ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
HVDC Greece to Crete
by gfretwell - 08/06/20 02:28 AM
310.15 (B) 7 Feeders
by HotLine1 - 07/31/20 02:29 PM
What would be the ideal solution?
by Fleppin - 07/21/20 12:42 AM
NESC question
by gfretwell - 07/16/20 04:17 PM
Code Violation or just not good Practice?
by HotLine1 - 07/16/20 03:03 PM
New in the Gallery:
Facebook follies, bad wiring
FPE in Germany pt.2
Who's Online Now
0 registered members (), 14 guests, and 20 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
another pool q #54144 07/18/05 09:23 PM
Joined: May 2001
Posts: 376
F
frank Offline OP
Member
A friend had an in ground pool installed with extra low voltage (12v) haywood lights.Gfci protection was installed and does not trip .A rather large shock can be received if you lean over the edge of thr pool and dip you hand into the water. The company that did the install has been working at it for a week now and after trying to blame the fault on the poco now says the problem is that the haywood lights have ground wires that should not be connected. They’er reasoning is that they have been installing this type system for years and the fixtures never had ground wire before. They now have disconnected the grounds and say they are waiting for haywood to send a letter that states it’s ok without ungrounded .This company has called the poco and demanded that they come out and lower the voltage because the lights are rated at 110v and the power to the house is a whopping 125v.Im still lmao and the poco won’t deal with them for obvious reasons .As it stands now the pool can’t be used until this gets figured out. Im not involved and want it to stay that way especially since im sure there was no inspection work industrial exclusively and must say this is not my area of expertise’s. I think that the fault may be under 5 ma and not tripping the breaker( could the ground and neutral be bonded by mistake ?).Any ideas would be appreciated as the installer is asking if I can help because their electricians can’t figure it out. I have told them they had better get it inspected before using it or they will be liable period. thanks

Work Gear for Electricians and the Trades
Re: another pool q #54145 07/19/05 08:52 AM
Joined: Jun 2001
Posts: 161
M
Mike Wescoatt Offline
Member
Is everything in, around, and under the pool bonded together, including all electrical devices, per NEC? Galvanic action can set up some pretty good currents. Do you get the problem when the power is off to the lights?
One side of their LV x-fmr (or the center tap) should be tied to ground otherwise you can get a floating voltage that can be very high, especially if there is a problem with the windings in their x-fmr. (Don't change their product, just investigate) Is the x-fmr listed for such a use? I have found many in the past that aren't...


Mike Wescoatt
Re: another pool q #54146 07/19/05 11:54 PM
Joined: May 2001
Posts: 376
F
frank Offline OP
Member
Yes the problem only occurss when the lights are energized.I mentioned the xformer center tap to them but don't know if it has been checked.Will also mention the bonding issue as well.thanks again


Featured:

2020 National Electrical Code
2020 National Electrical
Code (NEC)

* * * * * * *

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
akmaster
akmaster
alaska
Posts: 74
Joined: June 2012
Show All Member Profiles 
Top Posters(30 Days)
BigB 2
Popular Topics(Views)
268,638 Are you busy
202,978 Re: Forum
191,352 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3