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Which motor is more powerful the one that is marked as 230V 50Hz 1400W or the other one that is marked 120V 60Hz 12A?
Wiki User
∙ 11y ago
Another AnswerTo answer your question, it's necessary to compare 'like with like'. And the information you supply doesn't enable us to do this because, for the 230-V motor, you are specifying its output power whereas, for the 120-V motor the supplied information only allows us to determine its inputpower!
The rated power of a motor always describes its output power, never its input power. This is because its input power is of academic interest only; what matters is how much power it can deliver to its mechanical load.
So, in the case of the 230-V motor, we know that its output power is 1400 W.
As for the 120-V motor, we are given enough information to calculate its input power (1440 W) but, without knowing its efficiency, we can't really determine its output power.
So the simple answer is that we don't really know which motor is the more powerful based on your information, but for the 120 V motor to match the output power of the 230-V motor, it would need to be 97% efficient... which is unlikely (too high) for a motor.
So I would have to say that the 230-V motor is likely to be slightly more powerful than the 120-V motor.
Wiki User
∙ 11y ago
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