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Support for other GFCI CTs?

Hi there! I have a Juicebox that I've converted to an OpenEVSE controller, however, I'm getting GFCI faults. I've ordered an OpenEVSE GFCI CT as a workaround, but it'd be nice to be able to support other CTs. The regular CT has an offset adjustment but there doesn't seem to be one for the GFCI CT, and I can't find any code that references the expected resistance values. Thanks!
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Each different coil requires a different burdon resistor to trip at the correct point. The GFCI circuit is all hardware, there is no software adjustable component for GFCI.

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