Installing a Battery Disconnect with a Resistor! NO MORE SPARK!

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Installation of the Battery Disconnect should have been one of the first things on my system, but better late than never! Also, I was able to install it using a button and resistor so I never get a spark. Speaker wire was used for the button wiring.
Items used in this Video:
Battery Disconnect Switch 12V Master,12V-48V Waterproof Power Isolator Switch 275Amps High Current for Car Marine Boat RV Vehicles(On/Off):
amzn.to/3Afnx93
(Pack of 2) APIELE 19mm High Round Cap Waterproof Momentary Stainless Steel Metal Push Button Switch High Flush Screw Terminals 250V 5A 1NO SPST:
amzn.to/3y7n4CX
-Tegg 10w Resistors
amzn.to/3OpvKfy
All Tools are on my website!
off-grid-basement.com/Tools.htm
_________________________________________________________________________________________
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Solar Generators I've reviewed!
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Опубликовано:

30 июн 2022

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Комментарии : 138

@mikee2765 2 года назад

I like that you talk slow enough to follow and don't rush through the explanation. Great video, thanks!

@OffGridBasement 2 года назад

You're welcome and thanks for the comment!

@Roll2Videos 2 года назад

Very smart! Hopefully BMS manufacturers will see this video and start implementing pre chargers in there BMS. I think the bigger QUCC BMS has a per charger built-in. Good information for people thanks 👍

@OffGridBasement 2 года назад

Yes. I feel like we can't get the word out enough! Thanks for the comment!

@PeaceChanel 11 дней назад

Thank You for All that you are doing for our Planet Earth.... Peace.. Shalom.. Salam.. Namaste .. 🙏🏻 😊 ✌ ☮ ❤ 🕊

@OffGridBasement 10 дней назад

You're welcome and thank you for the comment!

@billearnshaw1074 Год назад

By the way for those of you with out a resistor, i used my battery tester, which is a huge resistor. hooked up the batteries to one side (positive) and the negative to the jumper that i wanted to connect without major sparks. The tester reads in the green. Then flip the switch as though you were testing a battery to use the large coil resistor inside. Then turn off the switch, and no more voltage reading. And you can watch it climb slowly so disconnect quickly and no spark.... In my case, a 3000W inverter with 6,000 surge capacity. That is one hell of a bank of capacitors to charge all at once, hence sparks like a short...

@OffGridBasement Год назад

That's really good to know. I'll need to try that sometime. Thanks for the info!

@billearnshaw1074 Год назад

@@OffGridBasement Thanks, looked around the garage and no resistors, then noticed the battery tester...... And thank you, as there was so much spark I suspected a short, the battery tester gives one both answers safely. If the voltage remains it is more than capacitors.

@JRathor Год назад

Thank you very much. Excellent demostration. Like you said work in progress . I love that thought.

@OffGridBasement Год назад

Thank you for the kind words!

@johnbutler5208 Год назад

Yes thank you. Have a great thanks giving stay safe stay warm. John

@OffGridBasement Год назад

To you as well! Thank you.

@wherami Год назад

excellent job there. love all the disconnects

@OffGridBasement Год назад

Thanks. I need to fuse the button.

@MyGoogleYoutube Год назад

Fantastic thank you. I need to add this to my system. So easy to do.

@OffGridBasement Год назад

Yes. It wasn't very difficult. Worth it if you shut off your system regularly. Thanks for the comment!

@jeffgendron1959 Год назад

The resistor method works well! I like the momentary switch setup. I use a 12v test light. You know those things that look like screw drivers but have a alligator clamp and light inside? If you use that the light will light up bright as the capacitors charge and when full the light goes out. I know the capacitors are fully charged that way. My Go Power inverter actually takes about 10 seconds to fully charge the caps. It has to be an incandescent bulb to work which is what most test lights are anyway, the LED test lights cant take the same amount of amps so they may blow. If I ever do a power wall like yours I might steal your momentary switch idea and hook up a 12v bulb to mine!

@OffGridBasement Год назад

Thanks for the info! Maybe I'll get one of the tester lights and try it out. Thanks!

@jeffgendron1959 Год назад

@@OffGridBasement Good idea! Give it a shot, you can get those 12v test lights pretty cheap from many places. It's neat to get the visual confirmation when charging an inverter. Plus then you have a 12v test light and if you need to troubleshoot or test any basic connections in a vehicle you can with some basic know how!

@ImASurvivorNThriver 5 месяцев назад

Good stuff ‼️ Thanks for sharing.

@OffGridBasement 5 месяцев назад

You're welcome. Thanks for the comment!

@Etherionix Год назад

Just a note; I've had much lower device temperatures by aligning heat sink fins vertically.... food for thought. Thanks for the video!

@OffGridBasement Год назад

That's a good idea. Better heat dissipation. Thanks for the info!

@johnlazdins2004 Год назад

Idiot

@mannyfragoza9652 2 года назад

excellent idea i need to do exactlly what youve done here.

@OffGridBasement 2 года назад

I'm glad I could give you some ideas. Thanks for the comment!

@offgridlivingstlucia8865 2 года назад

Nice work 👏

@OffGridBasement 2 года назад

Thanks!

@LA-Creative Год назад

Hi, great video! Do you know if there are physically smaller switches the do the same thing yours does but for 10A solar controller systems? I have a tiny diy (5 pounds, 10w / .5A panel, 10A Renogy controller 5Ah battery) backpacking system that I’d like to hook up to a larger capacity battery that I would store at home or in my SUV (for leisure / device charging use) more easily. Thinking I would need two switches (one inside the diy generator case to turn on /off to control the little battery and one next to the bigger battery at home). Thanks!

@OffGridBasement Год назад

Thanks for the info. I like the idea of a back pack battery setup. Good thinking and thanks for the comment.

@teddypreston5525 Год назад

I can see one issue... If the whole system i running and you happen to just turn the system off with that switch you will damage your Victron Energy controllers. You should have an electrical box to disconnect your solar sightly before it disconnect the power supply. IMHO Remember that DC with higher voltage will give you bigger arcs that should be properly attenuated.

@OffGridBasement Год назад

You are correct. I would need to make sure and disconnect the 3 circuit breakers from the solar panels to the charger controllers before turning off the main system switch. Thanks for the comment.

@practicaltactical1336 5 месяцев назад

Great video by the way!

@OffGridBasement 5 месяцев назад

Glad you enjoyed it! Thanks for the comment.

@johnbutler5208 Год назад

Great looking system nice job. I need some advice though. I have a 1000 watt pure sine wave inverter that came with 40 Amp fuses. What Amp Fuses or circuit breaker should I buy to protect the internal fuses. I was thinking a 30 Amp circuit breaker. But I need your advice. John. Thank you.

@OffGridBasement Год назад

I'm guessing the inverter has multiple 40a fuses inside. Probably one for each wire inside. They are to make sure the internal wiring does burn up. If you use a 30a breaker you will get a max of about 400w from the AC side before the breaker pops. Your best bet is to size the breaker to the wire size going to the inverter. Hope that helps!

@marekc8654 Год назад

Hi. Nice work. I would add fuse to protect that precharge circuit. In case if that button get stuck in. Not easy to find this buttons rated for 48VDC. I did my precharge using terminal block and sticking bridge wire for few second. More fail safe.

@OffGridBasement Год назад

That's a good idea. Not constantly connected. Much more safe. Thanks for the comment.

@Drdiesel. Год назад

Hi, installed victron setup but when I installed cut-out switch , positive or negative side voltage reading goes haywire 4- 8 volts dc, everything works perfect without switch.would a resister help this, where did you connect the wires after the resister?

@OffGridBasement Год назад

That is strange about the switch. It shouldn't cause anything like that. It's a simple device. A resistor wouldn't help with that situation. Is the switch dirty or have something in it that could cause a disruption in current? The resistor wiring goes: switch post, button, resistor, other switch post.

@stevenseigneurie5073 7 месяцев назад

I live in the UP of Michigan where we get a lot of cold and snow. I have a very small trappers cabin and maybe spend 8-10 nights there so I just use a a Lifepo4 battery and 1000 inverter. I take the battery out every time I leave (because of the cold) go home and charge it up if needed , so would this be a viable option to install and would it cut down my sparking?

@OffGridBasement 7 месяцев назад

It would, but honestly I would just purchase some resistors and have them on hand when you go to connect the battery. Here is a link to the ones I use. -Tegg 10w Resistors amzn.to/3OpvKfy Hope that helps! Thanks for the comment.

@SolarResurrection 2 года назад

My admit , I might try a hybrid invertor to make the wire job as simple as possible. ? What guage wire should ,I use for a 24v volt battery, Also if I deside to go 48v what gauge cable for thats Thanks.

@OffGridBasement 2 года назад

It depends on the size of inverter. 3000w @ 24v should be 2awg minimum. 5k @ 48v can use the same gauge cable.

@SolarResurrection 2 года назад

@@OffGridBasement Thanks, So many things or pitfalls. Hybrid invertors make some thing easier. But cant see limiters. I have to research. External Limiters next project. Would of hope that new hybrid invertrrs just connect to my smart meter, I have like a kitchen unit displaying usage. Not sure how it connects does not require wifi. Maybe thru mains wires.

@SolarResurrection 2 года назад

Shed is 30 meters from Electric meter..So even with a Solis Grid tie not sure.. If it will be accurate..ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-49nnnspxgrs.html Also solis does not give you the limiter as standard have to buy separatly...The smart meters use IoT internet of things communication provider so not much chance of manufactures conecting...Might be few years away but they can get CURRENT LOAD over a closed network to display in your kitchen monitor.

@practicaltactical1336 5 месяцев назад

Can a circuit breaker work the same as a cut off switch? Pushing the button on (disconnecting) it cuts off the battery! Then a button rig can be used like you show before resetting the circuit breaker? It has the same 2 contacts on the positive side! Thanks!

@OffGridBasement 5 месяцев назад

Yes, absolutely. A circuit breaker can be used as a shut off switch, but it's not designed for that. Andy from the Off Grid Garage has this setup.

@howardlee53 2 года назад

Interesting on your second press of the pre-charger resistor, the overhead lights blinked a few times.

@OffGridBasement 2 года назад

Yes. They are 12v led lights connected to my fuse block. I left them on to see what would happen! Thanks for the comment!

@WiSeNhEiMeR-1369 2 года назад

HOWdy O-G-B, Nice "momentary -on" Button to pre-charge your CAPACITORS Thanks COOP ...

@OffGridBasement 2 года назад

Thanks!

@WCO3 2 года назад

Great video!! one question is there any specific reason why you don't put the kill switch on the negative side?

@OffGridBasement 2 года назад

Thanks! Yes. I wanted to make sure I had room near the inverter. At some point I would love to upgrade to a victron multiplus. Those take up a lot of room!

@markjackson6829 Год назад

Nice setup! the only thing is while it is small and so are the capacitors for the grid tied inverter , it didn't get pre-charged through the pre-charge button with the circuit breaker to it turned off. Maybe add another for that, but many small inverters won't potentially blow without one? Thanks for the video, I was going to maybe use a 3 way switch for that, I like your button better though!

@OffGridBasement Год назад

That is true. I'll need to make sure and flip that circuit on before precharging. The button does work well! Thanks for the comment!

@ivar-the-terrible 8 месяцев назад

@@OffGridBasementif you flipped that switch then what's the point of the button which is wired to it? It makes no sense. It needs to be wired directly to the battery and bus bar.

@sonnic2071 Год назад

Hey Jim, im doing a 12v system with a 100ah battery & 2500 inverter. How big is the fuse i need to use & also do i need a switch to disconnect the battery? Tks

@OffGridBasement Год назад

It's wise to have a cut off switch but you definitely don't need one. The fuse is meant to protect the wiring. What gauge of wire are you using? If it is 2 awg then use a 150 amp fuse.

@sonnic2071 Год назад

@@OffGridBasement The inverter came with 3awg cables. You recommend to go with 2awg or leave it for now. Thanks for the response 👍

@OffGridBasement Год назад

@@sonnic2071 3 awg will be fine since your battery can only output up to 1300 watts. I would then use a 125amp fuse. Hope that helps!

@cabin56 Год назад

Hi. Great work. I have a 24v solar. I have a 3000watt 24v solar inverter wot size Resistor do you think i need plus the Push Button Switch

@OffGridBasement Год назад

Your system is the same size as mine so the same equipment would work just fine. Check out the description of the video for links to the products. Thanks!

@cabin56 Год назад

@@OffGridBasement Hi. I was trying to work out how you connected the wire to the resistor did you solder the wire on? All the best.

@OffGridBasement Год назад

@@cabin56 I believe I used a butt splice, but soldering would be a much better option.

@cabin56 Год назад

Hi thank you.@@OffGridBasement

@Captain-Paul 9 месяцев назад

How do you work out the size of resistor you need for a given Inverter Size and Battery Capacity????

@OffGridBasement 9 месяцев назад

I just use the same resistor for all inverter / battery connections. Thanks for the comment.

@michaelkase4633 8 месяцев назад

The resistor required is determined largely by the battery voltage. The one used here (looking at Amazon link in description) is 1000 Ohms. On a 24v battery that will limit the initial current surge from potentially hundreds of amps to an exceedingly cautious 24 milliamps! (Current = Voltage / Resistance) in this case 24/1000 ). It would take many seconds to charge the filter capacitors in the inverters, but better than making them pop off with an unrestricted current surge. There is also a question of power dissipation as heat produced in the resistor. The one used is 5 watts and more than enough. Power = (Voltage x Voltage)/ Resistance (24x24)/1000=0.58Watts For this 24v system a 100 Ohm resistor would allow 240mA to flow (safe) and dissipate 5.8w for a few seconds so also safe and faster. If you’re using a 48v battery, the 1000 ohm resistor would still work, but a 500 ohm resistor would be prefered and use 4.6W while allowing 96mA Hope this helps!

@devesh09 Год назад

Hey it's good i am wandering can u tell me how to kill my capacitor bank when it's charging and also after it charged and throw all charges to resistor

@OffGridBasement Год назад

Those are items I don't regularly work with so I wouldn't be the person to give out advice. Sorry. I hope you find the answers you're looking for.

@devesh09 Год назад

@@OffGridBasement okay thanks for ur reply

@jamesalles139 8 месяцев назад

try using a 12v light bulb in place of the resistor, and get some feedback on the capacitor charge state!

@OffGridBasement 8 месяцев назад

That's a great idea! Thanks for the comment.

@horrormaster574 4 месяца назад

Could you can a more detailed instruction on where the wires terminate on the push button to the switch.

@OffGridBasement 3 месяца назад

The button is just wired in line with the negative wiring along with the resistor.

@olakjellgren2387 Год назад

What was the value of the resistor? Resistance and power?

@OffGridBasement Год назад

They are a 10w 20ohm resistor.

@Paul_______ Год назад

I'm having a absolute horrible time finding dc breakers like you have here. Would you be able to link them?

@OffGridBasement Год назад

DC Miniature Circuit Breaker, 2 Pole 1000V 32 Amp Isolator for Solar PV System, Thermal Magnetic Trip, DIN Rail Mount, Chtaixi DC Disconnect Switch amzn.to/3Gd6dlR

@Paul_______ Год назад

@@OffGridBasement epic, thanks a ton. I just got my first system online yesterday as a test run and was waiting on finding correct breakers before I put it to use.

@projet2907 Год назад

8:44 Why are the lights flafhing when you push the button?

@OffGridBasement Год назад

Good observation! It is because they are connected to the 12v fuse block and I forgot to turn them off. They are DC lights. They are not powered by the inverter.

@anthonyt2011 3 месяца назад

Hi i was wondering what ohm resistor you use? Thanks great video

@OffGridBasement 3 месяца назад

There is a link in the description. Here is the link: -Tegg 10w Resistors amzn.to/3OpvKfy Hope this helps!

@anthonyt2011 3 месяца назад

@@OffGridBasement Thanks man

@Dave-xr9bc 7 месяцев назад

nice video thx.u dont need a t class fuse for this system?

@OffGridBasement 7 месяцев назад

I don't believe so. I believe T-class fuses are really only needed for when you are using very high amperage loads. My system isn't designed for that. I usually max out at around 1500w from the inverter. Now if I were powering my whole house with an 8k inverter, then yes. Thanks for the comment.

@Dave-xr9bc 7 месяцев назад

@@OffGridBasement thx for the feedback.

@bwilson948 6 месяцев назад

Parallel a dc lamp with resistor the same voltage as you battery setup 12/24/48 volt when the lamp goes out the voltage at the inverter and battery are the same, no guessing if they are balanced.

@OffGridBasement 6 месяцев назад

That's a good idea. Thanks for the info and the comment.

@cmkennyly 4 месяца назад

is it suppose to turn off AC/Load 1st and PV 2nd

@OffGridBasement 4 месяца назад

You really should turn PV off first when working on your system. You really don't want to have power coming into your charge controllers with them being about to put that power somewhere.

@cmkennyly 4 месяца назад

How to safely shutdown a grid tie solar system with batteries backup? My system is wiring from solar to charge Controller to batteries to inverter to grid.please advise thanks

@igornedashkivskyi1472 Год назад

It looks so nice, but what about huge continue spark (arc) when switch off this breaker inverter under the load?.. Thanks

@OffGridBasement Год назад

Are you saying I should install a fuse on the line? That is a pretty good idea....

@igornedashkivskyi1472 Год назад

@@OffGridBasement not really sure that will help you against direct current arc, I thought about some handle load circuit breaker with arc-extiguisher chamber, here a video example what I am talking about: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-NBniCDzpsWw.html By the way, I have one more question: do you know what voltage or power drop for that load breaker from your video, because I didn't find this information for such devices? Thanks.

@OffGridBasement Год назад

@@igornedashkivskyi1472 I know it can handle 600v, but I don't know about any voltage drop from the shut off switch. Thanks for the link. I'll need to watch it on a computer so I can read subtitles.

@mrtechie6810 7 месяцев назад

Always shut off the loads before the main breaker! Unless it is an emergency.

@ericeinsmann5559 6 месяцев назад

Nice video! What caught my attention was that some of your breakers are mounted upside down. Maybe you did that on purpose for some reason? I would think having them all the same way would be safer.. less chance of thinking something is off, when it isn't.. just my 2 cents..

@OffGridBasement 6 месяцев назад

I feel like the item with the most potential energy should be wired through the top. The battery has more potential energy than the charge controller. I definitely could be wrong in my thinking. Thanks for the comment.

@2hotscottpro 5 месяцев назад

Breakers in up position is on.😊

@cabin56 Год назад

Hi. What are your busbar brand

@OffGridBasement Год назад

The brand is "JQuad". Here is a Amazon Link: amzn.to/3K0i4Gs You can also look at my website for everything in my setup. Go to off-grid-basement and find the "Diagram" section. There you find a PDF with clickable images for everything. I hope this helps!

@cabin56 Год назад

@@OffGridBasement very informative thank you

@NateCCIE 2 года назад

But you didn’t even change out the negative 4 awg wire.

@OffGridBasement 2 года назад

You are correct and I still haven't! It's more of a cosmetic issue. It actually never gets hot or restricts my system in anyway. I'm sure I will change it out at some point. Thanks for the comment 👍

@muntee33 Месяц назад

But shouldn't your resistor be inline, and not parallel? Otherwise you have essentially bypassed the isolator rhe connectors DJI used to use on thier flagship platforms S900 and S1000 come to mind. The male plugs would insert into the female sockets but the positive plug was a 2 piece plug with the tip isolated from the rest of the plug by a resistor. So as you connectef the plug and socket the tip would initially contact the socket and current would run through the resistor then as you further inserted the plug the main part of the plug would make comtact and power could then bypasd thr resistor.

@OffGridBasement Месяц назад

It is in parallel, but you only press the button before you flip the main power on. It's wired to bypass the main switch with the button switch and resistor. Hope this helps.

@cantseeusprius9069 Год назад

crazy the contrast between victron and "reliable"

@OffGridBasement Год назад

Victron is definitely top of the market.

@cotandiet6096 Год назад

You should buy the one with copper bolts.

@OffGridBasement Год назад

I didn't even think about it. Good idea. Thanks for the comment.

@projet2907 Год назад

9:23 What is a Rasberry pie ? 9:55, turn back on the solar pannels braker ?, before all that replace the 4G cable. :-0). Thank You for this video.

@OffGridBasement Год назад

You're right! I forgot to record turning on the breakers to the panels! You would want to do that last. A Rasp Pi is a small computer that you can program to monitor your Victron system. It would do the same as a Victron Cerbo.

@jacquesdutron9954 Год назад

Sir, I thank you so much for all your efforts. However, please go back to the drawing board. Then get some cable ways and put some serious order in your wonderful equipments to protect your investment.

@OffGridBasement Год назад

Thanks for the comment. My next big project is to completely redo my 24v system. A metal cabinet and conduit is going to be a high priority.

@jacquesdutron9954 Год назад

@@OffGridBasement thank you so much for your understanding!

@Rj-nh1df Год назад

You are going to start seeing this guy subscriber count increase soon. Just wait and watch unfold.

@OffGridBasement Год назад

Many thanks!

@frankmaze1976 4 месяца назад

Did all those years in the prison workshop teach you nothing? You've got to test everything. That switch can only handle 50amps continuously without generating massive amounts of heat. If you're gonna go cheap run 2 of em side by side. 🤠

@OffGridBasement 4 месяца назад

:-) Thanks for the information and the comment. Since the switch is in line with a 10 ohm resistor there will only be 1-2 amps @ 12v going through the wire.

@GASNICABRUNATNA 2 года назад

Should've worn safety glasses to set a good example.

@OffGridBasement 2 года назад

You are correct! I usually do when I connect the inverter manually using a resistor, but this time I didn't. I guess I just felt confident... which is a bad idea. It's when you let your guard down you get into trouble. Thanks for the comment!

@laryangel4082 Год назад

@OffGridBasement Год назад

:-)

@rontech34 11 месяцев назад

You should not have to do all that with every inverter come on now

@OffGridBasement 11 месяцев назад

It is overkill. I've used it once since I installed it over a year ago. I just wanted to show it can be done. Thanks for the comment.

@jws3925 3 месяца назад

You look so much better in this video with your hair cut in, should I say, a more "mature" manner.

@OffGridBasement 3 месяца назад

hahah!! Thanks. I'll probably be cutting my hair this summer. My son wanted us to both grow our hair out. He cut his hair and I'll be doing it soon enough. Thanks for the comment!

@cdonuts7335 Год назад

Yeah that's all wrong! I think your got yourself all confused! You don't wire your precharge switch across the isolator! When the isolator is off pressing the switch won't precharge anything. It should be connected from the battery to the press down switch through the resistor to the inverter. The flashing lights was probably inrush current which will damage BMS and invertors! All these so-called experts are dangerous! I've been involved in off-grid power since the late 1990s. It's amazing how far tech has come making it easier to get free power and has made it some what safer! BUT the basic principles are the same and if not followed will result in the first free energy!! 🔥🔥FIRE🔥🔥

@OffGridBasement Год назад

The flashing lights were from my DC lights connected to the fuse block that I forgot to shut off. Also, I don't believe I ever considered myself an expert. Thanks for the comment and info.