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#39919 - 07/06/04 08:32 PM Ho tub service call  
derater  Offline
Joined: Mar 2002
Posts: 179
Got one coming Friday- owner had circuit run and h.depot 50a gfi disco installed by someone else.He called me today after tub installers had been there;When the unit was energized it quick tripped the bkr.(several attempts)One of the crew must have a little elec. insight; owner said the guy found "something" wrong in the main(?)panel, and changed "something' AND drove ground rod at disco.Net result was delayed trip.I had them trip on leaky heaters; anyone shed any light on potential problems. What are the odds it's a bad gfi-disco?

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#39920 - 07/06/04 09:19 PM Re: Ho tub service call  
electricman2  Offline
Joined: Nov 2003
Posts: 269
Thomasville, NC USA
Five will get you ten its a fault in the tub. Is the breaker tripping on overload or gound fault? I dont know what they thought driving a ground rod was going to do. [Linked Image]


#39921 - 07/06/04 10:13 PM Re: Ho tub service call  
Electricmanscott  Offline
Joined: Jan 2002
Posts: 1,457
Holden, MA USA
I was expecting something else with the topic being "HO TUB" [Linked Image]

#39922 - 07/07/04 10:03 PM Re: Ho tub service call  
derater  Offline
Joined: Mar 2002
Posts: 179
Electricman 2-short answer- I don't know-the man said before the installer tinkered with the circuit that it tripped immediately-after that it would hold for 20-30 min. before tripping-the tub is new-could be defective though-besides the heater, any thoughts on what else may be doing this?

Scott-yeah, I found the hard way one can't edit topic name.

#39923 - 07/08/04 07:06 AM Re: Ho tub service call  
sparky  Offline
Joined: Oct 2000
Posts: 5,311

my first assessment would be N-G confusion/ bonding beyond the gfi protection

next would be to start disconnecting one item at a time, heaters can be two units, motors can be multiple

good luck


#39924 - 07/08/04 02:56 PM Re: Ho tub service call  
electricman2  Offline
Joined: Nov 2003
Posts: 269
Thomasville, NC USA
Put a clamp-on ammeter on the supply conductor to determine if tripping is overload or not. If not what Sparky said may apply, bonding between neutral and EGC downstream of GFCI.


#39925 - 07/08/04 04:25 PM Re: Ho tub service call  
earlydean  Offline
Joined: Dec 2003
Posts: 751
Griswold, CT, USA
I found a problem with GFCIs tripping is often water in the equipment. It goes away when the equipment dries out.


#39926 - 07/09/04 09:20 PM Re: Ho tub service call  
derater  Offline
Joined: Mar 2002
Posts: 179
Thanks for the replies all;Elec. 2; good bet;
amped out at 18a +/- p/ leg; noodle at the line out of main a bit loose-but still tripped at 15 min. or so;then the HO starts playing with the controls, pushes the lights
button and the pump starts,(brand new unit)
so I tell him I think he has issues with the maker.Clearly something wrong in the controls; I'll post it if I hear what the problem was.

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