DC GFCI [RE-wrenches]

[Christopher Freitas - OutBack Power]

> Battery current will blow fuses.

This may not always be the case with DC ground faults - the current can 
be limited in the ground fault due to it flowing in a circuit path not 
intended to carry current - such as an antenna mast falling on the PV 
array or metal roofing etc.  

I have played with lots of fuses and breakers to simulate ground faults 
etc and it is surprising how much arcing you can make without tripping a 
breaker or blowing a fuse IF the "fault" is made with a few strands of 
wire or some type of resistive component (such as a tool). 

I'll post a few pitcures of the results on our website soon for all to 
see what arcing can do.  


Christopher Freitas
OutBack Power Systems, Inc.
cfreitas at outbackpower.com  www.outbackpower.com
Tel 360 435 6030  Arlington WA USA

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