Hot Tub Wiring

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  #1  
Old 11-07-05, 03:29 PM
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Hot Tub Wiring

I've been reading this forum for several months now. Learning and listening.

One question has come up several times and no one wants to address it.

Spa Wiring.

Each post indicates there are many codes that deal with spas and hot tubs, yet know one goes on from there.

It might be helpful to post the special codes that deal with hot tub and spa installations.
 
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  #2  
Old 11-07-05, 04:00 PM
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Well the truth is that they have been listed, numerous times. Perhaps not all at once, but they all have been listed.

Nobody want to list them because they are numerous and complex. With spas and swimming pools, it is better to examine the setup and then plan a wiring strategy, rather than trying to plan a wiring strategy based on the codes alone.

In general, the codes are straight forward and include, but are not limited to:

For wiring run outside, the ground wire must be insulated. A bare ground wire, such as in a UF-B cable is not allowed.

GFCI protection must be provided.

A convenience receptacle must be provided within 20 feet of the edge of the pool or spa.

The spa or pool and any metal must be bonded to the pump.

Cord and plug connected equipment must be twist-loc connections and more than five feet from the pool or spa edge and have shorter than a 3 foot cord.

No overhead wires.

No underground wires.

Now I have simplified some items and not covered everything. But you get the idea.
 
  #3  
Old 11-07-05, 04:40 PM
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Originally Posted by gmasingale
It might be helpful to post the special codes that deal with hot tub and spa installations.
That's easy.

Step 1) Get a copy of the NEC appropriate to your local jurisdiction.

Step 2) Become very familiar with Chapters 1-3, and know how to look up things in the rest.

Step 3) Read and memorize Article 680, everything but parts III, V and VI.

That should cover the "special" rules for wiring a spa.
Problem is folks don't want to hear that. They want a copy of the simple "Spa Wiring" brochure. Sorry, it's not that easy.
 
  #4  
Old 11-08-05, 01:52 PM
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Originally Posted by gmasingale
Each post indicates there are many codes that deal with spas and hot tubs, yet know one goes on from there.
A spa installation almost always requires several different techniques, any one of which can be confusing for an amateur. At the very least, you need to consider: conductor ampacity, GFCI protection, grounding, bonding, conduit installation, subpanel installation, demand load, and general workmanship. Entire books have been written on each of these subjects.

The bottom line is simply that a spa installation is complicated and will require a lot of learning that an online forum simply cannot provide. Doing it yourself, correctly and safely, means reading some actual books, formulating a thorough plan, and meeting with an inspector.
 
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