What does high amp draw on a motor mean?
Amp draw is a measurement of the power being consumed by a blower motor to move the air through your HVAC system. … If the measured amp draw exceeds the capacity of the motor, the motor will fail prematurely.
What causes a pump to draw high amps?
A high specific speed impeller is used in your pump. When the discharge is throttled, the pump draws more power. … … Depending on the pump design, you have too much clearance between the volute and the back plate.
How do you reduce amps on a motor?
In order to lower the amperage of an electrical circuit, you must either lower the circuit’s voltage or increase its resistance. Lowering amperage is done by applying Ohm’s law, given by the formula I = V/R, where I is the circuit’s total current in amperes, V is the voltage and R is the resistance.
Is a higher amp motor better?
The faster a motor can spin the more air it can draw through the motor to help cool it down. So amps measures or indicates the maximum time a tool can continuously run without exceeding the temperature limits. … With this in mind, more amps can be good because motors will run longer and won’t heat up as fast.
Can you over AMP a motor?
An increase in current is a danger to the motor only if that current exceeds the motor’s nameplate current rating. When amps go above the nameplate rating, heat begins to build up in the motor. … The more heat and the longer the exposure to it, the more damage to the motor.
Why does motor current increase with load?
If the mechanical load increases, the rotor stops a bit (since it’s harder for the rotor to rotate a heavier load), which decreases the counter-EMF. This reduction in the counter-EMF thus increases the current in the coil, and so the power needed from the external voltage source.