Radiator Cooling Fan Amp Draw

Most of the spal fans can run off of the existing vehicle electrical system without any problems.

Radiator cooling fan amp draw.

Puller style fans mount behind the radiator and draw air through the core. Wiring dual cooling fans with dual cooling fans there are two methods for wiring up the relay kit. I went and purchased a multimeter with a clamp on ammeter up to 40amps. Electric radiator fans are available in both pusher and puller designs.

With a cooling fan the greater the airflow the better that fan s ability to cool a radiator. 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. The higher output fans that draw 25 amps and up may need a higher output alternator to keep the battery from going dead.

Puller style fans are recommended for applications in which the electric fan is the primary cooling source. Twelve to 16 inch fans can draw from 15 to 28 amps while some dual fan applications can draw up to 35 amps. This is based on the draw from the fans if the fans are larger and draw more than 15 amps each it s recommended to install a second relay kit as shown below. Pusher style fans mount on the front of the radiator and blow air through the radiator core.

Make sure your electrical system can handle the addition of an electric fan. The more powerful a fan is the more current it will draw from your vehicle s electrical system. The relay fan control should be mounted on a clean surface with heatsink grease to allow the heat to dissapate into the frame. Automotive fans are rated at 13 5 volts and the rating is after the motor is at operating rpm.