**We need you to answer this question!**

###### If you know the answer to this question, please register to join our limited beta program and start the conversation right now!

## Related Questions

###### Asked in Technology

### What is 100 kW in Celsius?

###### Asked in Home Electricity, Electrical Engineering

### Why you use KVA in transformer rating instead of KW?

Transformer power is given by P=V*I which takes the unit of KVA
while that of KW has energy term which is not produced by the
transformer.It only steps up or down the voltage.
Answer:
In a pure D.C. circuit, KW = KVA. However, in any A.C. circuit,
there is real power {KW} and apparent power {KVA}, due to the
voltage and current being out of phase. Power Factor is the ratio
of KW to KVA. Transformers are rated in both KVA and PF.
Multiplying the transformer KVA rating times the PF will yield
KW.
<<>>
A transformer has separate ratings for maximum voltage and
maximum current. Multiply the two together and that is called the
VA rating, or kVA for larger transformers. So the transformer
rating is independent of the power factor of the load.

###### Asked in Home Electricity, Physics, Electrical Engineering

### Why alternators are measured in Kva but not in KW?

Depending upon the connected load ( R, RL, RC or RLC) with a
transformer, the power goes ou from a transformer may be of two
types: 1. Active Power; measured in kW 2. Reactive Power; measured
in kVAR If the rating will be in kW, then kVAR rating would not be
accounted but if the rating is in kVA then it is possible for us to
calculate the total active and reactive current as well as the
powers, at a particular system voltage!

###### Asked in Home Appliances, Washing Machines & Dryers

### How much amperage does a washing machine draw?

Check the nameplate rating on the door or door frame of your
washer, it should tell you the amp rating or the kw rating of the
machine. If it only has the KW rating of the machine, simply divide
the KW rating by the voltage of the receptacle and it'll give you
the current (ampere) rating. Typically, a modern washing machine
will draw approximately 7-12 amps. However, anticipate a higher
amperage when starting the machine as the machine will draw 1.5X
the rated current to start the machine (starting current).
Regardless of the amp rating, the NFPA-70 (National Electrical
Code) requiresa 20 Amp fuse or circuit breaker; and the
circuit for the washing machine must be on its own, dedicated
circuit.

###### Asked in Electrical Engineering

### Why transformer rating is not given in kw?

Transformer rating is based on the maximum temperature a
transformer can run at. This temperature is dictated by the amount
of current flowing through the transformer windings. This is why
transformers are rated in KVA (voltage * current), not kW - it
doesn't matter what the phase relationship is between voltage and
current, just the magnitude of the current.

###### Asked in Home Electricity, Electrical Engineering

### What generator capacity can power a 30HP 60 HZ 3 phase dryer?

First you will need a three phase generator. Mathematically
there are 746 Watts per horsepower, but I like to use 1000 Watts
for ease of mental calculation. This would mean you would need a 30
kW generator. If using 746 Watts per HP, you would need 22380
Watts, or 23 kW. Make sure this 23 kW is the normal load rating of
the generator, not the surge rating! 30 kW would provide more of a
safety cushion.