The Electrical Contractor Network

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

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!


2017 NEC and Related
2017 NEC
Now Available!

Recent Posts
Parking lot pole light swap....
by gfretwell
10/24/16 08:46 PM
International Wire Colour Codes
by Tjia1981
10/23/16 12:08 PM
Son of Sparky
by HotLine1
10/20/16 07:43 PM
Speaking of Plugmold ...
by gfretwell
10/17/16 02:37 PM
Broken battery charger? Check for cobwebs!
by gfretwell
10/17/16 02:30 PM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 14
HotLine1 7
ghost307 7
renosteinke 6
Potseal 4
Who's Online
0 registered (), 321 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#55254 - 08/23/05 04:47 AM Photo eye
tonyc Offline

Registered: 09/27/02
Posts: 18
Loc: Chesapeake, Va
Working on some parking lot lights I had a photo eye rated for 2000 watts wired to control a lighting contactor but for some reason when the contactor tries to pull in it chatters real bad. I have had multiple photo eye failures I have no clue anybody with an idea as to why. Other than that I am looking for a heavy duty timer that compensates for daylight savings time to put in place of the photo eyes any suggestions.

Work Gear for Electricians and the Trades

Work Gear for Electricians and the Trades
Work Gear for Electricians and the Trades
Arc Flash Clothing, Gloves, KneePads, Tool Belts, Pouches, Tool Carriers, etc. etc....

#55255 - 08/23/05 06:36 AM Re: Photo eye
gideonr Offline

Registered: 12/18/04
Posts: 152
Loc: Edinburgh, Scotland, UK
Could this be the photo eye is meant for resistive loads, but the lighting contactor is essentially inductive? Internally the photo eye may have a zero-crossing triac driver, which is suitable for resistive loads, but you would need one with all-angle triac drive or just relay contacts. Tried another type or brand of photo eye?

Another possibility could be line volts droop when contactor pulls in affecting the photo eye?

[This message has been edited by gideonr (edited 08-23-2005).]

#55256 - 08/23/05 07:21 AM Re: Photo eye
Dnkldorf Offline

Registered: 12/12/04
Posts: 1091
Loc: nowhere usa
Tony, is this a new installation, or exsiting situation and now you found the relay chattering?

Need to know this.



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