[RE-wrenches] 1.56 Rule

[drake.chamberlin at redwoodalliance.org]

The logic of this rule for calculating PV amperage seems a little off to 
me. - It is a calculation that is set in stone as a bedrock truth of the 
solar industry. (1.25 X 1.25 = 1.56).

The multiplier of 1.25 for a continuous load is relevant for sure. To 
multiply again by another 1.25 seems excessive.

Although it is certainly true that modules put out considerably more 
power when it is cold out, in my experience that is almost all due to 
the increase in voltage. The amperage goes up a little, but no where 
near 25%.

Just because I haven't seen it doesn't mean it can't happen. Are there 
circumstances where the amperage of a PV module can go up by 25%?

Thanks,

Drake

_Drake Chamberlin_

_Athens Electric LLC_

_Ohio Electrical Contractor's License 44810_

_NABCEP Certified PV Installation Professional_
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