Electrical Formulas Flashcards
Electrical Formulas symbols (25 cards)
I
AMPERAGE IR CURRENT
E
VOLT
kW
KILOWATTS
kVA
KILOVOLT-AMPERE
HP
HORSEPOWER
%Eff.
PERCENT EFFICIENCY
PF.
POWER FACTOR
VD
VOLTS DROPPED
SINGLE PHASE RESISTIVITY OF CONDUCTOR PER MIL FOOT
12.9
3 PHASE RESISTIVITY OF CONDUCTOR PER MIL FOOT
21.2
MULTIPLYING FACTOR FOR SINGLE PHASE
2
MULTIPLYING FACTOR FOR 3 PHASE
1.732
D
THE DISTANCE FROM THE SOURCE VOLTAGE TO THE LOAD
CM
CIRCULAR MIL AREA OF THE CONDUCTOR
K
KILO
ONBE kW IS
1000 WATTS
ONE KvA IS
1000 VOLT AMPS
ONE HORSEPOWER IS
746
POWER IS ALSO EXPRESSED AS?
WATTS, KILLOWATTS, VOLT AMPS AND KILO VOLT AMPS
SOLVING POWER FOR SINGLE PHASE
P=I*E
SOLVING FOR POWER FOR 3 PHASE
P=IxEx1.732
CURRENT CAN BE EXPRESSED AS
AMPS, AMPERES, FULL LOAD CURRENT(FLC) AND FULL LOAD AMPS(FLA), LOAD IN AMPS, AMPERAGE, AMPERAGE DRAW OR LINE LOAD
FORMULA FOR CURRENT SINGLE PHASE
I=P/E
FORMULA FOR CURRENT 3 PHASE
I=P/(E*1000)