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why current increases when voltage decreases in ac
system
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Answer Posted / bowana
Ok well lets just back up a moment. what do you think
would happen if you applied 240v to a 120v motor (motor
wired only for 120v application). what everyone is saying
is the motor will only draw half the amps/maintain the same
wattage. Go ahead and try it. You might get a few seconds
out of the motor before it smokes. If motor windings
resistance stays constant, and you increase
voltage.....current goes up.
e over I/R (ohms law)
variables
volts (e) = 120
resis (r)= 10
NOW SOLVE FOR (I) "CURRENT"
120V DIVIDED BY 10 OHMS = 12 AMPS
240V DIVIDED BY 10 OHMS = 24 AMPS
smoke test 101
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