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#59814 - 12/15/05 09:10 AM Lights flicker  
sandro2  Offline
Member
Joined: Mar 2005
Posts: 49
philadelphia,PA
I received a call of lights flickering at a restaurant when the dishwasher kicks on.
What are some things to look for.
I checked for loose neutrals,hots.
They are on different circuits


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#59815 - 12/15/05 09:34 AM Re: Lights flicker  
pauluk  Offline
Member
Joined: Aug 2001
Posts: 7,520
Norfolk, England
Flickering as in actually going on and off a time or two, or just a momentary dip in brightness?

If the latter then it might just be the normal momentary voltage drop on the feeder caused by the switch-on surge of the motor.


#59816 - 12/15/05 09:46 AM Re: Lights flicker  
sandro2  Offline
Member
Joined: Mar 2005
Posts: 49
philadelphia,PA
a momentary dip in brightness.


#59817 - 12/15/05 09:47 AM Re: Lights flicker  
sandro2  Offline
Member
Joined: Mar 2005
Posts: 49
philadelphia,PA
Is there any way to solve this. It looks really bad when you have many people in a restautant and the lites dim every so often.


#59818 - 12/15/05 10:19 AM Re: Lights flicker  
Dnkldorf  Offline
Member
Joined: Dec 2004
Posts: 1,064
nowhere usa
What type of lights, incandesant or fluro?

Dnk...


#59819 - 12/15/05 10:37 AM Re: Lights flicker  
sandro2  Offline
Member
Joined: Mar 2005
Posts: 49
philadelphia,PA
incadescent


#59820 - 12/15/05 01:01 PM Re: Lights flicker  
earlydean  Offline
Member
Joined: Dec 2003
Posts: 751
Griswold, CT, USA
Aside from moving the lights from phase A to phase B, or upgrading the service so that the dishwasher load won't appreciably effect the available voltage to the lights, or reducing the load to the lighting circuit by sharing the circuits, I guess the only thing is to reduce the draw on the dishwasher. Can the dishwasher be connected 240 volts? How about 3 phase?


Earl

#59821 - 12/15/05 01:09 PM Re: Lights flicker  
sandro2  Offline
Member
Joined: Mar 2005
Posts: 49
philadelphia,PA
The service is new. I guess I can try and see if the manufacture has a 240v model instead


#59822 - 12/15/05 10:36 PM Re: Lights flicker  
ShockMe77  Offline
Member
Joined: Jun 2005
Posts: 821
Rahway, New Jersey
I would check and see if both circuits were on the same phase. If they are on the same phase, put one of the two on a different phase. It's worked for me before. Good luck!


#59823 - 12/16/05 12:00 AM Re: Lights flicker  
sierra electrician  Offline
Member
Joined: Feb 2005
Posts: 219
North Fork, CA USA
If the PoCo Xfmr is shared, the loads at the neighbors house can cause the lights to flicker and dim. I the dwelling is at or near the end of the Poco ckt this can happen too. This may not be the problem but, you could be chasing ghosts.

Rob


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