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  1. necnotevenclose

    Lighting Control Panels / Relays AIC ratings

    I'm feeding a 277V/1PH lighting control panel from a 480Y/277V panel that has an available fault of 16k Isc. The lighting control panel has a rating of 14k AIC at 277V. Would the available fault current for a single phase load be less than a 3-phase load?
  2. necnotevenclose

    Selective Coordination

    It has been my understanding that when you do a coordination study you are not allowed to overlap OCPD. I have a few cases where the CB does not overlap but the curves are right next to each other. Is that considered overlap?

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