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ELECTRICAL / MECHANICAL
FUSE CLIPS are vulnerable to failure because
they depend on spring tension for their electrica
l
integrity. Even heating a clip to as little as 200°F
for a month causes it to lose that spring tension,
resulting in a trend toward rapid declining failure.
CENTER PHASE load side of this heater overload
block is too warm! It could be a loose connection 
at either the heater or the conductor just below.
With infrared thermography you cannot predict the
exact time until failure. But one thing is sure - this
connection is headed toward failure.
PANEL CIRCUIT BREAKER is hot! Is it a problem?
Without a load reading, diagnosis is difficult. This
may be the only energized breaker in the entire
panel.
- "B" PHASE of this breaker appears to have a poor connection. This "connection type pattern" is one of the two classic patterns typically seen during electrical inspections. It can be diagnosed as a
connection pattern because as you move away from the connection, which is the hottest point (partially obscured by the breaker), the heat dissipates. Further away from the point of high
resistance the conductor is the same
approximate temperature as the other two phases.