Improper Battery Gauge Wire

[NDanecker]

Just picked up my 349m-r that has factory solar and gen set. I'm replacing the lead acid battery with 2 LiPo batteries (300Ah each) and while doing so noticed that the pos/neg battery cables are only #4 wire. The inventor is the factory 2000W CSW2012 which appears to have either #4 /0 or #2/0 cables (to fuse, disconnect switch and block). However the battery gauge is much smaller.

Shouldn't the battery cables also be #4 /0 or #2/0 (I need to confirm which it is)?

 

[jkwilson]

What size breaker?

I’d think 1/0 would be fine for the inverter at full power.

 

[NDanecker]

What size breaker?

Invertor supplies power via a single 20a outlet which powers a dedicated breaker panel box with 3 15a breakers (frig, bunch of GFCI outlets, vacuum). Is this what you are asking?

Doesn't really matter as the most the inventor can put out is 2000w continuous (4000w peak) which at >90% efficiency means a max of about 185a DC input thus the battery wire gauge concern.

 

[jkwilson]

Invertor supplies power via a single 20a outlet which powers a dedicated breaker panel box with 3 15a breakers (frig, bunch of GFCI outlets, vacuum). Is this what you are asking?

Doesn't really matter as the most the inventor can put out is 2000w continuous (4000w peak) which at >90% efficiency means a max of about 185a DC input thus the battery wire gauge concern.

The inverter output is limited by the weakest link, meaning the lowest rated current limiting device. The breaker in the battery lead is probably the limiting factor since it should be sized so that the wire is protected. If the breaker is properly sized for the wire, you don’t have a safety issue, but you can’t use all of the capacity of your inverter without upgrading battery wire size and and breaker size.

 

[NDanecker]

The inverter output is limited by the weakest link, meaning the lowest rated current limiting device. The breaker in the battery lead is probably the limiting factor since it should be sized so that the wire is protected. If the breaker is properly sized for the wire, you don’t have a safety issue, but you can’t use all of the capacity of your inverter without upgrading battery wire size and and breaker size.

Understood and agree. However, I can't imagine why they would size it such that it would trip the breaker before meeting the demand of the inventor, but I've seen crazier stuff from manufacturers. Its also false advertising as they market it as a 2000W system. Will look for breaker and report back.