minimum clearances [RE-wrenches]

Allan Sindelar allan at positiveenergysolar.com
Mon Feb 12 09:14:52 PST 2007


Marco,
We faced this same issue recently on a 25kW utility job. There is no minimum
height specified for service equipment in the NEC that applies to your
question. Something in trailer parks, I think.

Allan at PosE

----- Original Message ----- 
From: "Marco Mangelsdorf" <marco at pvthawaii.com>
>
> I've got an install using several SMA 6000s.  I know what the clearances
for
> the working spaces for electrical equipment are: 36" in front, 30" wide,
and
> 6'6" high. The SB6000 inverters need 8" clearance around them. Does anyone
> know what the minimum clearances are as far as mounting an inverter off
the
> floor as far as the NEC is concerned? Is it 3", 12", 36" or nothing at
all?
> How about an inverter AC output load center? Same thing as any
distribution
> panel I would think. I can't find anything to say what the min. or max.
> would be off the floor though. I know a manually operated disco handle can
> not be higher than 6'7" without some special attachments. I thought there
> was a min of 36" for the handle in the off position off the floor. I just
> can't seem to find it in the code. Any ideas?
>


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