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DIY 24 Way Bus Bar installation. Battery 2.0 

Off-Grid Garage
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From the off-cuts of the original copper busbar, I'm building two heavy duty 12 way busbars with M8 studs. It takes a loooong time to prepare, drill and tap all holes into this 10mm copper. The result looks great though and we're making good progress...
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13 ноя 2021

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Комментарии : 229   
@johnwyman6126
@johnwyman6126 Месяц назад
Thank you for making this video, it gives us great ideas on how to do things better, and more cheaply than just buying cheap junk. Don't forget to always use stainless steel fasteners. Regular steel fasteners contain carbon. Carbon is used to make resistors. I have seen high current connections melt down simply because of a carbon steel fastener. If you use longer bolts coming up from the bottom, you will not be relying on the soft copper threads that may loosen, or pull out. Using stainless studs on the standoffs will give you a couple more connection points if you ever need it.
@russquest8161
@russquest8161 Месяц назад
Thanks for the DYI video. It was an excellent job😊
@djsmiley01
@djsmiley01 2 года назад
Nice bar! I would suggest raising 1 bar, so any wiring can be straight and don’t require a bend to go over, underneath the other bar. (So both wires are on a different height)
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
It needs be bend down anyway to sit flush on the plastic. I thought about a riser for one bar similar to what I did in the cabinet with the busbars. but here it's better if they run in parallel in the breaker panel.
@martink9785
@martink9785 2 года назад
It's great to see progress 🙂👍
@SuperBrainAK
@SuperBrainAK 2 года назад
wow that is looking really nice!! I do like the fact that you put your chargers on the end of the bussbar so you have the charge controllers feeding power into the interter on the far end and batteries feeding the inverters on the near end. That is how I would do it!
@philipmorgan1438
@philipmorgan1438 2 года назад
Shouldn’t be depending on threads in copper to allow tight connections. As others have noted, you should use bolts, nuts, and wavy washers for secure connections with wire lugs.
@2flight
@2flight 10 месяцев назад
I watch little bits of your videos just to remind myself what I went through with my own 4kw system. The learning curve is harsh and the money for little bits and pieces just keeps flowing. Thank You for posting.
@OffGridGarageAustralia
@OffGridGarageAustralia 10 месяцев назад
This shelf was a big project for me. At some point, I thought I will never finish it...
@excillisbank2611
@excillisbank2611 2 года назад
Très beau travail ! hâte de voir la suite... :-)
@lennieadi
@lennieadi 2 года назад
Excellent work 👊🏾🇬🇧🇯🇲
@igornedashkivskyi1472
@igornedashkivskyi1472 Год назад
Nice job!
@ricardomarcelino8388
@ricardomarcelino8388 2 года назад
Great work. Nice to see steady progress on the power shelves. I am very excited about this project, as you go I think "I can do this, and I also have that tool... Where can I buy that thick of a bussbar???" You got me dreaming about this... Poooowaaaaa! Love your channel. P.S.- I like longer videos, everything else in RU-vid can wait. Off-Grid Garage comes first all day, everyday! Keep up Andy. May the force be with you and... Your drill's battery...
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
Thanks a lot Ricardo!
@loucinci3922
@loucinci3922 2 года назад
My OCD wants to spray paint the red stand-offs black for the negative bus bar....Looks great. Just the right length. Thanks for sharing.
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
They are always red, regardless 😉
@richlee5516
@richlee5516 Год назад
Looks great. I chose to use 40 x 5 mm copper, pillar drill accurate 8 & 10 mm holes then use bolts inserted below with locking washers and nuts above. This way you can use a torque wrench right up to around 20Nm for M8 and have a really good tight connection without risk of the bolt pulling out of the soft copper. I also use No Ox Id A electrical contact grease.
@wayne8113
@wayne8113 2 года назад
Thanks Andy
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
Any time!
@mikedurham4448
@mikedurham4448 2 года назад
somone may already say .. acetone into the crack and presto .. welded freind used to bbuild shop counters out of the stuff .. amazing how the do stuff when u know .. must b vid somewhere .. excellent motivating us all to do better ..
@jamesboardwine9746
@jamesboardwine9746 Год назад
Nice job Andy, option for lugs to go over or under if they interfere with each other. + & - , very impressive. I'm learning by watching others, Happy Thanksgiving.
@igorkvachun3572
@igorkvachun3572 2 года назад
Yes 👍 🔋⚡💡
@daskasspatzle2396
@daskasspatzle2396 2 года назад
Yes, this look solid 🙂
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
It was always the plan to use these off-cuts of the bus bar for this purpose.
@q95oldies57
@q95oldies57 Год назад
Nice. Good job.
@OffGridGarageAustralia
@OffGridGarageAustralia Год назад
Thank you.
@farside87
@farside87 2 года назад
I must have missed something earlier on the design of your battery bank shelf system. What I'm imagining is your Battery bank#1 on bottom shelf, Battery bank#2 on middle shelf, Charge Controller inputs and Distribution output connections to Inverter on top shelf. If this is what you are doing, I admire the forethought of you putting the Charge Controller high enough up on the wall. 👍
@ronwest7930
@ronwest7930 2 года назад
For some people it's drugs or booze, For Andy, it's his solar power obsession. Your viewers understand.
@upnorthandpersonal
@upnorthandpersonal 2 года назад
Nice bus bars!
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
Thank you!
@oze-bikes4life663
@oze-bikes4life663 2 года назад
Its looking Good 👀👍 A nice Acrylic DIY Buss Bar "Cover" would finish off both bars nicely. Ofcourse it would require cut-outs at each lug/cable termination, but would make both bars extremely safe. A Similar design to a 240V Neutral link Cover, found In most Domestic Switchboards installations. I'm Looking foward to your next video. 😊👌
@ronny7380
@ronny7380 2 года назад
Super Video. Mh super Meterstab.
@michaelwausr1336
@michaelwausr1336 Год назад
Handwerklich auf Sicherheitsspielraum ausgelegt. Schön anzusehen. Das Englisch ist sehr gut zu verstehen for a German.. ))
@jmaus2k
@jmaus2k 2 года назад
When its done can you do some slow motion video of dropping a screwdriver across the bussbars? Its for science. Lol.
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
Yeah, looking forward to that test! ⚡
@PhilippeCJR
@PhilippeCJR 2 года назад
Thats what I call a busbar!
@garysmith2104
@garysmith2104 2 года назад
Andy, try on a scrap piece of plexiglass drilling a hole with a drill bit that has a blunt cutting edge. You might find that it won’t grab when it breaks through. And crack the plexiglass
@marcusschmidt2363
@marcusschmidt2363 2 года назад
Hey just throwing my 1 and 1/2 cents in the mix... someone mentioned bus bars to be different levels which i agree with. An additional thought to that is a plastic resting shield with a radius edge to hold up the wire from the back row off the front row. Second thing would be off set the lug alignment by 1/2. So as to have the back row wire come straight out between the front row lugs. Just a thought. Thanks for what you do! Marc.
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
Thanks, Marcus. There will be shielding once the cables are in place. I thought about a bit of off-set but it's not necessary as the bus bars are around 100mm away from each other which gives me enough room to have them running in parallel to the breaker panel.
@Pegasosreborn
@Pegasosreborn 2 года назад
toptip; drill a little 2mm hole at the end of the cracks, sow they won't crack any further... top vids, greets from holland!!
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
Thanks for the tip. I'm not too concerned about the cracks as there is no mechanical strengths on the plastic, so they won't crack further. I have no watched a few videos on how to drill and also cut Acrylics. Easy to avoid these cracks if you know how... no special tools required.
@danksu04
@danksu04 2 года назад
Andy, I watched this some months ago and never really questioned, “to thread or not to thread”. Seems like comments are all over the place on that topic. I have my opinion on it, but curious why you decided to thread. Thanks for these videos, really enjoy your content!
@marcobrian1619
@marcobrian1619 2 года назад
Andy, quick tip, you need drill taps not standard and taps.... I'll try and send you a picture of some I have.....work great in most metals. Tip with plastic drilling.....more speed less pressure....in fact hold your drill off. Hope all goes well with the shelf's Best wishes Marc
@bogo19975
@bogo19975 2 года назад
Nice bus bar, when I drill perspex I use a step drill bit and some morning fresh for a cutting compound find I don't get the cracking.
@JanisMarxcors
@JanisMarxcors 2 года назад
11:00 Mühlheim an der Ruhr soso 😂✌️
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
Der Zollstock is bestimmt 20 Jahre alt. Den hab ich in D schon immer auf Lager gehabt 😉
@samsonskanal9512
@samsonskanal9512 2 года назад
schweres fault ............ Mülheim mit 2 h geht ja mal garnicht :-)
@samsonskanal9512
@samsonskanal9512 2 года назад
Ich war sehr erfreut meine Heimatstadt in deinem Vedeo zu erblicken :-)
@schraubnix1583
@schraubnix1583 2 года назад
With different metals I would use a grease at screw connections, the nobler material (copper) would attack the inferior metal in the long run. Earlier I used for something like this polfett from Bosch , but I do not know if there is still ? With the tubular cable lugs I also like to use the outside are expanded, it is easier to insert the cable, from about 35qmm cable. Plexiglas I drill with wood drills and cool with spirit, as you do when drilling aluminum. When freehand drilling the drill runs away sometimes, that is unfortunately so. Here is a stand drill helpful ;-) Greets from Germany Uli
@Dutch_off_grid_homesteading
@Dutch_off_grid_homesteading 8 месяцев назад
Heya, I really like those copper bustbar have to see if I can get them here.
@billbabbs3871
@billbabbs3871 2 года назад
FYI they do make a special plexiglass drill bit the flute is different
@johnlorang5313
@johnlorang5313 2 года назад
you can make a drill for drilling plastics. You neet grand off the sharp edge so that it make a scrapping edge. Regular twist drill are just to aggressive.
@melbaylon
@melbaylon 2 года назад
Man, those look good! Also wanna make a 200A one for my setup.
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
Thanks, a lot of work to build these ones but they are 💪
@551moley
@551moley 2 года назад
Always a "Buzz" on this channel!
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
I keep buzzing!
@sleemsconsulting
@sleemsconsulting 2 года назад
Great video! Great workmanship takes time and effort, which you seem to put in your work! Question, what are the red knobs you use to suspend your busbars on the shelves? What type of screws did you use in those red looking knobs to fasten them to the shelves 6mm, 8mm?
@easylooker
@easylooker 2 года назад
I have 2 ft long copper busbars on my negative and positive. Not sure how many threaded holes I have but it is several lol got them spaced for 4/0 lugs and lugs for 4 guage coming from 6 lithium strings.
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
You can never have enough connections, right?
@howardadams4072
@howardadams4072 2 года назад
Andy, glad you tapped your busbars, but please consider bolts and brass washers and don't forget the contact grease. Alternatively you could use countersunk brass screws coming up from underneath to give you a nice thread sticking out the top to put your lug on with brass nut, brass washer and spring washer all covered in contact grease of course.
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
I won't use any contact grease on these connections. I also cannot use any countersunk screws from underneath. That would make it impractical when connecting more cables down the track as it is very hard to reach. Makes no sense to me in doing that.
@carriep7812
@carriep7812 2 года назад
I agree, and I will be designing one this way too. This way, the countersunk screw acts as a permanent post which would almost never require replacement. It will simply act as a stud - and will be flush to the bottom! Great idea, thanks. As for grease, I use no-ox and I never have to worry about corrosion, or dissimilar metals, or humidity, or anything - it's great stuff.
@garys4688
@garys4688 Год назад
What on earth did you use for filming??? The quality is impeccable!!😮😮😮
@GNiessen
@GNiessen 2 года назад
Safety second.
@5UPRAH
@5UPRAH 2 года назад
Where do you buy thick copper bar like that? And what's it coated in? Nickle?
@carriep7812
@carriep7812 2 года назад
I wish I could buy you a small drill press! Great video, thanks for sharing. I would like to know what those small red stand off mounts are. Could you please share what they are and where you got them? Thanks!
@USA-GreedyMenOfNoIntegrity
@USA-GreedyMenOfNoIntegrity 2 года назад
Get yourself some drill bits made for plastic. It is better to use nuts instead of threading soft copper. Your connections will loosen due to thermal cycles and oversized hole. Your bolt pitch diameter is 7.1881 mm. You just lost half of your thread height by drilling a 7.0 mm vs 6.8 mm hole.
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
That's overkill. I say this now as I have to drill in that plastic a lot more in the future. I may regret not have listened to you 😂
@jmaus2k
@jmaus2k 2 года назад
You can get plastic drill bits that are less likely to crack plastic. Or just run your drill fast backwards and melt your holes.
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
Yeah, but I didn't have one at that time and will likely not buying one for just that purpose. I'm saying this now because I'm at the beginning of working with this material.
@ilanozana9652
@ilanozana9652 2 года назад
There are some formula for calculating this it depend on the forces form from the magnetic inducted when a short sircuit happend
@mariousai
@mariousai Год назад
what a great job! just curious, how do you know they can manage 650A?
@ralph9987
@ralph9987 2 года назад
I am surprised that you don't have a drill press!! And by the way, to get a quality thread tap, you really need to do them by hand. Using a drill doesn't give you a great thread, especially when it is so important.
@mikaelreichel3759
@mikaelreichel3759 2 года назад
Exactly! But he has a hydraulic crimping tool!
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
I don't have space for one and never had a need for one until now. Is it worth buying one now? Probably not... I'm sure you guys have one 👍
@ralph9987
@ralph9987 2 года назад
@@OffGridGarageAustralia there is so much you can do with them. They aren't that big. Either a table top one or a free standing pedestal has space in every shed 😊
@joesouthern5335
@joesouthern5335 2 года назад
Instead of Acrylic you could use polycarbonate to stop the plastic cracking when you drill into it.
@magicmanspaz
@magicmanspaz 2 года назад
I love how the main cable to main breaker is 70mm2 while the bus bars are at a guess are 30x10mm so 300mm2. Overkill but why not. Would have cost a pretty penny though. They will handle a lot more than 650amps.
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
The bus bar was 4m long and did cost around $200 altogether. Considering buying cables and all the lugs, crimping and the time, I thought it is worth it and keeps the installation clean.
@brandonsprague7098
@brandonsprague7098 2 года назад
Maybe he wants to use the 70mm2 wire as a shunt haha I would connect the two bars with a piece of equivalent bus bar if the load required it.
@necubredatikazem
@necubredatikazem Год назад
Hallo,tell me pleace,is good to take inox screw to fix busbars?
@rich3317
@rich3317 Год назад
Where do you get the bus bar rubber isolators?
@randycain5764
@randycain5764 2 года назад
Andy, nice bar but I have a suggestion. Rather than threads in the soft copper, I recommend through holes with bolts and nuts, but the bolts point up from the bottom of the bars, thus creating studs. The hex heads will be beneath the bars but accessible with a wrench and will be strong enough to handle the torque you'll need to get solid connections.
@timk404
@timk404 2 года назад
This is a good suggestion, but, leave the threads in the bar. Thread the bolt in from the underside and torque it in place. You get "stud" sticking up but dont need to worry about trying to hold it from underneath.
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
It's not THAT soft. I doubt you will strip the thread out of that bar with a normal ratchet. I also didn't like the nuts underneath as it is dangerous to access them later down the track once the bar is active. There is a good chance for a big short between the two bars.
@randycain5764
@randycain5764 2 года назад
Using a 7mm drill to make a M8 thread weakens it's holding power. An M8 should be torqued to 17Nm in copper. You may want to test in a spare piece. Torquing down a terminal is very important.
@timk404
@timk404 2 года назад
@@OffGridGarageAustralia Personally I dont think you will strip the holes out. My suggestion was to thread the bolt through the bottom of the bar and torque it in so it stays there and you never remove it. Then you have a stud sticking up through the bar. You simply drop the lug and washer(s) over the stud and then apply the nut. Here is the biggest benefit: You can now torque to steel specs instead of being limited by copper. More pressure is more better!
@roaxth
@roaxth 2 года назад
7mm is absolutely fine for your usage
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
I can only imagine how hard it would have been to thread into the copper by drilling 6.8mm. I was glad I had only 7mm 😊
@mayday137s
@mayday137s 2 года назад
What brand of safety sandals do you use when drilling?.. 😄
@clg763
@clg763 Месяц назад
That's a super thick busbar you need for 12v, I'm glad we are moving to 48v these days Is there a big disadvantage to just drilling the holes out and putting a nut on the other side instead of tapping the copper? I hate threading steel bolts into copper and aluminum due to how easy it can be to mess up the threads.
@Elizabeth-fy7kd
@Elizabeth-fy7kd 5 месяцев назад
How do you know how many amps support those bars?
@vickipps6821
@vickipps6821 2 года назад
Andy you can use some model air craft glue on the cracks it should glue them
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
Thank you.
@geozar
@geozar 4 месяца назад
Hey Andy i am looking around to your videos,comments and page and i cound not find the busbar width!?
@rdmevX
@rdmevX 2 года назад
I wonder what copper costs in Australia? Here in Canada I don't think I could afford the bus bars that you show in this video.
@babaluto
@babaluto 2 года назад
Hey hey Sparky, you're getting it going. Good job. Do they have Bellville spring washers down under? With a given ID they have a larger OD over the split ring. I find them to be much better at maintaing pressure at a given torque.
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
Yes, they have them here as well of course. I'm old style 😎
@kaindub
@kaindub 2 года назад
We used pvc sheets instead of acrylic because it doesn't crack. People think building switchboards is easy but there is lots of experience required , lots of tricks.
@pederw
@pederw Год назад
Where do you find your busbars and how do you know what busbars you need?
@johnle231
@johnle231 Год назад
Hi. How did you determine that bar has a 650amp tolerance
@teardowndan5364
@teardowndan5364 2 года назад
If you don't want your drill bits to wander off when starting holes, start with a 1/8th (3mm) or smaller pilot hole that won't be anywhere near as likely to skip out of the punch mark. On the downside, that would mean twice as much drilling to do.
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
I did the first holes with 4mm. I broke a 3mm drill in that copper as they easily get stuck...
@teardowndan5364
@teardowndan5364 2 года назад
@@OffGridGarageAustralia Having some form of drill press helps a lot there. More control over drill bit pressure and staying perfectly square with the surface. Most of the times I've broken drill bits is from wandering off-axis with the hole. Hard to freehand-hold the drill steady while drilling through "grabby" materials.
@miker15677
@miker15677 2 года назад
Get some plexiglass cement for those cracks will seal them like it never happened. It is like water and flows into the Crack. I use it to build aquariums.
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
Thanks for the tip. I'm not too worried about it as it still maintains the isolating effect the plastic is mainly for. Also the bus bar isolator sits right on top. If I create more cracks, I'll get this cement. Thank you.
@joesouthern5335
@joesouthern5335 2 года назад
What about using a "hole saw" type drill bit on the plastic, so it does not crack.
@adamlacey5774
@adamlacey5774 2 года назад
How do you calculate the size of busbar you need?
@dailysounds7788
@dailysounds7788 7 месяцев назад
What are the red things under busbar?
@kyba74
@kyba74 2 года назад
Hey Andy, Where did you get the busbar? I live quite local to you (Gold Coast) and have found that Tradezone is quite good for getting lugs. They have a decent range of cables and stuff too. Might be a bit closer for you than Sunshine coast perhaps.
@bboyda4399
@bboyda4399 2 года назад
Andy, just wondering why you wouldn't place the horizontal bussbar next to the switching device to shorten your cable run and eliminate the cable from the shelf entirely. The end of the bar could have a ninety degree bend to accommodate a straight run cable, this could also provide some strain relief if designed in. I seen electricity do some very odd things over the years.
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
Just another design what you suggest... I would not be able to bend this copper myself without proper machinery. I used to work in a switchboard company and we had massive banks for bending copper. Nothing you would have at home...
@yoking4925
@yoking4925 2 года назад
you can repair that 'plastic' with chloroform. with a thin needle some liquid in the crack and do not tussingon anything, liquid evaporation crack repaired. It's nice to see that nothing goes perfectly and that you are still going to change during the composition.
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
Thanks for the info!
@SiriusSolar
@SiriusSolar 2 года назад
You didn't mention the trick to drilling into copper. With a regular drill bit you blunt it. Basically change the angle so it bites in less. The stops it from catching the material so easily. It should drill like butter and shouldn't give any problems. It's giving problems it's because the drill bit isn't sharpened at the correct angle. Drill bits come factory with the right angle for steel and wood
@barrymayson2492
@barrymayson2492 2 года назад
Yes I hate drilling copper it snags ,catches rips I will never drill buy hand drill press only. !!
@DazzaDirect
@DazzaDirect 2 года назад
also WD40 is a poor lubricant i, i use molly or red grease ;-]
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
Yeah, too late now. I only have these drill bits.
@ricardodiez5871
@ricardodiez5871 2 года назад
Very professional. Congratulations. Once question. what are the red pieces? Thank you.
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
Thank you. They are called bus bar isolators or stand-off. You can get them in all kind of different dimensions. Link is here on my website: off-grid-garage.com/electric-installation/
@danielmeier4529
@danielmeier4529 2 года назад
Hi, thank you for the great videos! Question: Do you think it is an issue to rotate the eve 280Ah batteries 90° so the small side is facing down and the terminals are facing towards you. Small side facing down, fixture left and right Terminals on the front. like this: -->|||||||||
@boomermatic6035
@boomermatic6035 2 года назад
Great vid as always. Are those bars nickle plated? Also as other have mentioned, there are drill bits for plastics, if I recall they are something like 80 degree points instead of the 118 for a normal drill bit. Still looking to that 6 to change to a 7 :)
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
Yes, the busbars are tinned. I should have pushed the plastic down with a wooden block while drilling. It only cracked because the drill bit was so sharp it went through it quickly and lifted it up.
@jimmysquires5093
@jimmysquires5093 2 года назад
Andy, I am a homeshop machinist and milk is the best lube when drilling copper. Also using water spray for drilling or sawing plexiglass helps
@mfgxl
@mfgxl 2 года назад
Is whole milk with higher fat content better than skim milk, or is it not the fat in the milk doing the magic?
@jimmysquires5093
@jimmysquires5093 2 года назад
@@mfgxl Correct, whole milk is best.
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
I've got organic soy milk here...
@jimmysquires5093
@jimmysquires5093 2 года назад
@@OffGridGarageAustralia Not sure if that would have enough fat
@andrewradford3953
@andrewradford3953 2 года назад
Just been given 2 litres of organic raw milk (sold a bath milk) pity I don't have any copper to drill, as it has over an inch of cream on top.
@Christian76S
@Christian76S 2 года назад
You've a large garage mate, get a stationary drill !!
@awbean5254
@awbean5254 Год назад
Nice job on making your own bus bars! Will you paint or put black tape on your negative bus bar insulators for visual recognition of - from +?
@OffGridGarageAustralia
@OffGridGarageAustralia Год назад
Nothing like this. They will be behind glass (you will see this in the next videos)...
@henvan8737
@henvan8737 2 года назад
Perhaps consider putting a nut on the underside of your buss bar bolts to help lower the connection resistance.
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
How would that help? The resistance is between the bus bar and the ring terminal. Only very little current will run through the bolt itself.
@henvan8737
@henvan8737 2 года назад
@@OffGridGarageAustralia Well the head of the bolt is touching the ring terminal, so its a point of contact along with the under side of the ring terminal on the buss bar. Its all about lowering the resistance.
@terryquarton2523
@terryquarton2523 2 года назад
Will super glue or the glue they on car windscreens help repair the cracks in your perspex???
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
I'm not concerned about the cracks at all. The Acrylic will sit flat on the aluminium sheet and where the cracks are the bus bar support will push down on it. There is no mechanical force on the Acrylic, so I just leave it as it is.
@christophec252
@christophec252 2 года назад
Hello Andy I I’m interested to understand how you will manage all this 2 batteries lines. I suppose you will use 2X 18 cells. But the BMS is max 24S. If you use 2 BMS. How they can « discuss » with the inverter??? Or we don’t care about discussion? My idea is to make the same as you in futur. But the inverter I looking for have all mppt integrated and a communication port for the batteries. What’s happen if BMS and inverter does not discuss?
@Trapper_Al
@Trapper_Al Год назад
How do you calculate the required copper bus bar thickness? ...is it dependant on total voltage? Number of connections? Amperage draw?
@pederw
@pederw Год назад
Wonder same...
@gabbermaikel
@gabbermaikel 2 года назад
offcourse the 6.8-7mm is a difference. The amount of force you can put on the thread is a huge difference. But wil you actually torque the cables to the spec of an m8 bolt to a copper bar? Probably not, its not like you are going to hang a swing from the cables or something.
@grahampahl7100
@grahampahl7100 Год назад
Can I suggest countersinking your holes to break the sharp edge before tapping. Your tapped hole will look like it was professionally done then,, A cheap drill press with a depth stop and they will all look the same. I'm a qualified machinist, this is how I was taught to do it. Give it a go on an offcut, you'll never look back.
@Mark-wv6sg
@Mark-wv6sg 2 года назад
Maybe hrc fuses on battery
@chuxxsss
@chuxxsss 2 года назад
Araldite is your friend, for the crack. Morning Andy.
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
Morning. Yeah, I'm not too worried about it. The plastic is for insulation purposes mainly and the bus bar stand off is covering it mostly...
@nhatky-bonmua
@nhatky-bonmua 2 года назад
Thật tuyệt vời.
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
Genau!
@restfulplace3273
@restfulplace3273 3 месяца назад
Omg. I’ve never understood this trend to tap threads with a drill.
@jameshancock
@jameshancock 2 года назад
Where are you getting the bus bar and insulators? (Found the insulators on your site but can’t find the bus bar)
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
I bought it locally from a bus bar company in Brisbane. This is nothing you can really order online and ship internationally. It's super heavy. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-6y_0gHGni60.html
@jameshancock
@jameshancock 2 года назад
@@OffGridGarageAustralia thanks! 30x10…. Checked Amazon…wow. Gotta source locally r kept down scrap copper I guess 🤣
@GaryGreenway
@GaryGreenway 2 года назад
WD40 is unsuitable as a lubricant for tapping. It is too thin and will displace rather than lubricate. Your fabricating life would be much happier if you use a dedicated tapping fluid or wax. I've had great success with the TapMagic brand fluid. I've also used a tapping wax that works well. I don't know the brand, but its what they gave us at work. Blue in color. Looked like a bar of soap. After drilling and tapping thousands of holes, I've learned the right lubricant makes a world of difference. Also, I prefer using a step drill bit making holes in thin plastic. I've never had a crack using this method.
@sjdtmv
@sjdtmv 2 года назад
TREFOLEX CUTTING PASTE
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
You need to tell me that BEFORE I start working. Now, it's too late. I could have used butter though...
@PlanetCypher_
@PlanetCypher_ 2 года назад
Stay charged stay balanced ;)
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
Yes, you too!
@nordexo
@nordexo 2 года назад
use soldering iron and melt a small spot at the end of the cracks so they don't continue growing :)
@nigelcharles511
@nigelcharles511 2 года назад
Strangely the way to stop perspex cracking whist drilling is to use a masonry drill bit. I have done this several times with no risk of cracking.
@nordexo
@nordexo 2 года назад
@@nigelcharles511 i can actually see that working because it makes heat and softens the plastic instead of ripping through it with the sharp edges of a normal metal or wood drill bit :) good point i'm going to put that to memory for later projects.
@sjdtmv
@sjdtmv 2 года назад
Hi Andy, you seem to use the same safety footwear as I use, I live in my sandals...
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
They are good on the roof too 😁 Much better grip than the rubber of my other shoes.
@benzenhart7940
@benzenhart7940 2 года назад
Hi Andy, wenn du die Möglichkeit hast, solltest du besser beim nächsten mal Makrolon/Lexan anstelle von Plexiglas verwenden, das reisst und bricht nicht.
@OffGridGarageAustralia
@OffGridGarageAustralia 2 года назад
Kann ich sicherlich auch hier unten bekommen. Danke fuer den Tip.
@andreashanle9179
@andreashanle9179 2 года назад
Get yourself a drillpress...
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