You scan a control panel and find a fuse block that is glowing bright white on the IR camera (extremely hot). The wire leaving the fuse block is cool. The other two phases are normal temperature. What is the issue?
Answers
AThe fuse is undersized for the application
BThe wire insulation is melting and absorbing the heat
CThe fuse clips have lost tension, creating high contact resistance at the fuse ferrule
DThe load on that phase is three times higher than the others
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