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White: 14 AWG wire (2.08 mm 2) for 15-amp circuits Yellow: 12 AWG wire (3.31 mm 2) for 20-amp circuits Orange: 10 AWG wire (5.26 mm 2) for 30-amp circuits Black: 6 or 8 AWG wire (13.3 mm 2 or 8.37 mm 2) for 60- and 45-amp circuits, respectively Grey: usage for underground installations, designated as "underground feeder" (UF) cables [4]
Twist-on wire connectors are a type of electrical connector used to fasten two or more low-voltage (or extra-low-voltage) electrical conductors. They are widely used in North America and several European countries in residential, commercial and industrial building power wiring, but have been banned in some other jurisdictions.
For power circuits, the color-coding uses the same colors as residential construction, and adds the additional wires used for three-phase systems. Black, Red and Blue are used for hot wires and White is used as the neutral wire in a 120/208 V circuit. Brown, Orange and Yellow are used as hot wires and gray is used as the neutral wire in a 277/ ...
Starting with the first binder group in the center, the technician counts the cable's groups in a spiral direction depending on the location of the central office or switch. If looking at the cable's core and the switch is in that direction, the groups are counted counter-clockwise. If the cable is the field side, the count is clockwise. There ...
The international standard IEC 60446 Basic and safety principles for man-machine interface, marking and identification - Identification of equipment terminals, conductor terminations and conductors was a standard published by the International Electrotechnical Commission (IEC) that defined basic safety principles for identifying electrical conductors by colours or numerals, for example in ...
The cable connectors and sockets are keyed and colour-coded, according to the voltage range and frequency used; common colours for 50–60 Hz AC power are yellow for 100–130 volts, blue for 200–250 volts, and red for 380–480 volts. The blue fittings are often used for providing weather-proofed exterior sockets for outdoor apparatus.
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