I have a 4-circuit subpanel with twist-in type fuses branching off a 40-amp breaker in the main house panel.
A living room circuit that I'm working has 6 duplex receptacles. As I was pigtailing some wire to the old flex armored BX cable I noticed that the original wire gauge seemed heavy. I looked at the fuse that I had removed and it's rated for 30-amps. The old receptacles that I took out were standard 15-amp.
My question is, does it make sense to replace the fuse with a 15-amp fuse then safely pigtail with 14-gauge wire using standard duplex receptacles??
Part two of the question is this... there is another 30-amp fuse in the subpanel used for a bathroom circuit. The other two circuits have 20-amp fuses - they're used for misc. lighting. Does it sound like all of these fuses are over-rated? Should I just replace all with 15-amp fuses??
Thanks for any guidance.