Electric Fan Fuse Size

The important part to keep in mind is how much current your fan system will draw.

Electric fan fuse size.

12 awg wire is marginal for a 20 amp circuit that will draw 20 amps. Shoot for good quality 40 amp version not the cheap 20 amp as shown in the picture. If the fans draw a total of 20 amps i would probably fuse them at 25 with a slow blow fuse. If you are using 2 fans watching the fuse size relay and wiring capacity is even more important.

If you want to put all of these on a single circuit you ll need to know the current. The brown wire to pin 86 is the one i need help with on fuse size. You either need the constant 12 volt power to be run through a circuit breaker or a fuse. As you can see from the diagrams above and below it s really a simple circuit that not only provides the proper connections to control the cooling fans but unlike the switch under the dash method you won t ever have to worry about forgetting to turn the fans on.

Go vertically to the head of that column for the recommended wire size. Add it all up. 700 2 80 5 80 1 1880ma in total. Here is a picture of the wiring diagram the circuit breaker i believe is a 35 amp.

Based on the table above each transformer draws 700ma each superflux led draws 80ma and the led strip draws 80ma. Although 12 gauge will carry 20 amps you should not exceed 75 of a wires capacity for extended period of time so for fans that will draw a constant 20 amps you should use 10 awg stranded copper wire. A single 10 inch fan can draw anywhere from 5 20amps. Select motor size from horsepower column making certain you are in the correct voltage.

In the painless performance electric fan relay kit we got from speedway motors a circuit breaker is. Each relay will control a single fan and a 30 amp fuse is recommended for each relay connection to the battery. Once the key has been turned to the on position but for it to get power it needs a fuse plugged in but i would have no idea what amperage fuse to use. Thanks for any offered help.