Replies

To: evolved_rage

Just a quick scan of the article brings up only one item of objection: single phase versus 3 phase. A single phase 230V motor of 1 h.p. is rated by the National Electric Code at 8 amps. A 3 phase 1 h.p. 1800 RPM motor at 230Vis rated at 3.5 amps. I do little work with 230V, but the standard 480V 3 phase 1 hp 1750 RPM motor draws 1.3 amps. The 1750 rpm is because a standard motor has a little "slip" in it magnetically. If it were synchronous it would be 1800 rpm.

Result of 35 years of industrial electrical work.

40 posted on 03/06/2005 5:50:39 PM PST by AntiBurr ("You cannot play the song of freedom on an instrument of oppression! "--- S. Lec)

Question (from a guy who subed out all his electrical work)
In the 230v vs. the 3 phase, the total watts "used" remain the same?

44 posted on 03/06/2005 8:08:07 PM PST by investigateworld (Another California Refugee in Oregon)

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