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4 wire GFCI's do not exist. A 240 volt, 50 amp GFCI breaker has three connection points (2 hots and a neutral). Some hot tubs do not use a neutral (the bigger Sundance and Jacuzzi tubs come to mind). If you don't need a neutral at the hot tub, don't connect anything to the neutral terminal. Be sure that you do connect the little white pigtail on the breaker to the neutral/ground buss bar. You must still run a proper ground out to the hot tub. Do not connect this to the breaker. Also, do not ground the load neutral as the other post suggested. That is a guaranteed way to trip the GFCI.
: When you need to wire a 3-wire 240V 50A with
: ground to a 4-wire GFCI? How can you achieve
: this hook-up without the neutral at the hot
: tub? Are these Hot Tubs legal to use
: anymore? If legal, how can you wire it to
: make it safe for use?
PLEASE NOTE: We are Roberts Hot Tubs Inc. (manufacturers of traditional wooden hot tubs)! If you found this webpage through a search engine while searching for a different brand of spa, we are not them! We simply appeared in your search due to that name being talked about on this particular web page. The phone number below will reach Roberts Hot Tubs, not the manufacturer of the brand of spa you're searching for. This is a public forum and you're more than welcome to post a question asking for contact or other information for a particular brand of spa. Almost certainly someone will be able to assist you.