Fuse Size Chart (Amperage Guide)
Fuse Size Chart (Amperage Guide)
A single fuse chart cannot assign safe ratings to every appliance or wire gauge. Use the charts below as an identification and calculation aid, then check the exact equipment and installation.
Common small automotive blade colors
Color conventions may differ across families; read the number and verify the shape.
Current estimates, not fuse prescriptions
No universal AWG-to-fuse table: conductor ampacity changes with copper/aluminum, insulation, temperature, grouping, length, terminals and installation rules. Determine allowable conductor current and voltage drop for the actual run. Choose a fuse with a suitable time-current curve, AC/DC voltage rating and interrupt capacity that protects the smallest conductor and follows the equipment maker’s instructions. Never select an internal microwave fuse from a “1000 W” cooking-output label.