GE Energy THQLLX8DR User manual

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8 Circuits Generator Interlock Kit: THQLLX8DR
General
To comply with the National Electrical Code and
Underwriters Laboratories, the Generator Interlock kit
must be installed in accordance with the information
contained in this instruction manual and by a qualified
electrical contractor and/or licensed electrician.
Introduction
This bulletin provides instructions for installing the
interlock and circuit breaker retainer on the 400A rated
Model 1 GE Meter Socket Load Centers: TSDR840UFCU.
Installation
Step 1: Install the Retainer
1. Uninstall the dead front, and retain the mounting
screws.
2. Install the 2-pole back-fed main breaker in the
position shown in Figure 1.
3. Install the conductors into the 2-pole back-fed main
breaker. Check breaker for wire range and tightening
torque information.
4. Loosen the copper strap mounting screw.
5. Install the retainer and secure using the nuts provided
in the kit (see Figure 1). Tighten to 35 lbs-in (4 N-m).
Figure 1: Main Breaker Retainer
Step 2: Drill the Mounting Holes on Dead front
A drilling template is provided to ensure proper alignment
of the interlock
1. Locate dead front removed earlier in Step 1.
2. Insert the folds of the template in the knockout of 4-
pole main breaker and slide towards the branch
breaker knockouts until it ceases to slide further (see
Figure 2).
3. Drill the pilot holes through the two identified holes in
the template using a 3/32” (0.093”) drill bit.
4. Remove the drill template and re-drill the two pilot
holes with ¼” (0.250”) drill bit.
5. Remove any burrs resulting from drilling the holes.
Figure 2: Mounting Hole Template
Step 3: Mounting the Interlock
1. Place the interlock on the front side of the dead front,
over the mounting holes drilled in Step 2.
2. Mount the interlock using the screws, washers, lock
washers and nuts provided in the kit (see Figure 3).
Tighten to 45 lbs-in (5 N-m).
3. Make sure both the 2-pole main and the 2-pole back-
fed main breakers are in the OFF position before
installing the dead front.
2-Pole
Main Breaker
Back-fed
Main Breaker
Interior
Branch
Breaker
Mounting
Nuts
Retainer
2-Pole
Main Breaker
Back-fed
Main Breaker
Interior
Branch
Breaker
Mounting
Nuts
Retainer
Holes
Template
Folds
Dead
front
Holes
Template
Folds
Dead
front
DEH 41153 Generator Interlock Kit Installation Instructions R03
WARNING: Hazard of electrical shock or burn
Turn off power supplying this equipment before working inside
GE Energy

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4. Apply critical load stickers next to appropriate branch
breakers for generator loads.
Figure 3: Interlock Installation
Interlock Operation
To energize the panel from Generator Power:
1. Turn OFF the 2-pole main breaker
2. Turn OFF all the branch circuit breakers
3. Move the sliding plate on the interlock towards branch
breakers using the tabs provided
4. Turn ON the 2-pole back-fed main breaker
5. Turn ON the branch circuit breakers supplying critical
circuits
To energize the panel from Utility Power:
1. Turn OFF the 2-pole back-fed main breaker
2. Turn OFF all branch circuit breakers
3. Move the sliding plate on the interlock towards branch
breakers using the tabs provided
4. Turn ON the 2-pole main breaker
5. Turn ON the branch circuit breakers
General Electric Company
41 Woodford Ave., Plainville, CT 06062
DEH41153 R03 © 2012 General Electric Company
These instructions do not cover all details or variations in equipment nor do they provide for every possible contingency that may be met in
connection with installation, operation, or maintenance. Should further information be desired or should particular problems arise that are not
covered sufficiently for the purchaser’s purposes, the matter should be referred to the GE Company.
GE Energy
Screws
Lock washer
Nut
Interlock
Dead front
Washer