Electrical Wiring- 3 phase panel detail - YouTube Click to view on Bing6:20Jun 03, 2011It is part of electrical wiring systems common in the U.S. This electrical panel is a 3 phase 4 wire 120/208 v 200 amp panel with 42 spaces. It is considered a bolt on breaker style with a mainAuthor: Electrical Industry NetworkViews: 497K 3 Phase Panel Board Wiring Diagram - Distribution Board Which are 3 pole 600 Ampere MCCB circuit breaker. And have 5 other 100 Ampere circuit breakers. In the 3 phase panel board wiring diagram you will see Ampere meter with current transformer connection, some light indicators and Volt meters. 3 Phase Panel Board Wiring Diagram In below three phase distribution board wiring diagram shown.