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View Full Version : Connecting power generator to incoming mains


macvan
May 21, 2010, 05:00 AM
I have to install a 100kva generator at an office block. He incoming mains goes through a 150A 3PH isolator. I have 2 150A 3PHcontactors that I need to use as the ATS, which will be installed next to the DB Board and isolator. There are also 3 surge arrestors in the DB board.Where do I interuppt the incoming power before or afer the isolator

tkrussell
May 23, 2010, 06:01 AM
I will assume an "isolator" is nothing more than a disconnect switch of some sort.

The ATS needs to be downstream of the disconnect.