Trying to install a hot tub. The circuit board on the actual hot tub has two hot poles and a ground bar, but no place for a neutral. Is this correct? Could there really be no need for a neutral?
2006-11-07 07:19:46 · 9 answers · asked by randyken 6 in Home & Garden ➔ Do It Yourself (DIY)
I have the main panel wired (correctly) to an external GFI 50A breaker. It is on it's own circuit. It just happens that the correct voltage is on the hot poles on the hot tub panel (120V each) but the voltage seemingly disappears somewhere in the relays between the main poles and the heater. That is why I am confused.
2006-11-07 08:21:18 · update #1
It is a 240V, single-phase, two-pole system
2006-11-07 08:28:36 · update #2
As an electrician this is the sort of thing I would want to look at first so that I don't misunderstand what you are saying. The fact that that you are asking questions means you don't have enough info to be wiring this safely. A hot tub will have people in it (in water!!!) don't take any risks get an electrician in to wire it up!!! (or more info if you are one; try the manufacturer)
By the way there might be an isolation trransformer meaning you can't get a voltage to earth. Try measureing between 'poles'.
2006-11-07 09:44:42 · answer #1 · answered by slatibartfast 3 · 3⤊ 0⤋
some hot tubs have a 220 to 12volt or 24 volt transformers to step down for the relays, but most of the new ones require the nuetral, the disconnect ( you do have a 50 amp GFCI disconnect right? as you did not mention if your panel was in line of sight from the tub, if not then you NEED a GFCI disconnect for spas), some have it with a nuetral, some don't. It's best ot get the ones with a nuetral as you can always remove that feature if your tub is straight 220 with no nuetral. don't forget ot pull the ground all the way back to the main panel.
2006-11-07 15:05:33 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Is this a listed hot tub? Check for the wiring schematic on the tub or in the manufactures specs. If you cannot determine from these call a licensed electrician or local electrical inspector, but make sure you have it wired right and to the article 680 of the NEC before use or you may have a shocking experience!
2006-11-08 14:18:01 · answer #3 · answered by recip529 1 · 0⤊ 0⤋
I agree with the post from the previous electrician. If you are unsure of what you are doing you NEED to call in someone that knows. The NEC (national electric code) has added a new code for Hot Tubs that also requires (if outside) a "Grounding grid" in the concrete or pavers 3 feet around the hot tub. If it is outside and on pavers or a conrete slab this is a MUST. One way aorund this is to put a wood deck around the base of the tub if there is no way of installing the grid. Remember you have ELECTRICITY and HUMANS in VERY close proximity You need to be SAFE.
2006-11-07 11:28:30 · answer #4 · answered by Larry L 1 · 2⤊ 0⤋
a 240v circuit does not have a neutral if you are using a three wire line the two coated wires would connect to the two hot terminals and the bare to the ground using an gfci is the right thing to do
2006-11-08 00:47:52 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Fist understand that SOME hot-tubs require 240, like your dryer.
I assume that you do not have the manual, since you are asking here. I will also assume that the poles are not labeled since you are asking.
My GUESS is that you are trying to hook up 120 to a 240 receptor.
Try not to shock yourself...
Good luck!
2006-11-07 07:27:16 · answer #6 · answered by Scott D 4 · 0⤊ 0⤋
Is it 220 volts then the 2 black wires will be hot to get the 220 volts
2006-11-07 07:26:49 · answer #7 · answered by aussie 6 · 0⤊ 0⤋
The relays are 24 volt. you have a transformer that is probably 120 volts transforming to 24v. You have to have the neutral connected.
2006-11-07 14:41:52 · answer #8 · answered by T C 6 · 0⤊ 0⤋
It's 3 phase/220. and if you don't know what you're doing consult an electrician.
2006-11-07 07:33:36 · answer #9 · answered by pjnickles 2 · 0⤊ 2⤋