There are no 4/0 Lugs?!

[chemist308]

I'm in the middle of a battery bank install and have the required 4/0 cable. I open the box for my lugs from Amazon, and surprise--the assorted lug kit witch advertised 4/0 lugs only has up to 4 AWG. So far I've learned that Lowes, Home Depot, Tractor Supply, Ace Hardware, Advance Auto, O'Reilly Auto parts, and even the Northern Tool--wife drove an hour and a half for that one--all do not carry 4/0 Gauge lugs. And Amazon offers 4/0 AWG--which is not 4/0 Gauge, it's 4 AWG!

People here have done 400 to 600AH battery banks. which do require 4/0 wire. Question is, where did you source your wire lugs?

[SolarPoweredRV]

I'm in the middle of a battery bank install and have the required 4/0 cable. I open the box for my lugs from Amazon, and surprise--the assorted lug kit witch advertised 4/0 lugs only has up to 4 AWG. So far I've learned that Lowes, Home Depot, Tractor Supply, Ace Hardware, Advance Auto, O'Reilly Auto parts, and even the Northern Tool--wife drove an hour and a half for that one--all do not carry 4/0 Gauge lugs. And Amazon offers 4/0 AWG--which is not 4/0 Gauge, it's 4 AWG!

People here have done 400 to 600AH battery banks. which do require 4/0 wire. Question is, where did you source your wire lugs?

Because I wired up a 24 volt system, I did not have to source 4/0 hardware (I used 1/0 wire and hardware). However, Amazon has a 10 pack of 4/0 gauge (AWG) copper cable lugs available (link below).

I sourced most of my hardware from Amazon and found the quality to be top notch.

Link: https://www.amazon.com/Pico-Battery-...s%2C190&sr=8-3

PS: AWG stands for American Wire Gauge and 4/0 gauge is definitely larger than 4 gauge (usually denoted as 4 AWG).

PPS: another source might be an automotive (or truck) parts store.

[chemist308]

I hear what you're saying, but what was advertised as 4/0 AWG clearly does not fit my 4/0 Gauge wire--opening looks to be about 1/2 the diameter my stripped cable, so I'm guessing they really sent 4 AWG lugs.

[BobLandry]

Any of the online marine supply stores should have what you need.

[huntindog]

I'm in the middle of a battery bank install and have the required 4/0 cable. I open the box for my lugs from Amazon, and surprise--the assorted lug kit witch advertised 4/0 lugs only has up to 4 AWG. So far I've learned that Lowes, Home Depot, Tractor Supply, Ace Hardware, Advance Auto, O'Reilly Auto parts, and even the Northern Tool--wife drove an hour and a half for that one--all do not carry 4/0 Gauge lugs. And Amazon offers 4/0 AWG--which is not 4/0 Gauge, it's 4 AWG!

People here have done 400 to 600AH battery banks. which do require 4/0 wire. Question is, where did you source your wire lugs?

The size of the battery bank does NOT determine the gauge of the wire needed.
I presently have four 100 amp lithium batteries, and will be going to eight. I do not have 4/0 wire, and will not have it with the upgrade either.
The maximum amps you can draw is the limiting factor for wire sizing.

[jmbopp]

Two possibilities for crimping 4/0 cable - a welding supply house, or a heavy duty truck shop.

[Fsalmy]

https://www.batterycablesusa.com/copper-lugs-terminals

[JKellerJr]

I just ordered and received a couple of packets of 4/0 lugs from amazon (along with various other sizes)

https://www.amazon.com/gp/product/B0...0?ie=UTF8&th=1

There are other cheaper ways to crimp them on but I bought this and it works great. Made my life much easier.

https://www.amazon.com/dp/B00HJXG3KM...roduct_details

[SolarPoweredRV]

I just ordered and received a couple of packets of 4/0 lugs from amazon (along with various other sizes)

https://www.amazon.com/gp/product/B0...0?ie=UTF8&th=1

There are other cheaper ways to crimp them on but I bought this and it works great. Made my life much easier.

https://www.amazon.com/dp/B00HJXG3KM...roduct_details

That style of crimper is the best, however, Amazon does have much cheaper (and Good) versions available. A little searching will save you big bucks.

Here is the one I purchased for ~ $40 (prices have risen):

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

[rootusrootus]

I can't even imagine how to push enough power to need 4/0 wire. I guess a big converter, charger, or several, plus a pretty big bank of PV?