Installation Instructions
© 2012—2014 Schneider Electric All Rights Reserved
S1B33894
Rev. 02, 05/2014
Replaces S1B33894 Rev. 01, 03/2014
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 or CSA Z462.
• 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
2in. B-200
2-1/2 in. B-250
Figure 1: Removing the Knockouts
Released for Manufacturing
Printed on 2016/06/21