Pond Boss Forums AERATION Systems questions Used Gasts

Straight 120V @ 100 amps @ 260' will require #500MCM (kcmil) alum cable.

If you drop a 10Kva 240x120 transformer at the end, run 240V from the main breaker to the barn, run the 224 alum, after the transformer go the circuit breaker panel, you'll have 80 amps @ 120Vac for use.

1/0 alum will support a 15Kva transformer for 125 amps for that run.

You can probably get a 10Kva transformer for about $500.00, if you shop around. I always use Dongan shielded transformers. They are a bit more, but the output is quite clean. I always have expensive electronics on the other end and that's the reason for the shielded transformers. It's a minimal cost to help protect expensive devices.