'd recommend you get them from a proper electrical/electronic distributor in your country. The crimping tool should be OK to buy online though.

@ShadowzGSD 23 дня назад

looks surprisingly decent for £3, would probably be ok for 40 maybe even 60Amps, although i am immediately drawn to the case trying to think of another use for it.

@deltab9768 20 дней назад

In a panel running for long periods with the cover closed and no supervision: hell no not even for personal use. In the open for a quick test setup while I’m watching it: I’m feeling more comfortable going past the rating with this than with the UL listed name brand ones. If it fails it’s not expensive to replace.

@brouwereric644 23 дня назад

Ideal test object for an Omicron CPC-100 and FLIR C3-X. Test at 80A for 1 hour, then 160A for 30 minutes...... Not sure if the 200A test leads will fit on both sides of the connector (large holes).

@Fine_i_set_the_handle 23 дня назад

I actually have some similar looking units in service at work but the front plastic cover is a baby blue. Maybe if i remember i will report back what brand those are. I wonder if they're made in the same place or if this is a clone made by temu based off the original. Not sure why this has 3 inputs in the top though. As i recall the ones we use at work have a single large input at the top and 6 outputs from the bottom.

@ryanroberts1104 22 дня назад

Its AMAZING the conductive differences between pure copper, brass, and anything else. GOOD brass only has about 1/4 the conductivity of copper! Chinese who knows what brass...less.

@spokehedz 23 дня назад

I can't be alone in the "Buy three of them, test one to failure, and then use the other two at half the rating" mental thinking? Especially for prototype stuff where I just want some isolation/organization, and not really going to push it to the absolute limit.

@capitalinventor4823 20 дней назад

Testing just a single item to failure doesn’t inform one of very much. It’s possible to have an outlier as the test item (either as a poor quality junk or an example of how good the product may be). A small test sample with an odd number of items, starting with at least three, would be better. Using two samples one is not able to identify the outlier if the results of one are significantly out of line with the other. (Having an even number of samples in general allows for a situation in which all results fall within two groups evenly.) Ideally, if one is concerned about the quality of a product such as this, it would be wise to test every component at the promised maximum performance guarantee for at least a short time period and perform a longer test a value that is a bit higher than the expected load it will be under in daily use. This way if the item is unable to meet the job requirements one should find out early on. (I did say should find and I’m not promising parts won’t fail later on.)

@Dime_Bar 23 дня назад

That's a useful function as I was wondering how the hell is he going to measure the hole depth using that.

@rarbiart Месяц назад

Oh no, another video without schematics! ;-)

@johnkey1682 22 дня назад

It's probably a leaded brass alloy, the RoHS brass is more of a reddish colour. (Naval brass- bronze)

@llary 23 дня назад

This is a copy of a TE Entrelec DBL80 distributor. Considering they are about $10 each for the genuine UL listed EU made part I don't know why you would risk anywhere near 80 amps through the Chinese knock off.

@MHM1975 23 дня назад

Amen!

@einfelder8262 23 дня назад

I'm guessing it's only rated at 80A to imply a limit of 20A on each of the "outlets". Probably the first thing to break down with higher currents, which the block could easily handle, would be the cheap plastic melting. I used a similarly cheap knockoff DIN mount double pole isolator on my small solar input circuit, maximum 20A at 45V is never going to worry it. The branded item Schneider is ~$130 Aussie bucks and the knockoff was $8 shipped.

@TheBlibo 23 дня назад

The brass may have some nickel in it that may account for it weakly attracting a magnet. Anyone out there know better?

@niklasskurdal8970 22 дня назад

It looks like it's based on the ELIT UD80A/ERICO UD80A. With a cheaper plastic for the mold, necessitating a spring based DIN mechanism.

@RolandW_DIYEnergy 23 дня назад

Those UKK Terminals exist already far longer then Temu. I am using them for years and as they fit on DIN-Rails, they are very practical. The bigger brothers like the 125A versions I do use as Main Busses in a Powerwall where currents go up to 95A regularly. Much bigger issues are for example the Chines breakers. Those fail on me frequently.

@Zadster 23 дня назад

Whipping out the single entendres there.

@DUDA-__- 23 дня назад

I trusted those 240v 10a relays, and the contacts fused after 10 circles.

@marcogenovesi8570 23 дня назад

that's a lot of amps

@DUDA-__- 23 дня назад

@@marcogenovesi8570 i "only" put about 4 amps thrpugh it, but i as a novice i didnt know about inrush current. Welp now i know what to look for in relays.

@lasskinn474 23 дня назад

for a distro block on some 3d printer build, meh, sure I would if they had these at the 20 baht store. very least you get a bunch of grub screws.

@satyris410 23 дня назад

I feel like such a boss because I've got the same skookum £5 ebay special vernier calipers as Clive

@bigclivedotcom 22 дня назад

There's a video showing the construction and insides of them.

@psychomarto 18 дней назад

From Temu? I would trust it as much as I trust a baboon with a gun pointing at me not to shoot me...

@ChrisD4335 22 дня назад

its fine id use those all day

@RAdcock-rs7nx 6 часов назад

I'm wondering, that "tin" plating looks a bit too shiny for tin. I suspect it's actually Nickel. Guess what? Nickel is magnetic, hence the weak attraction.

@napalmholocaust9093 23 дня назад

Speaking of steel screws... how do solar systems get away with having bolt connections? I've see things like two lengths triple naught (/000) wire terninated with a copper eye and just an 6-8mm steel bolt to keep them together and instinctively shudder. Is there an expectation that the reverse blocking diode (100a assumed for this exercise) will prevent over current events that would be much greater than power normal consumption? Is it the weak link assuming proper tight connections? I very rarely see setups after fires to clarify if went nuclear from the batttery cables. I do realize that a big inverter will have a row a 30 amp fuses in it, plus a breaker on the panel input at the otber end. Still don't like steel bolts for cables around the batteries.

@bigclivedotcom 22 дня назад

The solar industry seems largely driven by profit over technical competence.

@Dinco422 23 дня назад

Clive, are you squirmy about dremels ? I mean with grit paper I'm not that afraid of it, but with saws, them going at 12000 rpm is kinda scary... While I cut some stuff in the past some blades flew past me shattering on every wall, luckly I was not in their way... maybe they were cheap blades, they were the ones that came in the same set as the ones I bought from LIDL.

@lasskinn474 23 дня назад

have something in front of the eyes. you can get like saw/router bits that are just like a router bit though they tend to not snap like cutting wheels. really with the drum sandpaper things you can cut a bunch of plastic too it really eats through stuff(and doesn't shrapnel same way).

@bigclivedotcom 23 дня назад

I always have my plastic lensed glasses on, but also position myself out of the direct path of a shattering blade.

@whitcwa 23 дня назад

Well brass is an alloy of copper and zinc. The pale color implies it has more zinc than what we usually see. Too much zinc will make it brittle.

@zilog357 20 дней назад

The shiny plating looks great, but nothing like copper. Brass has a relatively higher resistance. When it comes to ohms, it is little, but even that little has major effects, like too much heating when it comes to high currents like the 80 amps mentioned and especially using AC. My answer is no, I would not use it.

@dimitar4y 23 дня назад

If you torque to spec, it just bursts. if it heats up a little from use, it will get loose and cause a fire next overload.

@bertblankenstein3738 23 дня назад

Well initially it was a hard no, but on review, it doesn't look as bad as I first thought.

@garyhart6421 23 дня назад

We had a Power Cut last week --- turns out the main switch on the consumer unit burned out ! It was only 4 or 5 years old and not exactly a high usage/cycle item.

@carneeki 23 дня назад

Could it be an aluminium-brass alloy? I think the light colour made it hard to tell, it looked like plain old aluminium to me. A simple test of the weight and volume (take the screws out and dunk it in a graduated cylinder of water) will enable one to calculate the average density, that might yield some more clues to the composition. Copper is pretty dense so if it feels heavy that's a good sign. Sure they could have smuggled some lead in but I'm guessing that's unlikely.

@junkerzn7312 23 дня назад

Well, its a solid metal block so obviously it can handle 80A. As long as it is plated the brass is fine. The question is primarily one of screw retention / the wire interface. It looks quite reasonable as long as the screws aren't easily stripped out. I would definitely use ferrules for any wiring (yes, those would be some huge ferrules), but it will improve the copper/tin interface, the retention, and provide a bit of protection as well as reduce excessive bending of strands as they leave the holes. A good litmus test, actually, is to determine the largest ferrule that fits into those holes, that it reaches across the screw cross-hole, with the ferrule's plastic shield fitted into the hole, partially fitted, or outside the hole (three different sized ferrules for each size hole). If you get a good fit there is basically zero chance of having electrical issues. -Matt

@robertalabla 23 дня назад

Hi Clive. It looks like you may have a fungal infection ( like athletes foot) on your left hand. I sometimes get similar from sweaty hands in work gloves that don't get dried out properly. I have found that use of a generic athletes foot spray on the affected area clears it up in a few days.

@project-hobby 21 день назад

Yes if I want smoke of course

@bewilderbeestie 23 дня назад

Weigh it, do an Archimedes to determine the volume (without the screws, natch) and you could compute the density. That might let you figure out what kind of brass it is. It's probably one of the standard alloys.