equipment grounding conductors [RE-wrenches]

[Larry Crutcher, Starlight Solar]

Drake Chamberlin wrote:
> 
> Correction:
> 
> We size the wire for 125% short circuit current.
> 
> Drake 
> 

Drake,

The 125% rule is correct for determining the ampacity of your source 
circuit current. However, you must add an additional 125% to size the 
conductors and the overcurrent protection. This means you need 156% of 
the Isc for all PV wire runs and the fuses or breakers protecting each 
string. Also, do not forget to derate for temperature.

Larry Crutcher
Starlight Solar
Yuma, AZ
Renewable Energy Products Powered by STARLIGHT


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