On the final inspection of a Trane 14 Li Air Conditioner, the city
inspector noticed 2 25 Amp fuses instead of the rated 30 Amp. I knew the
contractors were coming for another issue so I assured him that I would
have the correct fuses installed. He signed off the permit to save a
trip back. The installer says the rating is 20 to 30 amps and a 25 amp
is fine. Who is correct?
"instead of the rated 30 Amp" where? the size of the disconnect or the
nameplate on the unit?
Overcurrent devices/wire should be sized to the equipment, per the
manufactures recommendations and length of run. Somewhere on the name plate
of the equipment it will say,,,,, "maximum fuse size" as well as minimum
circuit capacity. Look in your paper work and you will find the right size.
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