Re: Breaker vs Fuse
Two different things. A fuse is a "use once and replace" device; if it blows you have to get a new one. The breaker is a thermally (or electromagnetic) controlled switch: too much current causes it to shut off. You can reset it and be back in business over and over. Of course if you do you'd better look around to find out what's causing the repeated trips: that's not supposed to happen.
Originally Posted by rgk1
Current through a fuse or a breaker is the same on in as out, so long as contact is made. They are not directional, per se, although some breakers have a "preference" due to internal design factors.
For the most part they are interchangeable, so long as the device in question meets the specifications for the circuit. That means Voltage (maximum it's safe to interrupt), current (peak it can carry), and AC or DC rating. The DC rating is very important as it is more difficult to interrupt DC current flow.
Four 175 Watt panels, OB MX60, 232 Amp hrs, OB 3524, Honda eu2000.
Ohm's Law: Amps = Volts / Ohms
Power Formula: Watts = Volts * Amps