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#123047 - 02/26/06 09:35 PM Unfused Streetlighting  
electure  Offline


Member
Joined: Dec 2000
Posts: 4,260
Fullerton, CA USA
Quote
These are just a few pictures of a recent incident with a streetlight connected directly to the street buss with no fusing....The photoswitch burned up in the glove of the lineman as soon as he plugged it in.


Rewired (Adam Derus)


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[This message has been edited by electure (edited 02-26-2006).]


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#123048 - 02/27/06 12:23 AM Re: Unfused Streetlighting  
Radar  Offline
Member
Joined: Apr 2004
Posts: 349
Los Angeles, CA
Wowzers, Adam. Don't think we can save that one!


There are 10 types of people. Those who know binary, and those who don't.

#123049 - 02/27/06 12:36 AM Re: Unfused Streetlighting  
Hemingray  Offline
Member
Joined: Apr 2005
Posts: 199
Lehigh Acres, FL
short in the ballast?


Cliff

#123050 - 02/27/06 12:53 AM Re: Unfused Streetlighting  
wa2ise  Offline
Member
Joined: Nov 2002
Posts: 782
Oradell NJ USA
Incorrect photoswitch? Maybe the internal connections didn't match the old one, and this one had its switch contacts short the line?


#123051 - 02/27/06 05:31 AM Re: Unfused Streetlighting  
RODALCO  Offline
Member
Joined: Dec 2005
Posts: 854
Titirangi, Akld, New Zealand
It looks like that the new terminations were different here to me and I have to agree with Wa2ise.

I had a similar incident in the Hobsonville substation, when replacing a faulty S.L. lightcell on the roof, for the area streetlighting, where the sun had faded the control wire colours and I got brown and black wires transposed.

Luckily it blew only a 6 Amp HRC fuse in the control panel.

I did mark the control wires with Grafoplast coding afterwards to avoid future wiring errors, and fitted the terminations in a watertight enclosure.


The product of rotation, excitation and flux produces electricty.

#123052 - 02/27/06 07:08 PM Re: Unfused Streetlighting  
Rewired  Offline
Member
Joined: Jan 2006
Posts: 558
Hamilton, Ontario, Canada
Actually I do not know what the problem was, I DO "own" the fixture now so I will look into it tonight.. All the photo switches are the "same" or at least should be as for pin configuration and designation.. My boss thought possibly the guts of the photo eye were messed up or the photo eye receptacle had a problem.. I did have a quick look at the ballast and nothing seems wrong, but I will give it a good going over and report back tomorrow after I get in from work.

A.D


#123053 - 02/27/06 09:04 PM Re: Unfused Streetlighting  
HighPotter  Offline
Member
Joined: Aug 2004
Posts: 42
So. Cal
It took a line surge, lightning, or strong static/wind. I've seen that done to many pc in the desert southwest.

HP


#123054 - 02/28/06 08:00 PM Re: Unfused Streetlighting  
Rewired  Offline
Member
Joined: Jan 2006
Posts: 558
Hamilton, Ontario, Canada
Wa2ise and RODALCO were correct... I looked at the mess lastnight... I did not find anything wrong with the ballast, it looks pristine.. I did notice the neutral wire burned off the back of the photoeye receptacle so it had to have been the "return path" for the fault... The receptacle even though incinerated to a crisp, it was "intact" to where nothing shorted out in the receptacle between terminals, so the problem must have been a defective photoeye... Thats what I am guessing anyway..

A.D

[This message has been edited by Rewired (edited 02-28-2006).]

[This message has been edited by Rewired (edited 02-28-2006).]



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