An existing facility is served from a exterior 2500KVA transformer with 480Y/277V on the secondary. The present neutral to ground bond is at the main switchboard. The client would like to install a Manual transfer switch outside that would get its normal power from the transformer and back up from a portable generator. A couple of questions:
1) Would the Transfer switch require a OCPD w/ gfi protection on the normal power side since this is the first termination of the transformers secondary conductors?
2) If yes to #1, then wouln't the neutral to ground bond need to occur at the transfer switch?
thanks
1) Would the Transfer switch require a OCPD w/ gfi protection on the normal power side since this is the first termination of the transformers secondary conductors?
2) If yes to #1, then wouln't the neutral to ground bond need to occur at the transfer switch?
thanks