In three phase power supply the combination of black red and blue wires for power conductors are used for 120240v ac whereas the combination of brown orange and yellow wires for power conductors are used for 277480 v ac. Three phase electric power is a common method of alternating current electric power generation transmission and distribution.
Wiring Of Three Phase Induction Motor
3 phase motor wiring color code. Neutral neutral wires. Inst maint wiringqxd 5032008 1002 am. A three wire three phase circuit is usually more economical than an equivalent two wire. Blue phase 3. For example all the wiring might be gray with wires identified by numbers or labels this is also permissible by as 3000. The colors adopted as local practice are shown in table below.
It is a type of polyphase system and is the most common method used by electrical grids worldwide to transfer power. It is also used to power large motors and other heavy loads. If you want to add your own country region or saw some weird wiring color codes let us know in the comment box below and we will be able to add them to this post. Black phase 1. Orange phase 2. Green with yellow stripe ground.
Thermal contacts tb. Typical power wiring color codes. There are quite a few different wire color code standards in place so it is important to understand which one to follow in which situation. Brown phase 1. Us acthe us national electrical code only mandates white or grey for the neutral power conductor and bare copper green or green with yellow stripe for the protective groundin principle any other colors except these may be used for the power conductors. The standards used will vary based on what country the wiring is being done in and the type electricity it is for and other factors.
The wiring may also come with no colour code at all. Capacitor motor single phase wiring diagrams always use wiring diagram supplied on motor nameplate. For all other single phase wiring diagrams refer to the manufacturers data on the motor. White or with 3 white stripes neutral. Brown orange and. W2 cj2 ui vi wi w2 cj2 ui vi wi a cow voltage y high voltage z t4 til t12 10 til t4 t5 ali l2 t12 ti blu t2 wht t3org t4 yel t5 blk t6 gry t7 pnk t8 red t9 brk red tio curry tii grn t12 vlt z t4 til t12.
Phase 3 phase 3 wiring should be yellow. These diagrams are current at the time of publication check the wiring diagram supplied with the motor. Yellow phase 3. Diagram dd6 diagram dd7 m 1 ln e diagram dd8 ln e l1 l2 l3 sc z1 u2 z2 u1 cap. The internal wiring of equipment may come with european colour codes brown gray black blue this is permissible by as 3000. The common color code for three phase in on or behind the wall electrical wiring is shown below.
Gray or with 2 white stripes. Black red and blue are used for 208 vac three phase. All you have learnt the wiring color codes for both dc and ac 1 3 phase circuits in iec nec and other regional relations. Red phase 2.
Gallery of 3 Phase Motor Wiring Color Code
