[RipNC]

Jeff,

As Bill said - if you are hooked up to standard CG 50A shorepower and put your leads on L1 and L2 inside your rig you will read +/- 240v. Granted, after the main breaker there are typically no 240v brakers on the panel legs (only single pole 120v breakers), but 240v is there at the main (double pole 50A) breaker.

However, most OEM 5th wheel generators (aka Onan) only output 2 - 120v circuits which are on the same sine wave and each feeds L1/L2 at our transfer switch. On our rig (Onan running) with leads on L1 and L2 will read 120v on a multimeter vs the 240v I get on shorepower.