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Ecm Motor Amp Draw. For measuring the amps on ecm motors you need a true rms meter, so if you did something wireless, you would need something like the the fieldpiece sc57, or the fluke 381 or cnx setup. It’s the ecm motor that is more efficient.
Comparison of ECM and shaded pole inducer amp draw. YouTube from www.youtube.com
Building america solution center is a resource of the u.s. The ecm is a dc motor, with a permanent magnet rotor. Just like other pumping applications, if you can reduce the speed, you reduce the pumping head or gpm or both and the results are less amp draw which saves energy.
Comparison of ECM and shaded pole inducer amp draw. YouTube
The amount of power the motor draws has a rough correlation to the voltage x current (amps). Just like other pumping applications, if you can reduce the speed, you reduce the pumping head or gpm or both and the results are less amp draw which saves energy. The amount of power the motor draws has a rough correlation to the voltage x current (amps). (ecm/variable speed) ecms are much more efficient than conventional blower motors on low speed.
