ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

Topic Options
Rate This Topic
#84809 - 05/07/03 08:25 AM Are MH fixtures nonlinear loads?
steve66 Offline
Member
Registered: 03/13/03
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).

Steve
Top
2017 / 2014 NEC & Related Books and Study Guides
#84810 - 05/07/03 09:30 AM Re: Are MH fixtures nonlinear loads?
Bjarney Offline
Moderator
Registered: 04/10/02
Posts: 2527
Loc: West-Southern Inner-Northeast ...
Yes it is, as is discharge lighting in general.
Top
#84811 - 05/07/03 07:43 PM Re: Are MH fixtures nonlinear loads?
golf junkie Offline
Member
Registered: 04/22/01
Posts: 507
Loc: York, NE
Yes
Top
#84812 - 05/08/03 08:51 AM Re: Are MH fixtures nonlinear loads?
steve66 Offline
Member
Registered: 03/13/03
Posts: 25
thanks.
Top
#84813 - 05/08/03 10:09 AM Re: Are MH fixtures nonlinear loads?
engy Offline
Member
Registered: 06/25/02
Posts: 15
Loc: Minnesota
Dare I say No?

Are these electronic ballasts?

The cuts I just checked were magnetic.
Top
#84814 - 05/08/03 10:35 PM Re: Are MH fixtures nonlinear loads?
frenchelectrican Offline
Member
Registered: 02/06/03
Posts: 939
Loc: 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?)

Top

Member Spotlight
Member Since: 11/17/00
Posts: 2232
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
0 registered (), 51 Guests and 11 Spiders online.
Key: Admin, Global Mod, Mod
 
New in the Gallery:
SE cable question
 
Top Posters (30 Days)
Admin 49
HotLine1 43
gfretwell 18
Ruben Rocha 12
Trumpy 9
 
Newest Members
Freecrowder, clee512, Jdscott2005, FAIZAN, Regitest2

ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals