IR scan

mannyb

Senior Member
Location
Florida
Occupation
Electrician
I have used a laser thermometer to check temp breakers to check amvmbient temp for breakers/equipment. I have been sucessful in the past but wanted to try this next IR scan device. The IR camera and Laser are is pretty close to each others temperature. My questlion is when using the devices. How much variance in temperature should one be looking for? If most of my breakers read 88degrees and 1 of the breakers read 110 degress is it safe to say theres a problem? In previous experience I have had YES but the camera makes me doubt. I always read ambient temperature of surrounding equipment and compare reading before making the decision. Any one share advice using camera....and dont get me started on the heat from sun. This does affect scan.
 
If most of my breakers read 88degrees and 1 of the breakers read 110 degress is it safe to say theres a problem
Only if the loading on the breakers is equal.
How do you know the lower temps breakers aren't only 25% loaded and the higher one is at 60%?

I believe the handle of the breaker will generally be the hottest part (partly because it surrounded by heat sources). I would be concerned if the lug and bus connections are hotter than the handle area.
 
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Only if the loading on the breakers is equal.
How do you know the lower temps breakers aren't only 25% loaded and the higher one is at 60%?

I believe the handle of the breaker will generally be the hottest part (partly because it surrounded by heat sources). I would be concerned if the lug and bus connections are hotter than the handle area.
I agree. The buss does read higher and vary from 15- to above 20degrees higher from one breaker to another in hot spots.
 
Have you taken any IR training or have you received any IR certifications? Since you're asking for advice I would recommend that you start there. Using IR devices can be complicated. Just my 2 cents but without proper training you run the risk of getting yourself into trouble by reporting things that may or may not be an issue.
 
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