[Phil P]

Hi

The OP is talking about using a “pig tail” to reduce the 50 amp cord to a 30 amp cord then using a “pig tail” to go back to a 50 amp outlet.

A 30 amp cord is only 3 wires.

If the OP is using the adapters similar to the one I pictured then he would trip the circuit breaker on the supply end of the cords because the 30 amp adapter crosses Line 1 and Line 2. That would be a dead short to the 50 amp supply outlet.

If the OP is using a “pig tail” he has made up himself then he would have combined the neutral and the ground leads and uses the 30 amp cord natural wire for one of the lines in both “pig tails” at both ends of the 30 amp cord. This is not a good idea either.

Phil P