AC/DC circuit breakers?

[MrForbes]

I'm kind of reading between the lines, but I think he was wondering if he even needed to bother with a circuit breaker/fuse, since he's using D batteries, which probably can't even produce 10 amps.

[PAR_WIG1350]

Originally Posted by squirrel

I'm kind of reading between the lines, but I think he was wondering if he even needed to bother with a circuit breaker/fuse, since he's using D batteries, which probably can't even produce 10 amps.

Yes, that is the point of my last post. D batteries can theoretically/hypothetically produce 10 amps of current, but if they do, they won't last long. The motors originally ran on 4 AA batteries so I don't need any more current.

[MrForbes]

You probably ought to still use a fuse in the circuit, I've seen smoke caused by relatively small batteries!

[PAR_WIG1350]

Originally Posted by squirrel

You probably ought to still use a fuse in the circuit, I've seen smoke caused by relatively small batteries!

What size?

on the topic of circuit breakers:
Generally speaking, should you buy a breaker rated for the current the system is rated for, or that trips at or before that current? (trip amps vs. rated amps)

[MrForbes]

Breakers or fuses are usually sized to the wiring (at least they are in power distribution systems used in houses, cars, and FRC robots).

But you also don't want it to pop at any normal working loads.

As I said earlier, 18 gage wire and 10 amp fuse/breaker should be fine for your application.