True or False?Branch wiring from a 200A - 3 phase 4 wire panelboard.WIRE #PHASES 1 --- PHASE A 2 --- PHASE B 3 --- PHASE C 4 --- NEUTRAL - WHITE WIRE 5 --- PHASE A 6 --- PHASE B 7 --- PHASE C 8 --- NEUTRAL 9 --- GROUNDTOTAL OF 9 WIRES GOING TO SIX (6) 20A 120V CIRCUITS
That's true. 9 wires may go to 6 circuits. Each circuit has one phase so 1,2,3,5,6,7 are the six phases going to six circuits. For two pair of three phases (pair one 1,2,3)(pair two 5,6,7) there are two neutral wires and one common earth wire. that is total nine wires. there is nothing wrong in it.
False! If you had 6 120v circuits each circuit has 1 phase, 1 neutral conductor and 1 ground conductor for a total of 3 wires per circuit. 6 circuits times 3 conductors equals 18 wires. You don't use the same neutral conductor for different phases but you can if they are the same phase provided you don't go over the maximum allowed current rating for that wire and insulation.
Wrong. The panel has the set up so that a 3 phase breaker can be next to each other for example Breakers left side of panel 1= #1 line 3= # 2 line 5 = #3 line Neutral is the large bar on the side were the ground line goes. don't attach a neutral line to a breaker!!!!!! Make sure you buy a 3 phase breaker for equipment with that voltage and phase.
