Your service entrance cable could be Black, Red, White and bare cable. In a 240 V panel there would be 240V between Black and Red and 120 V between Black and White and Red and White. In the branch circuits the colors are Black, White and Bare wire. Black is Hot, White is Neutral and bare wire is earth ground and should be terminated on the ground bus in the main panel.
blue
Blue
Yea blue is correct.
I think what you have here is a 120/208 three phase panel
The colors used in 120/208 volt 3 phase system would be Black, Red and Blue
Black = phase A
Red = phase B
Blue = phase C
The voltage between any of these phases' conductors and ground or the neutral, which is also a grounded conductor will be 120 volts read in RMS. Most voltmeters read the RMS voltage.
The voltage between any two of these phase conductors will be 208 volts, be careful.
When you view the front of the panel the breakers on the left will all be odd numbers, and the breakers on the right will all be even numbers.
All of the circuits combined; one black, one red, and one blue are sometimes referred to as a network. All three phases are there.
Looking at the panel from the front...left side
1,3 and 5 are a network because there is an A, B, and C phase together
Looking at the panel from the front...right side
2, 4, and 6 are a network because there is an A, B, and C phase together
This pattern just keeps repeating and if you look in the panel you will find black, red, and then blue down both sides of the panel.
A quick way to determine the phase color is to divide the circuit number by either 6 or 3 and then find the remainder. Use the remainder as if it were the circuit number to determine the phase. This makes the number smaller. In the circuit 23 case here 23/6 = 18 remainder 5; 5 is the C phase and should be blue.
If the number is smaller use 3 to find the remainder.
Also if the remainder is either 5 or zero the phase is C
Hope this helps
1 Blk 2 Blk
3 Red 4 Red
5 Blue 6 Blue
Question is incorrect. in a 240 Volt single phase circuit, how can you have A phase and B phase?
Three phase uses a safety circuit away from the machine, two phases uses you as the safety circuit
Electric power is measured in watts. It does not matter if it is single phase or three phase. All things being equal, for the same load, the power measured in a single phase circuit or a three phase circuit, will be the same.
If you are referring to the 25KW Power Distribution Panel used by the military, NSN: 6110-01-244-3209, there are four 120VAC, 20A circuit breakers and four corresponding twist lock receptacles.
You have to follow the lines. Could be blown fuse or any number of other things. Follow it back to the service.
yes we can use as a single phase circuit because at practise directly the 3-phase circuit is made by combining the three single phase circuits
You can't get 230 from a 440 panel. You'll need a step down trandormer
The term, single-phase 'panel', describes an electricity distribution panel (called a 'consumer unit' in the UK) comprising line, neutral, and earth (ground) busbars, supplying a number of circuits which are each protected with either a fuse or a miniature circuit breaker. The panel normally incorporates an isolation switch that will disconnect the busbars from the supply system. The panel is fed from the utility company's supply system, via a fuse and energy meter.
This is called a "line-to-line" short and it will trip either the main circuit breaker in the panel, or the fuse protecting the panel. It might also result in personal injury if someone is in contact with the equipment when the short happens. Equipment or damage is also possible.
if it is connected correctly it will run. However, you may want to modify the circuit to confirm to the NEC so you may protect the device from overloading and burring up!for example you may use the 32Amp circuit as a sub-panel!
In a pure resistive circuit the voltage and current are in phase. In an inductive circuit they are fro zero to 180 degrees out of phase. If they are in phase the Power Factor is 1 and 180 degrees the PF is zero. The exact amount of the phase difference depends on the specific circuit.
single phase have 2 wire treephase have 3, and 4 wires
Question is incorrect. in a 240 Volt single phase circuit, how can you have A phase and B phase?
Most of the breakers in a panel will be 120 VAC. Double height breakers are 240 VAC. A triple height breaker probably indicates you have 3-phase power in the panel.
Yes, there is a difference between single phase and three phase circuits.
A three phase motor control circuit.
Three phase uses a safety circuit away from the machine, two phases uses you as the safety circuit