One for the electricians in the house

[E-bmw]

Not strictly electronics, but I will put it here in the absence of somewhere obviously better for the question.

I have a motorhome & will be wiring in an inverter soon.

As part of this I need to join 2 x 25mm (12 v 250A) cables from my 2 x leisure batteries to 1 x 35mm cable to the inverter input.

This says 100A/250v rating for joining up to 35mm mains meter tails, will it do the job?

https://www.ebay.co.uk/itm/175973779533?var=475404...

[essayer]

Probably. What’s the maximum current the inverter is rated to draw?

[ashenfie]

What you have there is for house hold meter to junction box connection. I think you looking for something like these,

https://www.amazon.co.uk/Joinfworld-Distribution-J...

[sjg]

Get a cable crimping tool, then into a junction box like this: https://www.ebay.co.uk/itm/125771953336

[normalbloke]

Or perhaps consider a 3 way battery switch to add in an additional layer of flexibility and isolation.

[E-bmw]

ashenfie said:

What you have there is for house hold meter to junction box connection. I think you looking for something like these,

https://www.amazon.co.uk/Joinfworld-Distribution-J...

I have seen those, but they are actually quite large & have quite wide openings that metallic objects could easily fall into.

[E-bmw]

essayer said:

Probably. What’s the maximum current the inverter is rated to draw?

At full load it would pull around 210 amps at 12 volts.

[E-bmw]

sjg said:

Get a cable crimping tool, then into a junction box like this: https://www.ebay.co.uk/itm/125771953336

You, sir may well have found the answer, or at least something closer to continue searching on.

I only found the thing in my OP as I didn't really know what I was searching for.

ETA.
Or so I thought until I saw the reference to 42v 120A.

I will keep searching.

Edited by E-bmw on Monday 19th May 16:51

[E-bmw]

OK, if ever anyone looks for a similar answer, here is what I ended up doing as I couldn't find what I was actually looking for.

Bought a 300A isolator & will put the 2 x 25mm supply from each individual battery to the in & the 35mm inverter supply cable on the out, this goes to the inverter via a 300A circuit breaker.

Both batteries will be bridged at the 0v terminal with a 25mm cable & a 35mm cable will then go from one to the 35mm neutral on the inverter.