Erratic Outdoor Light


  #1  
Old 07-17-08, 04:49 AM
H
Member
Thread Starter
Join Date: Apr 2007
Location: Virginia
Posts: 51
Upvotes: 0
Received 0 Upvotes on 0 Posts
Erratic Outdoor Light

The light on my light post stopped working one day. It's about 15 y/o, one of the glass lenses is cracked so moisture/rain can penetrate at the fixture. I just assumed i would replace the fixture and be back in business.

Every night a try it to see if it'll work and sure enough last night it did.

How can i tell if the issue is the light fixture or the wiring from the switch to the light which of course is underground.

I was thinking of checking for continuity w/ my multi-meter by disconnecting the wiring at the switch and checking from the ground wire to each leg of the wire,i.e. ground to black check for resistance, and ground to white.
 
  #2  
Old 07-17-08, 03:37 PM
chandler's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Dec 2005
Location: USA
Posts: 36,608
Upvotes: 0
Received 9 Upvotes on 8 Posts
I'm a little slow, so bear with me. You say you may replace the fixture. You tried the fixture and it worked. If it ain't broke how will you fix it?
 
  #3  
Old 07-18-08, 07:25 AM
H
Member
Thread Starter
Join Date: Apr 2007
Location: Virginia
Posts: 51
Upvotes: 0
Received 0 Upvotes on 0 Posts
I'm looking for consistent operations of the light. Currently I do not have that.

I've been in the house 2 months. The light has worked about 65% of that time.

Since the light operates from a single wall switch and the bulbs are good, and i know how to operate a light switch, I must have a problem with either the switch, romex cable, or fixture.
 
  #4  
Old 07-18-08, 07:46 AM
J
Member
Join Date: Sep 2000
Location: United States
Posts: 17,733
Upvotes: 0
Received 1 Upvote on 1 Post
So there's no electric eye photocell or motion sensor on this fixture?
 
  #5  
Old 07-18-08, 08:45 AM
H
Member
Thread Starter
Join Date: Apr 2007
Location: Virginia
Posts: 51
Upvotes: 0
Received 0 Upvotes on 0 Posts
No photo-cell, fixture is lit directly off the switch position.
 
  #6  
Old 07-18-08, 11:28 AM
J
Member
Join Date: Sep 2000
Location: United States
Posts: 17,733
Upvotes: 0
Received 1 Upvote on 1 Post
Okay, I'd agree with your assessment that you must have a problem with the switch, the cable or the fixture. It's time to narrow it down, and that's probably best done by replacing them one at a time. The switch is the cheapest and easiest place to start.

You might also not be getting good contact between the bulb and the socket. So, with the circuit breaker off, remove the bulb and gently pry up the tab on the bottom of the socket. You might also try to seal up that leak, maybe just with duct tape to start with.
 
  #7  
Old 07-18-08, 02:02 PM
H
Member
Thread Starter
Join Date: Apr 2007
Location: Virginia
Posts: 51
Upvotes: 0
Received 0 Upvotes on 0 Posts
i sealed the lens with clear silicone. the fixture has 3 bulbs - so when its malfunctioning, every bulb is out.

thoughts on testing the u/g romex cable???
 
  #8  
Old 07-18-08, 02:59 PM
chandler's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Dec 2005
Location: USA
Posts: 36,608
Upvotes: 0
Received 9 Upvotes on 8 Posts
Do the switch first, then let us know the results. Testing the romex can be complicated, and my bet is on the swtich, or the wiring at the switch or light, not in the continuous run.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: