Typical 120 208 Voltage Colors

120 208 240 volt ac wire color codes.

Typical 120 208 voltage colors.

White or with 3 white stripes neutral. In western canada 347 600v is common. Black phase 1. Each one is 120 degrees behind the next.

In the united states the following color codes are typically used for power wires in branch circuits the wiring between the last protective device such as a circuit breaker and the load such as a tool or appliance. The conductors between a voltage source and a load are called lines and the voltage between any two lines is called line voltage the voltage measured between any line and neutral is called phase voltage. Electrical wiring color codes. Blue phase 3.

The most common commercial building electric service in north america is 120 208 volt wye which is used to power 120 volt plug loads lighting and smaller hvac systems. Phase a 120v black phase b 208v wild leg high phase orange phase c 120v blue there are other color. 120 208v single phase power. This all stems from the nature of 208v power and how it is affected by transformers.

The incoming 240v power is split into two legs. These systems are common in home and office. For example for a 208 120 volt service the line voltage is 208 volts and the phase voltage is 120 volts. For wires that will be 120 208 or 240 volts the following wiring color standards are used.

It is important to note that with this type of wiring there are multiple phases in place each of which will get its own color wire. If viewed on an oscilloscope the three voltage waveforms on the three hot conductors all peak at different times. Assuming you are talking about a 120 240v delta system the color coding is as follows. Line and phase voltage.

277 480 volt ac wire color codes. Ac power 120 208 240 volts ac power comes in many different types based on how many volts the wires will be carrying. Each leg can provide 120v hot to neutral and the two legs together will supply 240v which is used to supply heavy loads such as air conditioning compressors and cookstoves. In larger facilities the voltage is 277 480 volt and used to power single phase 277 volt lighting and larger hvac loads.

Dc supply wire color codes. 120 208 240 volt ac wire colors. Typical power wiring color codes. 120 208v single phase is derived from 208v three phase power.

The wire color codes followed in usa for ac supply may be categorized in three sub categories depending on the nature and range of ac supply. Red phase 2.