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m-h wall pack #182745 12/08/08 08:02 PM
Joined: Dec 2001
Posts: 444
S
Sandro Offline OP
Member
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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Re: m-h wall pack [Re: Sandro] #182749 12/08/08 09:14 PM
Joined: Jul 2002
Posts: 680
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walrus Offline
Member
Bad ballast? seems like the only thing in there that would be grounded

Re: m-h wall pack [Re: walrus] #182750 12/08/08 09:48 PM
Joined: Feb 2003
Posts: 939
F
frenchelectrican Offline
Member
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?)

Re: m-h wall pack [Re: frenchelectrican] #182788 12/10/08 07:51 PM
Joined: Dec 2001
Posts: 444
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Sandro Offline OP
Member
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.





Re: m-h wall pack [Re: Sandro] #182794 12/11/08 12:48 AM
Joined: Jan 2006
Posts: 558
R
Rewired Offline
Member
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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