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Thread: max output amps on optimizers

  1. #1
    Join Date
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    max output amps on optimizers

    When sizing conductors connecting to a string of Solaredge optimizers, do I use the actual circuit current (string W/ 350VDc or 400 VDC depending on inverter) or the max rated optimizer current of 15A?

  2. #2
    Join Date
    May 2013
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    Quote Originally Posted by Zee View Post
    When sizing conductors connecting to a string of Solaredge optimizers, do I use the actual circuit current (string W/ 350VDc or 400 VDC depending on inverter) or the max rated optimizer current of 15A?
    For ampacity purposes, any place you'd ordinarily use 1.25*Isc, you would use the 15A optimizer max current value.


    Any place you'd ordinarily use Imp, like voltage drop or equipment labeling, you'd use the P=I*V current based on the STC power and the inverter operating voltage.

  3. #3
    Join Date
    Oct 2009
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    Austin, TX, USA
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    Quote Originally Posted by Carultch View Post
    For ampacity purposes, any place you'd ordinarily use 1.25*Isc, you would use the 15A optimizer max current value.


    Any place you'd ordinarily use Imp, like voltage drop or equipment labeling, you'd use the P=I*V current based on the STC power and the inverter operating voltage.
    I use 15A for all that stuff; it's the worst case scenario.

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