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Installing Hot Tub Electrical Circuit Wiring


By Dave Rongey - Summary:

Hot Tub Wiring Information for RCD and GFCI Electric Circuit Protection for Hot Tubs

Hot Tub Wiring Information for RCD and GFCI

Electrical Question: I bought a 220 volt 30 amp Hot Tub with 3kw heater, how to I connect it up and what size cable should I use.

This electrical question came from: Liam , a Homeowner from Welwyn Garden City, UK

See more about Home Wiring in the UK

Dave’s Reply:
Thanks for your electrical question Liam

Hot Tub Wiring

RCD and GFCI Protection for a Hot Tub Electrical Circuit

Liam, the UK code no doubt requires the RCD or residual-current device which is the equivalent of GFCI or Ground Fault Circuit Interruption protection as the USA requires which is accomplished by installing a GFCI Circuit Breaker. The wiring must be sized according to Hot the specifications found within the Hot Tub Installation Manual.

Hot Tub Diagram and Information
The table found on the Hot Tub Section of this web site gives an example of wire sizes for sample Hot Tubs, and you will see that the wire sizes depend on the equipment that is included with each hot tub, which describes that not all hot tubs are created the same due to a wide variety of options which may require additional electrical circuit power.

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