Hot tub wiring with no Neutral

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iwire

Moderator
Staff member
Location
Massachusetts
Hello!

While replacing an old hot tub with a newer hot tub I noticed the new tub is a 4 wire, where the old tub was a 3 wire.
The service is VERY far away so running a new line with the Neutral is very costly.
Are there other options to get by without the Neutral?

Here is the manual for the tub in question.
http://platinumhottubs.com/manuals/TheLegendOwnersManual.pdf

Thanks again.

The only code compliant options I would consider are running the new circuit or feed a transformer at 240 with the existing circuit and create a new neutral at that point. Either way is not cheap.
 

augie47

Moderator
Staff member
Location
Tennessee
Occupation
State Electrical Inspector (Retired)
have you checked at the hot-tub disconnecting means ? often the neutral is brought to that location for the GFCI breaker and simply not extended to the tub itself.
 

iwire

Moderator
Staff member
Location
Massachusetts
have you checked at the hot-tub disconnecting means ? often the neutral is brought to that location for the GFCI breaker and simply not extended to the tub itself.

I looked at the wiring diagram in the link he posted it shows a 240 volt pump 120 volt blower, 120 volt ozone thing, 240 volt heater etc.
 

jap

Senior Member
Occupation
Electrician
I think Augie was saying that although the orginal hot tub did not require a neutral, the original installer may have brought a neutral to the disconnect anyway and would be worth checking to see if it's there or not.

JAP>
 

JFletcher

Senior Member
Location
Williamsburg, VA
How does the mfg state #6 wire with a 48A load? Spas have to be sized 125% or 60A, and #6 NM is good for 55A... or are they figuring thhn2 and conduit all the way?

welndmn, might want to check the awg of the existing wire... even if you have 4 wire at the disco, it might be #8.
 
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