Ground fault [RE-wrenches]

[matthew tritt]

WM

Wouldn't the protection of + and - circuits by breakers  and/or fuses
prevent this sort of problem? Why shouldn't both be protected in a
battery-based system?
Matt                                                      Original
Message -----
From: "William Miller" <wrmiller at slonet.org>
To: <RE-wrenches at topica.com>
Sent: Thursday, November 14, 2002 11:48 AM
Subject: RE: Ground fault [RE-wrenches]


> Kurt:
>
> There was a 60 amp DC rated circuit breaker on both sides of the charge
> controller.  Curiously, when I arrived on site, all circuit breakers had
> been opened by the client, AC, DC, etc.  Even then, when I touched the
> burned circuit board with a screw driver, it arced and sparked enough to
> scare us.  Note in theory B no current flows through the positive leg of
> the CC.  Breakers do no good there.
>
> WM
>
>
> At 09:54 AM 11/14/02 -0600, you wrote:
> >Greetings William,
> >
> >There must have been a lot of current going though that CC.  I didn't
> >know the RV products would allow reverse current flow.  Wasn't there a
> >fuse or DC rated breaker between the CC and the battery?  I usually
> >place one both between the battery and the CC and between the CC and the
> >array.  It seems to me such over current protection would have prevented
> >this almost as well as a GFI.
> >
> >Kurt Nelson
> >SOLutions
> >
>
> __________________________________________________________________
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> Miller Power and Communications
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