"Rich256" wrote in message
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Toller wrote:
"RBM" rbm2(remove wrote in message
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Is it a double pole breaker that was giving you 240volt and then
stopped, or a newly installed breaker that should deliver 240 volt. If
it is a new installation , be sure you are using a double pole breaker,
which is one that connects to two different busses of your panel, as
opposed to a split breaker, which connects to one buss of the panel and
has places for two wires to attach to it

A split breaker gives 0v, hot-hot.

If I wanted to make a wild guess, the OP is probably measuring 120v H-G
for both hots, which is quite correct. OP, you have to measure H-H.

Could also be that half the breaker is tripped.

No, it would then be an open circuit and measure zero.