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!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Sprinklered equipment 26-008
by bigpapa
Yesterday at 04:24 PM
On Delay Relay with Auto Reset
by Potseal
12/01/16 09:59 AM
Wow, that was close!
by jraef
11/28/16 07:06 PM
Earthquake in New Zeeland
by RODALCO
11/27/16 11:25 PM
Calling all Non-US members!! (Non-US only)
by Tjia1981
11/27/16 06:33 AM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 15
HotLine1 10
Trumpy 8
Texas_Ranger 8
sparkyinak 7
Who's Online
0 registered (), 223 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#49600 - 03/10/05 03:46 PM Photocell twistlocks
Dnkldorf Offline
Member

Registered: 12/12/04
Posts: 1091
Loc: nowhere usa
Looking for some info on the twist lock photo cells for street lighting.

What is the trick to these?
Other than the multi-voltage, and the wattage for them, I can't seem to get some of them to just twist in, and operate properly.

The package says, you have to disconnect power before installing.

How do you guys do it?

Top
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....

#49601 - 03/10/05 03:57 PM Re: Photocell twistlocks
HotLine1 Offline

Member

Registered: 04/03/02
Posts: 6804
Loc: Brick, NJ USA
Never saw any that said "turn-off" as you say. Basically, just like a twistlock cord cap. No tricks that I have seen, nor have any of my men mentioned any problems.

This is not to say that there may be some non-standard (Non-NEMA) devices around, with all the 'junk' coming in from everywere.

John
_________________________
John

Top
#49602 - 03/10/05 04:02 PM Re: Photocell twistlocks
Celtic Offline
Member

Registered: 02/26/05
Posts: 367
Loc: NJ
If the PC is new, the gasket may be "thick" - some brute force (compacting the gasket) and a firm, but gentle twist usually gets it in w/o smashing it.
Pass the Wheaties !
_________________________
~~ CELTIC ~~
...-= NJ =-...

Top
#49603 - 03/10/05 05:42 PM Re: Photocell twistlocks
Dnkldorf Offline
Member

Registered: 12/12/04
Posts: 1091
Loc: nowhere usa
I went through 6 differnt photocells on one light.
2 different manufactures of them.

240 light 400w MV.

One manufacturer was intermatic, 120-305V rated 1000w. Freaking light wont shut off.
2nd was some cheapo, 208-277V 1000w. Same light wont shut off after installing them.

Everything is wired right, damn light won't go out. Intermatic paperwork says to disconnect power before installing. Tried everything.

Freaking ghosts messing with me, or bad batches of cells?

Top
#49604 - 03/10/05 05:47 PM Re: Photocell twistlocks
Celtic Offline
Member

Registered: 02/26/05
Posts: 367
Loc: NJ
It is always possible for a bad batch to get through QA control measures, but before I blame manufac. I would recheck my connections (including ballast taps) - then I would try again w/pc...I use the box it came in to block the light.
Another thought...wire the fixture straight through (no pc) and check that the bulb actually lights - so many things can go fubar from source to bulb: connections, capacitor, ignitor, etc.
_________________________
~~ CELTIC ~~
...-= NJ =-...

Top
#49605 - 03/10/05 08:14 PM Re: Photocell twistlocks
e57 Offline
Member

Registered: 05/27/03
Posts: 2837
Loc: S.F.,CA USA
Some of them will take awile to go out, like a few minutes. Some have clocks in them to delay off and on. But it sounds like hot and sw reversed.
_________________________
Mark Heller
"Well - I oughta....." -Jackie Gleason

Top
#49606 - 03/11/05 04:13 AM Re: Photocell twistlocks
dmattox Offline
Member

Registered: 10/20/04
Posts: 267
Loc: Anaheim, CA
You sure you dont have test versions? You can buy 2 types, one that is a photocell and the other is just a short so you can test the light or have it controlled from a different source. Counter guys are always screwing up and giving us the wrong type.

Top



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