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Also, the cost and ease of the electrical work will depend on the access to your breaker panel and how far away it you will be putting the tub. Where in the house is the main electircal panel? How easy is the access to it? ( a finished room vs unfinished basement). How far away from the electrical panel is the tub going to be?Do you have a place outside, near the tub that the sub panel will be installed? good luck
Cass, The Caspain requires a 220 line and it sounds like you have the space in your panel. From the panel to outside, the electrican will run an electrical line to the G.F.C.I. protected subpanel. This is suplied by Tiger River and is a "mini" weatherproff circuit box that has 2 circuit breakers ; a 20 amp and a 30 amp circuit. One is for the heater, the other for the pumps. Your electrician will run a line from this sub panel to the tub. Make sense?
Also important is making sure you have enough existing capacity to power your spa. This isn't usually a problem unless you have electric heat, hot water, dryer, A/C, etc. Your electrician will be able to tell if you have the existing capacity to run your spa. Hopefully you won't need a service upgrade to provide the additional power- This will push your electrical costs into the $1K+ range pretty quickly.GFCI means Ground Fault Circuit Interrupt, and it's a type of circuit breaker or outlet that will very quickly trip when certain faults in the wiring are detected. The idea is to prevent electrocution. Standard circuit breakers only protect the wiring, not the users of the equipment.GFI protection is required for outdoors, bathrooms, kitchens, etc..... usually where water danger exists.