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Current (I), measured in amperes (A) is equal to the true power (P) measured in watts (W) divided by the system voltage (V) measure in volts (V), in a single phase alternating current circuit.
I = P/V ohms law... eq 1
1 hp = 745.69W... eq 2
From your question the parameters given are:
V = 120 VAC
Horsepower = 1.5hp
Substituting in eq 2
1.5 hp * 745.69 = 1118.53W
Substituting in eq 1
I = 1118.53/ 120
I = 9.32A.
NB: among other factors that impact on the actual current drawn from any electrical apparatus all motors draw a higher current on start up which is several times higher than calculated values as stipulated above.
Hope this helps!
trinilink
AnswerAs the horsepower rating of a machine describes its outputpower, it will first be necessary to determine its input power. To do this, you must determine its efficiency before embarking on the method described above.
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∙ 12y ago
Anonymous
don't no
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23
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