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Are MH fixtures nonlinear loads? #84809
05/07/03 10:25 AM
05/07/03 10:25 AM
steve66  Offline OP
Joined: Mar 2003
Posts: 25
I'm wondering if metal halide fixtures with pulse start lamps are nonlinear loads. This will determine if I need to derate the service conductors and panel feeders to 80 percent due to 4 wires in a conduit (NEC 310.15 B2 and B4).


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Re: Are MH fixtures nonlinear loads? #84810
05/07/03 11:30 AM
05/07/03 11:30 AM
Bjarney  Offline
Joined: Apr 2002
Posts: 2,527
West-Southern Inner-Northeast ...
Yes it is, as is discharge lighting in general.

Re: Are MH fixtures nonlinear loads? #84811
05/07/03 09:43 PM
05/07/03 09:43 PM
golf junkie  Offline
Joined: Apr 2001
Posts: 507
York, NE

Re: Are MH fixtures nonlinear loads? #84812
05/08/03 10:51 AM
05/08/03 10:51 AM
steve66  Offline OP
Joined: Mar 2003
Posts: 25

Re: Are MH fixtures nonlinear loads? #84813
05/08/03 12:09 PM
05/08/03 12:09 PM
engy  Offline
Joined: Jun 2002
Posts: 15
Dare I say No?

Are these electronic ballasts?

The cuts I just checked were magnetic.

Re: Are MH fixtures nonlinear loads? #84814
05/09/03 12:35 AM
05/09/03 12:35 AM
frenchelectrican  Offline
Joined: Feb 2003
Posts: 939
Wi/ Paris France { France for ...
hey engy all magataic and electronic ballast do make non liner load so no matter what type the ballast it will make that effect and cant expect to be better than magatic ballast if you read the volts and current ratio it is not the same as indscent or liner loads are and some ballast manufacter will put it in called ballast factor it is hard for me to explain that meaning but scott35 or other members can make a chart to show how it can affect it

merci marc

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


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