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This page containes electrical formula, symbols information available from most refference books.
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COLOR CODE MOTORS OHMS LAW TRANSFORMERS Symbols CLICK PICTURES TO ENLARGE
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AREA FACT DEFINITIONS COLOR CODE BLACK = 0
COLOR CODE BROWN = 1
COLOR CODE RED= 2
COLOR CODE ORANGE = 3
COLOR CODE YELLOW = 4
COLOR CODE GREEN = 5
COLOR CODE BLUE = 6
COLOR CODE VIOLET = 7
COLOR CODE GRAY = 8
COLOR CODE WHITE = 9
COLOR CODE GOLD = %
COLOR CODE SILVER = %
MOTOR Amps Single Phase (HP x 746) / (E x % Eff x PF ) Eff = Efficiency PF= POWER FACTOR I = AMPS E= VOLTS R=OHMS P=WATTS MOTOR Amps Three Phase (HP x 746) / (E x % Eff x PF x 1.73) Eff = Efficiency PF= POWER FACTOR I = AMPS E= VOLTS R=OHMS P=WATTS MOTOR CURRENTS CHART CLICK HERE
MOTOR CURRENTS HOA CIRCUIT CLICK HERE HAND OFF AUTO CIRCUIT MOTOR CURRENTS JOG CIRCUIT CLICK HERE JOG JOGGING CIRCUIT MOTOR CURRENTS STOP START CIRCUIT CLICK HERE 2 WIRE AND THREE WIRE START STOP CIRCUIT MOTOR HP Circuit Breaker Three Phase ** Inverse Time: FLA x 1.75 Eff = Efficiency PF= POWER FACTOR I = AMPS E= VOLTS R=OHMS P=WATTS MOTOR HP Circuit Breaker Three Phase ** Inverse Time: FLA x 2.50 Eff = Efficiency PF= POWER FACTOR I = AMPS E= VOLTS R=OHMS P=WATTS MOTOR HP Circuit Breaker Three Phase ** Dual Element,Time Delay (FLA x 1.75) Eff = Efficiency PF= POWER FACTOR I = AMPS E= VOLTS R=OHMS P=WATTS MOTOR HP Fuse Single Phase ** Dual Element,Time Delay (FLA x 1.75) Eff = Efficiency PF= POWER FACTOR I = AMPS E= VOLTS R=OHMS P=WATTS MOTOR HP Single Phase (E x I x % Eff x PF) / 746 Eff = Efficiency PF= POWER FACTOR I = AMPS E= VOLTS R=OHMS P=WATTS MOTOR HP Three Phase (E x I x % Eff x PFx 1.73) / 746 Eff = Efficiency PF= POWER FACTOR I = AMPS E= VOLTS R=OHMS P=WATTS Motor Notes ** Check Motor Recommendations
OHMS LAW I = E/R R = E/I E = I/R I = AMPS E= VOLTS R=OHMS P=WATTS OHMS LAW P = I x E I = AMPS E= VOLTS R=OHMS P=WATTS OHMS LAW
PARALLEL CKTI(t) = I(1) + I(2) +...I(n) I = AMPS E= VOLTS R=OHMS P=WATTS OHMS LAW
PARALLEL CKTE(t) = E(1) = E(2) =...I(n) I = AMPS E= VOLTS R=OHMS P=WATTS OHMS LAW
PARALLEL CKTR(t) = 1/R(1) + 1/R(2) +...1/R(n) I = AMPS E= VOLTS R=OHMS P=WATTS OHMS LAW
SERIES CKTI(t) = I(1) = I(2) =...I(n) I = AMPS E= VOLTS R=OHMS P=WATTS OHMS LAW
SERIES CKTE(t) = E(1) + E(2) +...I(n) I = AMPS E= VOLTS R=OHMS P=WATTS OHMS LAW
SERIES CKTR(t) = R(1) + R(2) +...R(n) I = AMPS E= VOLTS R=OHMS P=WATTS OHMS LAW
POWERKW = KVA x PF Eff = Efficiency PF= POWER FACTOR I = AMPS E= VOLTS R=OHMS P=WATTS OHMS LAW
POWER 3 PHKVA = E x I x 1.73 Eff = Efficiency PF= POWER FACTOR I = AMPS E= VOLTS R=OHMS P=WATTS OHMS LAW
Power FactorRatio of True Power, (I x E) with current (I) in phase with the voltage (E) To, (I x E ) where current (I) is is leading or lagging the voltage. (inductive or capacitive circuits)
TRANSFORMERS BUCK BOOST CONNECTION CLICK HERE
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TRANSFORMERS SHORT CIRCUIT CALCULATION CLICK HERE
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TRANSFORMERS SINGLE PHASE CONNECTION CLICK HERE
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TRANSFORMERS THREE PHASE CONNECTION CLICK HERE
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