Fuse and breaker sizing

RV Fuse and Breaker Size by Circuit Current

Pick the circuit current. Each page gives the fuse size for continuous and non-continuous loads, the conductor it requires, which fuse body type belongs there and where to mount it.

13 pages in this section.

10 amp circuit

A 10 amp continuous load needs a 15 amp fuse, sized at 125 percent and rounded up to the next standard rating, on a conductor rate
15 amp circuit

A 15 amp continuous load needs a 20 amp fuse, sized at 125 percent and rounded up to the next standard rating, on a conductor rate
20 amp circuit

A 20 amp continuous load needs a 25 amp fuse, sized at 125 percent and rounded up to the next standard rating, on a conductor rate
25 amp circuit

A 25 amp continuous load needs a 35 amp fuse, sized at 125 percent and rounded up to the next standard rating, on a conductor rate
30 amp circuit

A 30 amp continuous load needs a 40 amp fuse, sized at 125 percent and rounded up to the next standard rating, on a conductor rate
40 amp circuit

A 40 amp continuous load needs a 50 amp fuse, sized at 125 percent and rounded up to the next standard rating, on a conductor rate
50 amp circuit

A 50 amp continuous load needs a 70 amp fuse, sized at 125 percent and rounded up to the next standard rating, on a conductor rate
60 amp circuit

A 60 amp continuous load needs a 80 amp fuse, sized at 125 percent and rounded up to the next standard rating, on a conductor rate
80 amp circuit

A 80 amp continuous load needs a 100 amp fuse, sized at 125 percent and rounded up to the next standard rating, on a conductor rat
100 amp circuit

A 100 amp continuous load needs a 125 amp fuse, sized at 125 percent and rounded up to the next standard rating, on a conductor ra
125 amp circuit

A 125 amp continuous load needs a 175 amp fuse, sized at 125 percent and rounded up to the next standard rating, on a conductor ra
150 amp circuit

A 150 amp continuous load needs a 200 amp fuse, sized at 125 percent and rounded up to the next standard rating, on a conductor ra
200 amp circuit

A 200 amp continuous load needs a 250 amp fuse, sized at 125 percent and rounded up to the next standard rating, on a conductor ra