The sub-panel does not have the neutral bonded to the ground, I can confirm that. The transfer switch has separate connections for hot and neutral for each connection so I think I am okay here too. There may be a neutral to ground bond at the main panel - I will check this out.
VintageRacer wrote:
Make sure your sub panel does not have neutral bonded to ground. It must separate neutral and ground, the transfer switch must switch both neutral and hot to the inverter, which must bond neutral and ground. Neutral is always bonded to ground at one point only, and that is the source of the power. Remember that GFCI - ground fault circuit interrupter - is a bit of a misnomer. The device does nothing with ground at all and can be installed in a circuit that does not have ground (such is code-allowed for protecting old 2 conductor wiring in old houses). It does trip if there is any difference between the current flowing in the hot conductor and the current flowing in the neutral conductor. Having neutral bonded in two places can create such a difference.
Brian
