Bill,
If the generator is intended for portable use the application of 250-34 will require that the grounded conductor be bonded to the generator frame. When you connect this generator to a transfer switch that has a grounded (neutral) conductor solidly connected to the building neutral, you must, according to 250-142(b) remove the neutral connection to the generator frame and MUST use a 4 wire connection between the transfer switch and the generator. Any other type of installation is in violation of the NEC.
I am aware of equipment that is on the market that does not comply with the NEC rules.
Don(resqcapt19)
