Instructions / Assembly

ManualsBrandsSquare D ManualsBreaker BoxesHomeline 125 Amp 24-Space 24-Circuit Indoor Main Breaker Load Center with Cover

40271-419-04 QO

and Homeline

Load Centers

06/2005 Instruction Bulletin

ENGLISH

3. Install the wire terminal end of the circuit breaker to the mounting rail and push inward until

the plug-on jaw fully engages the bus bar connector. Keep the bottom of the circuit breaker

case against the mounting rail.

4. Remove the wire insulation from the branch wire as required. Install the branch wire into the

load terminal of the branch circuit breaker.

5. Torque each branch circuit breaker connection to the value specified on the circuit breaker.

6. Torque each neutral and ground connection to the value specified on the load center circuit

breaker.

Removal

1. Turn OFF (O) the circuit breaker. Remove the wires.

2. To disconnect the plug-on jaw from the connector and mounting rail, pull the circuit breaker

outward until it disengages from the mounting rail. See Figure 4 or Figure 5 depending on the

circuit breaker type.

Tandem Branch Circuit Breakers—Installation

Install QOT and HOMT tandem-type circuit breakers only in single-phase load centers.

Refer to the wiring diagram on the load center for the installation location.

1. Determine the wiring or conduit requirements for the branch circuit.

2. Turn OFF (O) the circuit breaker.

3. Hold the tandem circuit breaker at 30°–45° angle.

4. Install the wire terminal end of the circuit breaker into the mounting rail.

5. Rotate the circuit breaker inward until the plug-on jaw fully engages the bus bar connector.

Keep the bottom of the circuit breaker case against the mounting rail.

6. Remove the wire insulation from the branch wire as required. Install the branch wire into the

load terminal of the branch circuit breaker.

7. Torque each branch circuit breaker connection to the value specified on the circuit breaker.

8. Torque each neutral and ground connection to the value specified on the load center wiring

diagram attached to the enclosure.

Removal

1. Turn OFF (O) the circuit breaker.

2. To disconnect the plug-on jaw from the connector, pull the circuit breaker outward until it

disengages from the mounting rail. See Figure 6 or Figure 7, depending on the circuit

breaker type.

Plug-on

jaw

Bus bar

connector

Mounting

rail

Wire

terminal

end

11003005

Figure 4: QO Branch Circuit Breaker