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Originally Posted by jxnbbl
If I read this correctly you want to put a transfer switch in so you have only shore power or the inverter powering everything in the trailer. That wiring is not "difficult" to get it to work but I would not "I can jumper one of the hot legs then..." (if I read this correctly it is 50A service) If that is jumping between one bar to another or even powering the output of both legs at the transfer switch if the "input leg" isn't powered. Its just dangerous.
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The dogbone 'acts' not only distributes 30A/20A/15A across the two inputs of a 50A trailer but think of the use of the dogbone and the person plugging in the cord as the transfer switch. The jumpering would not work if you, for instance plugged into a faulty 50A service at a CG, with one leg dead the transfer switch would power energize the circuits with the inverter power at the same time as the CG power source with your jumper across the circuits.
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I would merely be replicating what is pictured below inside of the transfer switch on the 120v 30 amp input, jumping hot one with hot two. Is that not exactly what the dog bone does?
In a 220v configuration one leg of the 120v inverter input would be jumped from L1 to L2 so that both legs of the panel inside the rig got 120v. The neutral wire would still be connected to the neutral bar, and the ground to the ground.
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