"Richard Casady" wrote
Mine is a digital with a ten amp fuse on the Amp function. Fluke 87 as
a matter of fact. All the professional heating and cooling guys, and
the appliance repairman, seem to have one like it.

That's well and good, but an ammeter with a 10A fuse may not be very helpful
in a circuit that's tripping a 15A breaker. I think I'd start by removing
all the power and using the 87's ohm meter function.