Installation Guide

© 2012 Schneider Electric All Rights Reserved
S1B33894
07/2012
Instruction Bulletin
QO™ and Homeline™ Load Centers
Installation
Class 1100
Retain for future use.
ENGLISH
™
Introduction
This bulletin contains instructions for the installation and operation of QO™ and Homeline™ load centers. It also
includes installation instructions for standard and tandem branch circuit breakers. See separate instruction
bulletins included with advanced function circuit breakers and accessories, when installed.
Preparation
1. Determine the wiring or conduit requirements for the main and branch circuits, as required by local electrical
codes.
2. Select the proper cable clamp, or use other approved methods for securing the cable or conduit to the
enclosure.
3. Remove the appropriate knockouts required for installation of cable clamps or conduit (Table 1). To remove
the knockouts, see Figure 1.
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.
• Do not allow petroleum-based paints, solvents, or sprays to contact the nonmetallic parts of this product.
• Before starting a wiring installation or addition, consult a local building or electrical inspector for current
National Electrical Code requirements. Local codes vary, but are adopted and enforced to promote safe
electrical installations. A permit may be needed to do electrical work, and some codes may require an
inspection of the electrical work.
• This equipment may not be suitable for use in corrosive environments present in agricultural buildings. See
NEC 547.
Failure to follow these instructions will result in death or serious injury.
Table 1: Bolt-On Conduit Hubs for
Outdoor Load Centers
Conduit Hub No.
3/4 in. B-075
1 in. B-100
1-1/4 in. B-125
1-1/2 in. B-150
2 in. B-200
2-1/2 in. B-250
Figure 1: Removing the Knockouts