Doesn't a GFI breaker need to sense the neutral current which it compares to
the hot current, if different then trip. So it would need to have a neutral
to the loads as well as a neutral to the ground bus.

wrote in message
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I am replacing a GFI breaker. The old breaker has 2 white wires (one
striped). The new breaker has only one white wire.

Is the new breaker compatible?