A hot tub is a big electrical load sitting in a tub of water, which is why the code has specific rules for how it’s wired. Most outdoor hot tubs run on a dedicated 240-volt circuit, often 40 to 60 amps depending on the model, so the first step is making sure your panel has room for it. Smaller plug-in models run on 120 volts, but they still need their own GFCI-protected outlet.
Hot tubs require GFCI protection, and there needs to be a disconnect within sight of the tub so it can be shut off for service. That disconnect must be at least 5 feet from the water, so no one can reach it while sitting in the tub. Nearby outlets and lighting have their own distance and GFCI requirements too.
Bonding matters here too. Just like with a pool, a hot tub’s metal parts and nearby metal need to be bonded so everything stays at the same voltage. What’s required depends on whether it’s a self-contained unit sitting on or above the ground or one built into the ground or a deck.
Never power a hot tub with an extension cord, and don’t leave the wiring as an afterthought when you pour the pad. We can plan the circuit, disconnect, and bonding before delivery day so your tub is ready to fill.
