Car Radiator Fan Amperage

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Car radiator fan amperage.

If you are worried hook it up to a 10 amp fuse turn it on if it blows well you know the answer. 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. 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. Motor power determines the amount of cubic feet per minute cfm of air a fan delivers.

But 10 13 amps sounds about right. Using a 30 amp fuse. Depending on the application it may freewheel above 2 500 to 3 000 rpm. Amperage used to measure how much load an electrical device draws when in operation.

The initial start up of the fan will have an amperage spike of up to 60 percent which lasts only a millisecond. At idle and low engine speeds this fan clutch is fully engaged gradually disengaging as engine speed increases. Mechanical fans only cool as much as they can based on the engine speed but electric fans draw the maximum cfm at idle because they operate independently of engine rpm. A centrifugal valve opens to allow the flow of heavy silicone fluid locking the fan blades to the pulley.

Automotive fans are rated at 13 5 volts and the rating is after the motor is at operating rpm.