wire battery bank neg. post to ground bus?

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wire battery bank neg. post to ground bus?

Postby Megunticook on Mon Dec 11, 2017 6:11 am

In my FP-Radian wiring diagram (http://www.outbackpower.com/downloads/documents/Make_the_Power/flexpower_radian/fpradian_qsg.pdf) it shows a green ground wire running from the battery bank to the EGC bus in the Load Center. Is this supposed to connect to the negative battery post, or does it just indicate that the battery enclosure itself should be grounded if it's metal?
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Re: wire battery bank neg. post to ground bus?

Postby Mike Curran on Mon Dec 11, 2017 8:42 am

You got it, it's for a metal battery enclosure (does such a thing exist :???: ?). Definitely not to the negative battery terminal.
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Re: wire battery bank neg. post to ground bus?

Postby Megunticook on Mon Dec 11, 2017 8:51 am

Thanks, just wanted to be sure. I've spent a bit of time wiring vehicles, where you always make sure you have a 10 gauge wire from the negative battery post to the chassis in addition to the negative battery cable to the engine block. But a vehicle is obviously a different animal than a residential solar system, since the chassis itself serves the same role as the neutral wire in household systems, completing the circuits to the various loads.

Appreciate the help.

And yes, my battery box is wood, can't image why you would use metal instead.
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Re: wire battery bank neg. post to ground bus?

Postby pss on Sat Jan 06, 2018 9:22 am

Regarding the metal battery enclosure, in my location in Southern California, state code regulations require batteries to be in metal boxes or on metal shelves, not wooden, with adequate ventilation if flooded lead acid. I simply used a strong metal shelving unit. Wood is not allowed due to risk of catching on fire. So, for those contemplating building a battery box out of wood, I'd say use aluminum fraework and maybe polyethelyene or other plastic walls.
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Re: wire battery bank neg. post to ground bus?

Postby raysun on Sat Jan 06, 2018 9:45 am

I use an Outback IBE3 for my battery enclosure. All metal construction.
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