ECN Forum Forums General Topics of the Trade General Discussion Area transfer switch

Make sure you have the correct transfer switch for the type of generator being installed.

If the generator neutral is bonded to the frame by the manufacturer, a transfer switch that breaks the neutral (three pole) is required.

Here is a basic diagram for a typical generator with a bonded neutral.



However, if the generator neutral is not bonded to the frame, a transfer switch with a solid neutral buss (two pole) is should be used.

Here is the basic diagram for a typical generator with a floating (not bonded) neutral.



Hope this helps,

Ed