Pool and Spa
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Hello. You're getting current on your ground because you have no ground. This is most likely induced voltage(depending on how many volts you are getting on it). You have to ground your hot tub and you also have to put it on a GFCI as per NEC 680.43 a-2, a-3. You'll also need to bond metal-to-metal on frame or base as per 680.42 B. This will solve your problem with getting shocked.
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