I think the system would be technically required to have an equipment
grounding conductor to connect to lighting fixtures made of
conductive material. I believe this is true regardless of voltage.
If these do not exist, and no metal boxes are in the system and it is
only 12 V, then it might be compliant to exclude the ground. If it
is only a 12 volt system, I don't believe there is much danger,
unless the person has a pacemaker and goes barefoot on the ice.
410.46 Methods of Grounding.
Luminaires and equipment shall be mechanically connected to an
equipment grounding conductor as specified in 250.118 and sized in
accordance with 250.122.
At 11:50 AM 8/9/2011, you wrote:
Why ground it at all?
For a low voltage 12v nominal system you can per code install a +
and - OC protection and no ground.
But if it was me, I wouldn't ground it at all,
jay
peltz power
On Aug 8, 2011, at 10:34 PM, Aladdin Solar wrote:
Sounds like a silly question but is there any way to ground a small
battery based PV system serving a temporary fishing shack on the
middle of a frozen lake? Around here they call these 8' x 8' (or
larger) shacks "ice houses". One or more holes are augered through
the ice for fishing lines. Some of the shacks get remarkably fancy,
almost luxurious (in a guy kind of way). There is usually plenty of
beer and snacks. Sometimes fish, too. The shacks get set in place
as soon as the ice is solid (4-6" thick) and they may stay there
for several months. It's a home away from home for a lot of upper
midwest folks in the winter. Some like the idea of a small solar
powered battery system for light, CD player, TV, etc. There's no
earth around for hundreds of yards, even miles.
Charlie Pickard
Aladdin Solar
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