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#182745 - 12/08/08 09:02 PM m-h wall pack  
Sandro  Offline
Member
Joined: Dec 2001
Posts: 444
Stoney Creek, ON, Canada
Replaced a wall light with a brand new 400w metal halide wall pack on an old hotel for a customer.

Upon energizing to test it, the lamp would not light. While trouble shooting, it turns out that when only the ground wire was disconnected, the lamp would light. Of course, when the ground was connected, the bulb would go out.

Any ideas?


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#182749 - 12/08/08 10:14 PM Re: m-h wall pack [Re: Sandro]  
walrus  Offline
Member
Joined: Jul 2002
Posts: 680
Bangor Me. USA
Bad ballast? seems like the only thing in there that would be grounded


#182750 - 12/08/08 10:48 PM Re: m-h wall pack [Re: walrus]  
frenchelectrican  Offline
Member
Joined: Feb 2003
Posts: 939
Wi/ Paris France { France for ...
What voltage this luminaire is wired up for ? I have a hunch it may have wrong ballast to use in there.

Merci.

Marc


Pas de problme,il marche n'est-ce pas?"(No problem, it works doesn't it?)


#182788 - 12/10/08 08:51 PM Re: m-h wall pack [Re: frenchelectrican]  
Sandro  Offline
Member
Joined: Dec 2001
Posts: 444
Stoney Creek, ON, Canada
Originally Posted by frenchelectrican
What voltage this luminaire is wired up for ? I have a hunch it may have wrong ballast to use in there.

Merci.

Marc



It's a tri-tap ballast. The proper 120V lead is connected, the other two leads are factory sealed and unexposed.

The fixture is brand new, complete with lamp and ballast. I have used many of this same type of fixture without any problem.

I take it nobody else has encountered this type of problem before.






#182794 - 12/11/08 01:48 AM Re: m-h wall pack [Re: Sandro]  
Rewired  Offline
Member
Joined: Jan 2006
Posts: 558
Hamilton, Ontario, Canada
Is the capacitor in the fixture metallic by chance?? I would start looking at something between the ballast output lead (if not the ballast itself) and the socket accidentally touching ground or faulted to ground, and my first bet would be a capacitor with a metallic case and an internal problem ..


A.D



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