Battery to Inverter

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Little Bill

Little Bill

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Location
Tennessee NEC:2017
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Semi-Retired Electrician
I have a customer that is asking me to provide, or build, something for him. I couldn't understand what he was trying to explain so I ask him to sketch it out, take a picture, and send it to me. It looks like he wants me to make a multi-tap bar, or bus bar, one for positive battery cables and one for the negative. Looks like he wants to connect multiple batteries to the inverter. I have always just seen the batteries linked together in a box of some kind with no outside connections other that the cable continuing to the inverter. So I'm not sure why he wants it this way.
He also wants it put in a box or cabinet.
Any thoughts on what to use for a bar and type of lugs needed for it? Also, what type enclosure to use?

 
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Hv&Lv said:
Wouldn’t it be as simple as something like this in an enclosure like a Hoffman box?

Is he going to leave the batteries on some type of rack system?
And is it going to be only four?
the bar I posted is a 175 amp, but I would think the AHr rating of the batteries will determine the size of the wires and bus.
Click to expand...
That looks like it would work. If only Grainger would price something reasonable!
 
Biggest problem I see is you "so I ask him to sketch it out" without specifying that he draw the sketch on the back of a check :) ,
 
UPDATE
I contacted the customer for a RFI. Turns out the batteries are 48V and he just wants to parallel them. Either the place he is getting the batteries is out of parallel boxes or he is too cheap to buy one!
 
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