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How do you short out a neutral CT for NT, NW, P or R breakers when it is installed, but you don`t want to use it? Do jumpers need to be added?

Issue:
Sometimes an installed circuit breaker is connected to an installed neutral CT, and there is a need to disconnect the NCT wires from the breaker, but the neutral CT cannot be physically removed from the equipment. When the NCT wires are disconnected, is there a need to add any jumpers to the NCT terminals?

Product Line:
Circuit Breakers

Environment:
Applies only to Masterpact NT, NW, and Powerpact P and R circuit breakers

Resolution:
For Masterpact NT, NW, or Powerpact P or R Circuit Breaker with neutral CT already installed, in order to disconnect the NCT from the breaker without removing the NCT from the equpment, follow these steps:

NEUTRAL CT'S WITH TERMINALS LABELED T1, T2, T3, T4
(1) De-energize the equipment
(2) NCT terminals
  • Remove the wires from NCT or breaker terminals T1 and T2 (there is no need to jumper those terminals)
  • Make sure there is a jumper between NCT terminals T3 and T4
(3) Circuit Breaker terminals (green connector on top of the trip unit)
  • Remove the wires from breaker terminals T1 and T2, and ADD A JUMPER between breaker terminals T1 and T2
  • Do NOT add add a jumper between breaker terminals T3 and T4

OLDER NEUTRAL CT'S WITH TERMINALS LABELED SG1, SG2, X1 and X2
(1) De-energize the equipment
(2) NCT terminals
  • Remove the wires from NCT terminals SG2 and SG1 (there is no need to jumper those terminals)
  • Make sure there is a jumper between NCT terminals X1 and X2
(3) Circuit Breaker terminals (green connector on top of trip unit)
  • Remove the wires from breaker terminals T1 and T2, and ADD A JUMPER between breaker terminals T1 and T2
  • Do NOT add add a jumper between breaker terminals T3 and T4
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