How do you calculate 3 phase current?
3-Phase Calculations For 3-phase systems, we use the following equation: kW = (V × I × PF × 1.732) ÷ 1,000.
How do you calculate amps in a 3 phase circuit?
Divide the power consumption in watts by the line voltage multiplied by the power factor to find the amperage. For three phase circuits the power factor is the square root of 3. If your calculator doesn’t have a square root function, use 1.73 as an approximation of the square root of 3.
How do you calculate current per phase?
Divide the load by the voltage x route 3 x power factor. So 60000/ ( 440 x 1.732 x 0.8) = 98 . 41A per phase.
What is the difference between line current and phase current?
Line current is the current through any one line between a three-phase source and load. Phase current is the current through any one component comprising a three-phase source or load.
What is meant by 3 phase current?
In electricity, the phase refers to the distribution of a load. Three-phase power is a three-wire ac power circuit with each phase ac signal 120 electrical degrees apart. Residential homes are usually served by a single-phase power supply, while commercial and industrial facilities usually use a three-phase supply.
What is the difference between 2 phase and 3 phase?
Three-phase electric power requires less conductor mass for the same voltage and overall power, compared with a two-phase four-wire circuit of the same carrying capacity. Two-phase circuits typically use two separate pairs of current-carrying conductors.
What Colour are 3 phase wires?
International Wiring Colour Codes The USA have their own wiring colours for electrical circuits, black, red, and blue are used for 208 VAC three-phase; brown, orange and yellow are used for 480 VAC.
How many wires are in a 3 phase?
four wires
Is the blue wire active?
Blue = Neutral The neutral wire transfers electricity away from the appliance to avoid overloading. It is located at the end of the circuit for connection after the electricity has flowed around the live and earth wires. It is highly unlikely that you will have an electric shock on contact with a blue wire.
What is the blue wire in electrical?
Blue wires are used as travelers, usually on three- or four-way switches (controlling a light from multiple locations) or as switch legs for things such as fans or lights. Yellow wires are almost always used as switch legs for outlets, fans, or lights.
What is blue electrical wire used for?
Specifically, blue and yellow electrical wires are often used as “traveler wires” for transferring power between three- or four-way switches. Three-way and four-way switches operate a single appliance from multiple locations and use traveler wires to connect the switches.
What do the colors of wire mean?
US AC power circuit wiring color codes The protective ground is green or green with yellow stripe. The neutral is white, the hot (live or active) single phase wires are black , and red in the case of a second active. Three-phase lines are red, black, and blue.