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Can you replace the 5HP 3-phase motor on your compressor with a single phase motor of the same HP?

Answer:

Probably. 5 hp. is 5 hp., regardless of the phases that drive it.

But for practical implementation, you will see following problems:

1] Single phase motor will demand for neutral connection.

2] As entire current for 5HP load will be now on single phase, your conductor will be loaded 1.732 times its rated load ( for 3 phase motor design) Hence it may call for increase in conductor cross section.

3] As entire 5 HP load will be now on single phase, your loading will be unbalanced.

Single phase equivalent motor will be of slightly bigger dimension hence mounting arrangement will have to be suitably modified.

First answer by Hskhedkar. Last edit by Hskhedkar. Contributor trust: 7 [recommend contributor ]. Question popularity: 1 [recommend question].

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