Connecting 220 to Hot Tub...

gmcf2004

Breaker keeps tripping. Everything is wired per wiring diagram as far as I can tell. This was done by an electrician and even he could not figure out why the breaker trips. I am a novice but the panel box in my garage has a 40 amp breaker. The GCFI at the tub is 50 amp. Would this cause the breaker to trip?

Salem747

What is the tub rated for? Our tub is about 47A so if you had a 40A breaker in the circuit it would trip it. Remember when you first turn on the tub with cold water in it it will want to run ALL the pumps and the heater to get things crackalackin.

Is this a brand new tub & circuit and this is the first time trying it? Is the breaker in the panel one opposite phases? I am pretty surprised that your sparky can't figure this out, is this guy licensed?

frenchelectrican

Did you check the netural and ground connection at the hot tub breaker box ? normally on hot tub panel you should have netural and ground seperated the only time you will see together is the main discconection location aka main load centre not the subpanels.

And make sure there is no bonding screw or jumper on the hottub panel that first thing it will kick the GFCI out real quick

If your electrician can not find the cupit the simple way is ohm read the hot tub connection on netural and ground it should be not on together if that the case it will trip if read open conuity then read either hot conductor to ground that should read open check out both and that read open you will have to look very closely to the motours and heater both are likey cuprit.

Merci,Marc

300zx

Make sure you have the breaker hooked up correct the neutral from the hot tub hooks to the breaker and the white pigtail wire that is attached tocted the breaker to the nuetral bar you do have 4 wire right ? make sure they are seperated this is a 20 amp but same hookup

jbfan

New or used?
Might be time to get a real electrician out to check it out.

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Stubbie

Would only be the cause if the tub requires a 50 amp branch circuit in which case the is the possibility the 40 is too small.. But you don't give enough details....it's all in the details.... Like these

Which breaker is tripping? The 50 gfci or the 40 in the house main panel.

Is the breaker tripping instantly as soon as the spa starts or calls for heat or motors start.

Is the tub 3 wire 220 or 4 wire 120/240?

Does the tub require a 50 amp branch circuit ?


As JBfan said new or old hot tub?

Edit: as JBfan is saying a 'real electrician' should be able to determine if the electrical supply is correct and connections are correct or any faults exist with the wiring or devices. If the tub is at fault he should also be able to determine that...maybe not exactly what is at fault with the tub but he should be able to tell you if it is the tub or not... at the least.

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Stubbie

jbfan

Hey Stubbie. Fish not biting?

__________________
Yes I am a Pirate, 200 years too late. "Jimmy Buffett"

Stubbie

Actually they are but weather has been windy...We are getting into the winter pattern in a few weeks and I'll be mostly fishing for crappie. I will post a few pictures when I finally get around to it....

Hey...I caught a striper.... only yours would have ate mine for lunch....

Dropped in today to see what you guys are up to....

__________________
" One nice thing about the NEC articles ... you have lots of choices"

Stubbie