Installation Guide

1
40266-122-02
05/2005
Lexington, KY, USA
Replaces 40266-122-01 06/1966
Instruction Bulletin
CTL Load Centers
Retain for future use.
SAFETY PRECAUTIONS
REMOVING KNOCKOUTS
Square D
®
knockouts are designed to simplify the installation when
joining devices of different ratings. Conduit is a constant distance
from the wall—thus eliminating the need for offsets.
1. Remove knockouts one at a time, alternating inward and outward.
2. Remove the center knockout inward.
— Place screwdriver blade against point farthest from tie and
strike inward (A). Send back and forth to break tie.
3. Remove rings one at a time without straining remaining rings.
— Pry first ring outward with screwdriver midway between ties,
using pliers flat against box under screwdriver (B).
— Bend ring sections outward with pliers, then back and forth to
break ties (C).
— Remove second ring inward by striking screwdriver (with
blade against point midway between ties), then bending ring
sections inward and back and forth to break ties.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Apply appropriate personal protective equipment (PPE) and follow safe electrical
work practices. See NFPA 70E.
• This equipment must only be installed and serviced by qualified electrical personnel.
• Turn off all power supplying this equipment before working on or inside equipment.
• Always use a properly rated voltage sensing device to confirm power is off.
• Replace all devices, doors and covers before turning on power to this equipment.
Failure to follow these instructions will result in death or serious injury.
A
B
C
40266-122-02.fm Page 1 Tuesday, May 24, 2005 2:19 PM