Fw: Trace Charge Controller Ratings [RE-wrenches]

[Allan Sindelar]

William,
It's not a fable, it's real.

All equipment must be operated at 80% or less of its nominal rating, unless
it is specifically listed for continuous duty at 100% of rated capacity.
That's the normal 125% issue that is inherent in ampacity calculations. PV
source circuits have a separate and additional 80% derating to accommodate
above-STC insolation, edge-of-cloud effect, etc. That's the other 125%, and
it is specific to PV source circuits. 125% X 125% = 156%.
Allan at Positive Energy.

----- Original Message -----
From: "William Miller" <wrmiller at slonet.org>

> So, does this mean that the fabled 1.56 rating is just a fable?  I've seen
> that figure used frequently on this list but apparently no one knows where
> it comes from?!?
>
> William Miller
>
>
> __________________________________________________________________
> William Miller

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