Generac Power Systems 6375 Installation Manuallines page 10

Installation
4. Locate and remove a ½" KO from the bottom of the load center where marked in Step 1. Insert harness wires
from transfer switch through KO and install conduit fitting.
5. Remove and retain the two screws that secure interior assembly to the transfer switch enclosure.
6. Lift and pull out interior assembly to provide access to the four (4) mounting holes at the back of the enclosure.
Mount transfer switch enclosure in desired position using installer-provided fasteners through the four (4)
mounting holes in back of enclosure. Re-install interior assembly into enclosure (be sure not to pinch any wires
between the enclosure and interior assembly) by hooking the top of the interior assembly deadfront over the
studs on the inside of the enclosure and securing the interior assembly to the enclosure with the two screws
removed in Step 4. You are now ready to connect the transfer switch wires to the desired circuit inside the load
center.
7. Turn OFF the circuit breaker in the load center that you want to connect to the transfer switch. Loosen the
screw that secures the wire into the circuit breaker and remove the wire from the circuit breaker.
8. Insert the RED (UTIL) wire from the transfer switch into the circuit breaker and tighten screw.
9. Using a wire connector, connect the wire removed from the circuit breaker in Step 6 with the BLACK (LOAD)
wire coming from the transfer switch.
10. Insert and tighten the WHITE (neutral) wire from the transfer switch into the NEUTRAL bar in the load center.
Insert and tighten the GREEN (ground) wire from the transfer switch into the GROUND bar in the load center.
If there is no ground bar, insert and tighten it into the NEUTRAL bar.
11. Reinstall load center cover. Turn on circuit breaker turned off in Step 6. Transfer switch is now ready for testing
and operation.
Model 6377 – 30 amp 2-pole Transfer Switch
1. Turn off the main circuit breaker in the load center before starting installation.
2. This transfer switch can be installed to the left or right side of load center. Trial fit the unit, holding up to the wall
about 18" from the center of the Load Center, and mark the location of the transfer switch and end of harness
at load center.
3. Remove the load center cover.
4. Open front cover of transfer switch by removing screw near bottom. Remove and retain the two screws that
secure interior assembly to the enclosure. Lift and pull out interior assembly.
5. If required, remove KO on the back of the enclosure before mounting the enclosure. Connect fitting to back
KO. Then mount enclosure in desired position using installer-provided fasteners through the four (4) mounting
holes in back of enclosure, and seal the four mounting fasteners.
6. If required, remove side KO(s) and install appropriate fittings and conduit.
7. Pull in appropriate quantity, size and color (green/white/black/red) wire into the enclosure.
8. Insert the WHITE (neutral) wire pulled into the enclosure into the "W" terminal on the inlet mounted on the inte-
rior assembly and tighten terminal screw OR connect to the WHITE (neutral) pigtail installed on the inlet using
a wire connector.
9. Use wire connectors (installer-provided) to make these connections:
a. Connect the GREEN (ground) wire pulled into the enclosure with the GREEN (ground) pigtail attached to
the interior assembly,
b. Connect the UTIL wire(s) pulled into the enclosure to the RED lead(s) marked UTIL on the interior assem-
bly and
c. Connect the LOAD wire(s) pulled into the enclosure to the BLACK lead(s) marked LOAD on the interior
assembly.
10. Fold wires and re-install interior assembly into enclosure (be sure not to pinch any wires between the enclo-
sure and interior assembly) by hooking the top of the interior assembly deadfront over the studs on the inside
of the enclosure and secure the interior assembly to the enclosure with the two screws removed in Step 3.
Transfer switch is now ready for testing and operation.
6 Transfer Switch Installation Guidelines