What poles are used to primary inject a 6 or 8 pole Masterpact breaker?
Masterpact NW, NT
8 pole: Left hand side neutral when looking at the front
Reference Field testing and maintenance guide 48049-900-02 page 28, figure 10
Not all poles can power up the trip unit
8 Pole breaker: Poles 4, 5 and 7 when looking at the front. These poles will power up the Micrologic trip unit.
6 Pole breaker: Poles 2, 3 and 5 when looking at the front. These poles will power up the Micrologic trip unit.
All poles do meter current, so any pole can be tested if you already have the trip unit externally powered up.