If the unit is 4500 watts it will require a 30 amp circuit breaker, #10
cable of three wires: Two hot and a ground.. There is no neutral used



"Daniel Larsen" wrote in message
...
Recently went to install a new hot water heater as the old one was
leaking, old one was a small 110v unit but I opted to go to a large 240v
unit to replace it. When I opened the wiring panel there are only a black
and red wire, I was under the impression that 240v required 2 hot wires
and a neutral. Is there something that I am missing or how differently do
I wire this in. I have a 240v, 30amp breaker but don't know how to wire
it with only a single hot and neutral wire.