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

Topic Options
Rate This Topic
#177080 - 04/21/08 04:32 PM T-5 white & grey wire
Redsy Offline
Member
Registered: 03/28/01
Posts: 2056
Loc: Bucks County PA
I've done T-5, 4-tube low-bays before and I seem to remember the white & grey ballast lead connected together at the factory with a push-in connector and a lead coming off to connect to the neutral of the supply

Is this correct?

I saw another brand that has black, white and gray, but they show the supply neutral connected to the white ballast lead, and also feeding a switch that connects the grey lead to the whites.

Is this just to switch 2 of the lamps separately?

If so, why is the switch loop in the neutral?

Thanks
Top
Work Gear for Electricians and the Trades
#177105 - 04/22/08 04:27 AM Re: T-5 white & grey wire [Re: Redsy]
Redsy Offline
Member
Registered: 03/28/01
Posts: 2056
Loc: Bucks County PA
42 views and no opinions?

I forgot to mention that it is a single ballast for 4 lamps.


Edited by Redsy (04/22/08 04:29 AM)
Top
#177107 - 04/22/08 05:14 AM Re: T-5 white & grey wire [Re: Redsy]
HotLine1 Offline


Member
Registered: 04/03/02
Posts: 6775
Loc: Brick, NJ USA
Redsy:
OK, I'm the 43rd view, but sorry to say I can't help you on this.
_________________________
John
Top
#177109 - 04/22/08 05:47 AM Re: T-5 white & grey wire [Re: HotLine1]
electure Offline


Member
Registered: 12/24/00
Posts: 4259
Loc: Fullerton, CA USA
#49 here......Redsy, do you know the manufacturer?

Top
#177120 - 04/22/08 11:34 AM Re: T-5 white & grey wire [Re: Redsy]
togol Offline
Member
Registered: 09/15/05
Posts: 421
Loc: NW In. USA
although have installed a bunch of them I never looked inside at the ballast(s) until recently these 4 light Stoncos use a three lamp and single lamp ballast, which makes switching inside/outside impossible... so I am no help

I just assumed the electronic ballasts had no color code standards

I was actually stunned at the replacement cost of the three lamp unit..>$90
_________________________
Tom
Top
#177123 - 04/22/08 01:54 PM Re: T-5 white & grey wire [Re: Redsy]
oletimer Offline
New Member
Registered: 03/25/07
Posts: 3
Loc: Delaware
I just finished installing several of these fixtures and the white and gray wire went to the neutral.I;m not sure why,but that's the only all 4 lamps would come on.
_________________________
Work Safe
Top
#177125 - 04/22/08 02:47 PM Re: T-5 white & grey wire [Re: oletimer]
Tom Offline
Member
Registered: 01/01/01
Posts: 1044
Loc: Shinnston, WV USA
Working from a rather feeble memory, if you connect the grey wire to the neutral (and possibly the hot) all 4 lamps will come on when power is applied to the fixture. The gray can be run through a motion sensor or other control device to provide dual level lighting.

Tom
_________________________
Few things are harder to put up with than the annoyance of a good example.
Top
#177126 - 04/22/08 02:51 PM Re: T-5 white & grey wire [Re: oletimer]
Rewired Offline
Member
Registered: 01/01/06
Posts: 558
Loc: Hamilton, Ontario, Canada
I have installed these fixtures before and yes it is to be able to switch 2 or 3 of the lamps independently.. WHY they choose to do this with the neutral puzzles me, but as far as I know and have read, this is the purpose of the grey wire.

I think perhaps it is intended for some sort of optional "occupancy sensing" system, where 1 or 2 out of 4 lights normally burn constantly but the remaining lamps are fired up when a person or object moves in the area below the fixture.

A.D
Top
#177139 - 04/22/08 09:36 PM Re: T-5 white & grey wire [Re: Redsy]
Redsy Offline
Member
Registered: 03/28/01
Posts: 2056
Loc: Bucks County PA
Thanks, Guys!!
Top

Member Spotlight
Member Since: 07/05/02
Posts: 8211
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
0 registered (), 44 Guests and 20 Spiders online.
Key: Admin, Global Mod, Mod
 
New in the Gallery:
SE cable question
 
Top Posters (30 Days)
Admin 51
HotLine1 43
gfretwell 17
Trumpy 16
Ruben Rocha 13
 
Newest Members
clee512, Jdscott2005, FAIZAN, Regitest2, sureshazhagai

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