Compressor Causes LED Troffer Flicker - Electrician Talk - Professional Electrical Contractors Forum
CLICK HERE AND JOIN OUR COMMUNITY TODAY, IT'S FREE!
Go Back   Electrician Talk - Professional Electrical Contractors Forum > Electrical Trade Topics > Commercial Electrical Forum


Like Tree1Likes
  • 1 Post By Kevin_Essiambre
Reply
 
Thread Tools Display Modes
Old 04-25-2019, 10:23 AM   #1
Swimmer
 
swimmer's Avatar
 
Join Date: Mar 2011
Location: California
Posts: 653
Rewards Points: 652
Default Compressor Causes LED Troffer Flicker

I replaced 10 2X2 Fluorescent troffers with LED troffers. The LED troffers flicker while the compressor is running.
Details:

1. Flickering occurs during the entire time the compressor is running which may be a duration of 10 minutes.

2. I measured voltage drop at a fixture when the compressor was off and again while it was on. On: 119V. Off 115V

3. Spec on LED troffers says 110V -277V

4. Connected a Variac to one LED fixture and dialed down to 100V. No flicker

5. Customer said flurorescents used to flicker. There was a combination of magnetic and electronic and I'm not sure which were or were not flickering.

6. New LED troffers have 0-10V dimming but this feature is not connected.

7. Compressor and lighting circuit both come from a 208V 3-phase panel. The compressor takes 2 of these legs with a dedicated circuit. The lights share a leg - not a circuit - with the compressor. The lights are on a dedicated circuit.
__________________
Elvis is in the building
swimmer is offline   Reply With Quote
Join Contractor Talk

Join the #1 Electrician Forum Today - It's Totally Free!

ElectricianTalk.com - Are you a Professional Electrical Contractor? If so we invite you to join our community and see what it has to offer. Our site is specifically designed for you and it's the leading place for electricians to meet online. No homeowners asking DIY questions. Just fellow tradesmen who enjoy talking about their business, their trade, and anything else that comes up. No matter what your specialty is you'll find that ElectricianTalk.com is a great community to join. Best of all it's totally free!

Join ElectricianTalk.com - Click Here JOIN FOR FREE


Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. ElectricianTalk.com DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!

Sponsored Links
Advertisement
 
Old 04-25-2019, 10:55 AM   #2
Senior Member
 
MikeFL's Avatar
 
Join Date: Apr 2016
Location: The Sunshine State
Posts: 5,451
Rewards Points: 2,998
Default

Can you put the lights on the leg which does not feed the compressor?

How "loaded" is the service?

Did you check all the connections in the lighting circuit back to the panel?
__________________
Michael Gookin, President
GPS Timers

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

(833) GPS-TIME
MikeFL is offline   Reply With Quote
Old 04-25-2019, 06:15 PM   #3
:-)
 
daveEM's Avatar
 
Join Date: Nov 2012
Location: Alberta
Posts: 3,670
Rewards Points: 2,382
Default

Quote:
Originally Posted by swimmer View Post
The lights share a leg - not a circuit - with the compressor. The lights are on a dedicated circuit.
I'm not understanding that.
__________________
<<
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


I like perfect.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
daveEM is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 04-25-2019, 06:19 PM   #4
Beam Me Up Scotty
 
Kevin_Essiambre's Avatar
 
Join Date: Feb 2017
Location: Ottawa, Ontario, Canada
Posts: 834
Rewards Points: 164
Default

Quote:
Originally Posted by daveEM View Post
I'm not understanding that.
He means that the compressor is on A & B phase, and the lights are also on either A or B phase.

Sent from my Samsung using Tapatalk
daveEM likes this.
__________________
"If the women don't find you handsome, they should at least find you handy!"
Kevin_Essiambre is offline   Reply With Quote
The Following User Says Thank You to Kevin_Essiambre For This Useful Post:
swimmer (04-25-2019)
Old 04-25-2019, 06:56 PM   #5
Swimmer
 
swimmer's Avatar
 
Join Date: Mar 2011
Location: California
Posts: 653
Rewards Points: 652
Default

Quote:
Originally Posted by MikeFL View Post
Can you put the lights on the leg which does not feed the compressor?

How "loaded" is the service?

Did you check all the connections in the lighting circuit back to the panel?
Problem occurs when nothing is running except a few computers. Also occurs when portable power tools are run. There was no heavy electrical equipment running while I was on site though I'm sure the customer has jobs that require it.

I'll change the legs the next time I go there
__________________
Elvis is in the building
swimmer is offline   Reply With Quote
Old 04-25-2019, 08:01 PM   #6
Beam Me Up Scotty
 
Kevin_Essiambre's Avatar
 
Join Date: Feb 2017
Location: Ottawa, Ontario, Canada
Posts: 834
Rewards Points: 164
Default

Quote:
Originally Posted by swimmer View Post
Problem occurs when nothing is running except a few computers. Also occurs when portable power tools are run. There was no heavy electrical equipment running while I was on site though I'm sure the customer has jobs that require it.



I'll change the legs the next time I go there
Be careful just changing the leg that feeds the lights. If there's a common neutral on 3 circuits, you could end up overloading the neutral. You *might* have to move 3 breakers.

Sent from my Samsung using Tapatalk
__________________
"If the women don't find you handsome, they should at least find you handy!"
Kevin_Essiambre is offline   Reply With Quote
Reply

Tags
flicker, led, led troffer flicker, troffer

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Building wide LED a19 flicker bjt809 Commercial Electrical Forum 15 04-08-2019 03:31 PM
Lights flicker when air compressor runs John M. General Electrical Discussion 15 08-12-2018 01:30 PM
Troffer in residential ceilings Hangry Canadian Electrical Forum 18 03-15-2018 11:01 PM
Frequency Interference Causing Lights to Flicker Vevolicious New Member Introductions 6 07-29-2017 02:49 PM
Lights Flicker when initial power the disposal crum2243 Residential Electrical Forum 1 09-20-2016 02:22 AM


All times are GMT -4. The time now is 08:55 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Our Pro Sites Network
ContractorTalk.com | DrywallTalk.com | HVACSite.com | PaintTalk.com | PlumbingZone.com | RoofingTalk.com