Car Radiator Fan Amperage

The initial start up of the fan will have an amperage spike of up to 60 percent which lasts only a millisecond.

Car radiator fan amperage.

At idle and low engine speeds this fan clutch is fully engaged gradually disengaging as engine speed increases. A centrifugal valve opens to allow the flow of heavy silicone fluid locking the fan blades to the pulley. The one drawback to adding more electrical components to your vehicle is that often times the original alternator was not designed to handle current draws over 45 60 amps so as you add a single or dual electric cooling fan consideration should be made to increase the output of your charging system with a beefier alternator. If you plan to upgrade your engine it won t hurt to install a more powerful fan now you can control its airflow with a temperature sending unit.

Amperage used to measure how much load an electrical device draws when in operation. Using a 30 amp fuse. But 10 13 amps sounds about right. If you ve got an electric cooling fan on your classic car or hot rod and you want to know how to wire it with a relay you ve come to the right place.

Depending on the application it may freewheel above 2 500 to 3 000 rpm. My intrepid fans pulled right at 10 amps while running. If you are worried hook it up to a 10 amp fuse turn it on if it blows well you know the answer. Automotive fans are rated at 13 5 volts and the rating is after the motor is at operating rpm.

See all 8 photos.