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one major distinction between fuses and circuit breakers. circuit breakers are mechanical devices that can sometimes stick and fail to trip. with a fuse, by design, that can't happen. breakers are common in modern houses but as long as connections are good and protection from touch is not an issue, they are arguably more safe.
often even in modern machinery with modern breakers there are still fuses used for this reason.
the wiring in your walls needs to be heavy enough to be able to trip the fuse without melting down. sometimes people don't know that and install too large of a breaker and that's an issue. Any appliance will specify the fuse rating, it will have an appropriate plug if not changed and that configuration is specific to the voltage and amp rating. dont exceed it. there is nothing to gain but a fire. you can safely reduce the fuse just dont increase one without knowing if the wires in the walls are rated high enough to support it. if you have 40 amp fuses where you should have 30 I'd fix that.
my house was all old 1924 knob and tube, I replaced everything myself under permit, and installed a larger panel. Now I can heat with electric if I want to. in some areas you need an electrician but I was able to do it under a homeowners permit. a lot of the parts I admired but removed them from service anyway.
Last edited by Monkey Wrench; 02-14-2023 at 10:53 AM..
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