# How many amps does a windshield wiper motor take?

## How many amps does a windshield wiper motor take?

Wiper motors are used by enthusiasts to power wheel chairs. You might do well to google “wiper motor current draw”. At any rate an average wiper draws 5 amps, rising to 10 to 12 amps under heavy/stall load.

**How many amps is a 12V wiper motor?**

Wiper motors will probably not exceed 50 watts (4.2 amps at 12 volts).

### What is the power of a wiper motor?

The standard wiper motor power supply of 12 volts is usually enough, although other voltage ratings are also usable.

**How much voltage can a wiper motor handle?**

Voltage. The standard voltage requirement for the wiper motor is 12 volts DC. The electrical system in a running automobile usually puts out between 13 and 13.5 volts, so it’s safe to say the motor can handle up to 13.5 volts with no problem.

#### How is wiper motor torque calculated?

= Angular velocity x 60 / (2 x 3.14) = 0.98 * 60 / (2 * 3.14) = 9.3 rpm = 10 rpm The required motor torque from calculation is above is 2.55 Nm and required motor speed is 10 rpm. This requirement is easily fulfilled by wiper motor as it can give 5 Nm torque at 65 rpm.

**How much torque does a wiper motor have?**

“ My unscientific test (using one wiper motor and a torque wrench) found that at 12 volts, on high speed, the motor has 13.5 pound-feet and on low speed, has 17.5 pound-feet of torque.” Depending on the type of motor, they can draw anywhere from 5 to 10 amps.

## Can you run a 12V wiper motor on 24V?

At 24V the motor may be able to run but will get fairly hot. Long term it will wear out the bearings and seize up. If it can’t handle the power it will burn out the motor pretty fast. If you run a 12v motor from 24v its current drain and speed will still depend on the mechanical loading.

**How can I speed up my wiper motor?**

Speed = Torque / Load. You have more torque, you have more speed, if you want to increase speed, increase torque or decrease load. If you limit your current, all you are doing is telling the power supply to lower the voltage if the current exceeds your limit. Lowering the voltage lowers the current.

### How many HP is a wiper motor?

Depending on the type of motor, they can draw anywhere from 5 to 10 amps. So converting that to HP using 13V as voltage and 65% efficiency, you get 0.11HP. While that depends on factors like size of wiper, vehicle it might be used for, etc, generally the rating will be under 100 watts.

**How do you calculate torque for a motor?**

To calculate load torque, multiply the force (F) by the distance away from the rotational axis, which is the radius of the pulley (r). If the mass of the load (blue box) is 20 Newtons, and the radius of the pulley is 5 cm away, then the required torque for the application is 20 N x 0.05 m = 1 Nm.

#### Why does a wiper motor have 3 brushes?

The wiper motors now in use (Fig. 30.3) are mostly of permanent magnet three brush types, which are driven through a worm gear to increase torque and reduce speed. The three brushes permit two speed operations. motor must overcome the starting friction of each blade at a minimum speed of 5 rpm.