Infrared anomaly

Hey all, new here on the forum. I ran into this and I have never witnessed this before. Using my infrared camera I was able to see the wiring behind the wall of one bedroom. Imaging other portions of the house the wiring was not visible. The bedroom did have a Gaming computer hooked up but the outlet that it was plugged into was not illuminated like the wall on the opposite side. I upload the images for your viewing. Any thoughts on this? I did mark it as a material defect and recommend a Licensed Electrician for further eval.
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What Flir equipment are you using?

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I am using a Flir E4.

Looks like a lighting circuit coming off a stud.
Is there a bathroom or laundryroom on the other side of the wall. Did you just run the water supply in that room?
Need more clarity. 80 x 60 (4800 pixels) at <150 mK.

There was a bathroom on the other side but the fixtures were on the opposite wall, so assuming supply lines and drains would be over there. I’ll make those adjustments on the camera, thanks.

Those are the IR Camera specs, Matthew. I do not know if level and span can be adjusted on the Flir E4.
Here is the Flir E4 manual.

Are the wires hotter due to gaming equipment and thats why they are showing?

So we are looking at the wall that does not have the gaming computer involved? Are both of your pictures looking at the same thing just from different distances? It doesn’t really seem like it as the wiring pattern is different.

Your bottom picture looks like a lighting circuit. Might be warmer based on what type of lighting it was feeding. Doesn’t look overly warm though. Just because you can see it, doesn’t mean it is getting too hot.

Anyway, not really enough info here to help investigate this from a distance, in my opinion.



Wires have resistance so they get warm when current flows through them. If we take what the thermal image is indicating at face value we are looking at an uninsulated interior wall that has a surface temperature at about 72 to 74 degrees and slightly warmer areas at around 75 to 78 degrees where it logical there is wiring. If there is a legitimate reason for current to be flowing through those wires (what does that switch control and what is plugged into that outlet, for example), there is really nothing to see here, other than interesting that it showed up on the thermal camera so nicely.


85°F wire was written up as a material defect :roll_eyes:


That is almost certainly going to cause you to lose future business. :man_facepalming:t3:


If you felt this was a concern, rather than marking this anomaly as a material defect, just note the anomaly as a concern in need of further evaluation. Your interpretation of the image does not contain the quantitative information needed to be conclusive.

I would have moved closer to fill the spot circle completely with the anomaly to get a more accurate temp. You still might be able to accomplish this with the Flir software by manually moving the spot. I would give it a try.


The thing is, there is no anomaly, and nothing to evaluate. Any circuit under a load, even a small load, will dissipate heat. That’s why there are different wire gauges and insulations.


More anomaly!

Turns out the basic rom (U3) is a low power CMOS replacement. U17 (PLA) was the culprit (bus contention).

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Oh! This isn’t 8BitWorld! Nevermind.

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