The neutral line in a three-phase four-wire system is different from the zero line or neutral line which enters the user's home in a single-phase transmission line. In the low-voltage (the normal voltages of 240V and 415V delivered to most customers) distribution network, the transmission line generally adopts a three-phase four-wire system, of which three lines represent the three phases of L1, L2, and 元 respectively, and the other is a neutral line N.
Electrical wiring color code standards are specified according to different power distribution branch circuits: AC (alternating current) and DC (direct current).ĪC is widely used in distribution and transmission electrical networks. It is important to abide by the electrical wiring color code standards for safety concerns. The electrical wiring color code standards not only help in appliance addition, but also offer support when there is a need to replace the old wires with new ones. Given such potential hazards, electrical wiring color code standards is a necessity to be made. Therefore, keeping the consistency of the wire colors before and after adding the appliances is vital. People dealing with the wires may get electrocuted or the circuit won’t work due to the wrong connection. What would you do if there is no distinction of the three wires? If there is any mistake resulting in the misconnection of these wires, for example, the live wire is wrongly regarded as neutral wire or earth wire, big safety problems may occur. Imagining that a power link has been cut into two parts for an insertion of an additional appliance to support more electrical devices between the two parts. The third wire is the earth wire designed for important safety considerations. One wire brings electricity to the appliance and one wire completes the circuit by taking electricity away from the appliance, these two wires are called “live” and “neutral/zero” respectively.
Why Are Electrical Wiring Color Codes Important?Įlectrical wiring color codes matter a lot even if there are safety features such as the fuse, the double insulation design and the earth wire in plugs and appliances for electrical connection.įor example, in a home electrical system, there are usually three wires/lines in a power cord or in the whole power link entering into buildings.
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