FAQ's (Frequently Asked Questions)

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Q: How do I gage the severity of my electrical problems that are found during my infrared inspection?  I have had 3 different IR consulting companies do my inspection over the last few years and they all have different temperature severity scales.

A: There are about as many different temperature scales for determining the severity of problems as there are IR companies.  Some companies will measure the temperature of a problem condition and provide you with the "maximum" temperature of the component as it was found and a "Delta T" difference between either a "Reference Phase" or use "Ambient" as a reference.  In which ever case it is they should at least specify what they are using as the reference (although many do not).


Example 1

92 C Greater

165 F Greater

Critical, Repair immediately (overtime) replace component, inspect surrounding components. Repair while IR camera is still available to inspect after.

50 C to 92 C

90 F to 165 F

Serious, Repair immediate future (1-2 days). Replace component and inspect the surrounding components for probable damage.

25 C to 50 C

45 F to 90 F

Intermediate, Repair in the near future (1-4 weeks). Watch load and change accordingly. Inspect for physical damage. There is probability of damage in the component, but not in surrounding components.

0.55 C to 25 C

1 F to 45 F

Minor, Repair in regular maintenance schedule little probability of physical damage.

Example 2

83 C Greater

150 F Greater

Extremely Critical

66 C to 83 C

120 F to 150

Very Critical

52 C to 66 C

95 F to 120 F


0 C to 52 C

0 F to 95 F


Example 3

16 C Greater

28 F Greater

Major deficiency; repair immediately

4 C to 15 C

7.2 F to 27 F

deficiently; repair as time permits

1 C to 3 C

0.55 F to 5.4 F

Possible deficiency and warrant investigation






Training FAQ's