if we convert ampers into kwh or mwh ,which one formula use by us,pls tell me?

if we convert ampers into kwh or mwh ,which one formula use
by us,pls tell me?

Question Posted / manoj

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if we convert ampers into kwh or mwh ,which one formula use by us,pls tell me?..

Answer / omar aziz

Look , Always try to understand what quantities you have
and their significance. This will help you derive other
quantities yourself using the first principles. Lets derive
KWhr from current I !

Firstly you need to know the voltage at which this current
is drawn from its supply. V

Once you have this info you can find the power flow = V x I
this is in W if you use SI units throughout

Divide it by 1000 to get KW

KWh = unit of energy therfore its Power x time

Now how long would your current be drawn for. say its a fan
drawing 2 Amps and you keep it on for 5 hrs at 240V

(240V x 2A x 5hr)/1000 = 2.4 KWhr

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if we convert ampers into kwh or mwh ,which one formula use by us,pls tell me?..

Answer / virendra joshi

KWH = watt x no of hour /1000

W = v x I for single phase
w = 1.73 x VL x IL x Cos@

Is This Answer Correct ?

6 Yes

0 No

if we convert ampers into kwh or mwh ,which one formula use by us,pls tell me?..

Answer / s.arul

ohms law: V = IR
you know the current rating, you take the machine
resistense using megger. calculate the voltage rating of
machine.
1 phase: power = V * I * power factor (watts)
3 phase: power = 1.732 * V * I * power factor (watts)
ENERGY (KWH) = POWER * TIME
so, we can calculate the KWH or MWH of the machine....

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