Ground fault [RE-wrenches]

[Christopher Freitas - OutBack Power]

> The ground fault is likely the result of the board insulation
> disappearing.

Ground fault protection may not have prevented the Solar Boost failure 
but it can be very helpful in preventing the spread of the damage beyond 
the original problem.  I have seen wires fall out of loose melted 
terminal blocks on numerous occasions with many "UL" listed products - 
causing other problems to occur (such as battery short circuits).  

Eliminating the ground fault protection and replacing it with fuses or 
breakers in both the negative and positive conductors will not eliminate 
the pssibility of risk or damage.  Often a fault can be limited by the 
material completing the fault circuit - so a fuse or breaker may not 
trip (especially with a current limited energy source such as PV). There 
are trade-offs involved with each method of protection.  

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

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