DC GFCI [RE-wrenches]

[Travis Creswell, Ozark Solar]

Oops, I should have drawn the diagram myself.  Maybe no one read my message.
 No one caught my flawed example so I'll tell on myself. I was thinking
about a 3 way switch which typically has a hot wire (commonly called the
traveler) everywhere in the circuit.

I do agree that it's important to stop the battery current from back feeding
the array wires should the C40 not electronically "trip".  I do have a hard
time believing the a C40 installed in a 48 volt system (voltages up to 60
commonly) could stop a 10,000 amp fault the batteries are capable of
delivering. 

Travis
----------
>From: "Travis Creswell, Ozark Solar" <ozsolar at ipa.net>
>To: RE-wrenches at topica.com, RE-wrenches at topica.com
>Subject: Re: DC GFCI [RE-wrenches]
>Date: Fri, Jan 11, 2002, 5:48 PM
>

>Exactly Drake, that's what I'm talking about!
>  
>Others please draw the line diagram out, but really it's so basic you don't
>need to. You 'd better not anyway.  Lets make it really simple since I'm not
>on any code committees.  Compare it to a light switch where you are pulling
>a switch leg from the fixture.  If you turn the switch off does that make it
>safe to cut through the wire coming from the light fixture?
>
>Travis
>----------
>>From: Drake Chamberlin - Electrical Energy <solar at eagle-access.net>
>>To: RE-wrenches at topica.com
>>Subject: RE: DC GFCI [RE-wrenches]
>>Date: Fri, Jan 11, 2002, 5:30 PM
>>
>
>>The ground fault detector is near the batteries not the array.  In the 
>>event of a nail through a cable, shorting positive to ground, wouldn't the 
>>circuit from the array continue to short even if the device were tripped?
>>
>>Drake
>
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