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Careless--Block t1_jdbpeqg wrote

That's why GFCI's are usually used in hot tubs, to detect ground faults. If you're not getting any luck finding an AFCI/GFCI for this purpose, it might be better to use two 120v GFCIs in series.

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Diligent_Nature t1_jdd591v wrote

> two 120v GFCIs in series.

No. You should never put GFIs in series. Besides, that would trip instantly. A 120V GFI compares neutral current to hot current. If they differ by more than 5mA , it trips. A 240V circuit doesn't use a neutral. You would use a 240V double pole GFCI/breaker. It compares the L1 current to the L2 current. If they differ it trips.

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