# Question: How Do I Choose A Fuse Size?

## What size fuse should I use for LED lights?

75mm is good for about 7.5 amps max.

I generally like to have at least 100% extra rating so a 3 amp fuse max is what i would use.

This should be plenty for 4 leds.

If you have working leds but blow a 10A fuse i think your wiring needs checking and you will probably find your fuse is directly across the battery..

## How many watts can a 5 amp fuse take?

1150 WattsIf your lighting circuit at home is protected by a typical 5 amp fuse you can multiply this by the voltage to get 1150 Watts.

## How do I know what size fuse to use?

Fuse rating = (watts/volts) x 1.25Note the power of the appliance – usually in the appliance manual,Note the voltage (240 volts in the UK).Use the next highest fuse rating after the calculation. Say the calculated fuse rating is 2.2679 amps, use a 3 amp fuse.

## How do I choose the right fuse?

How to Choose the Right FuseIdentify the type of voltage that is being protected. … Observe the amperage of the electrical circuit that the fuse will be protecting. … Size the fuse to its particular holder. … Inspect the fuse for internal element replacement. … Use a fuse that has an inspection window.

## What are the sizes of fuses?

Size groupsBlade sizeBlade groupCommon ratings (maximum current)LP-MiniAPS, ATT2, 3, 4, 5, 7.5, 10, 15, 20, 25, 30MiniAPM, ATM2, 3, 4, 5, 7.5, 10, 15, 20, 25, 30RegularAPR, ATC, ATO, ATS0.5, 1, 2, 3, 4, 5, 7.5, 10, 15, 20, 25, 30, 35, 40MaxiAPX20, 25, 30, 35, 40, 50, 60, 70, 80, 100, 1202 more rows