Instructions / Assembly

ManualsBrandsSquare D ManualsBreaker BoxesQO 225 Amp 42-Space 42-Circuit 3-Phase Main Lug Load Center with Ground Bar

40269-469-02

03/2006

Lexington, KY, USA

Replaces 40269-469-01 03/1983

Instruction Bulletin

Circuit Breaker Load Centers

Retain for future use.

INSTALLATION

Remove Knockouts

1. Turn off all power supplying this equipment before working on or inside

equipment.

2. Drive center knockout inward and alternately pry up or drive in outer rings,

one at a time.

Mount Box

Position box so marking is up for top feed and down for bottom feed.

Pull Conductors Into Box

NOTE: Conductors must enter the box through approved wire clamps, conduit

bushing or by other methods approved for the purpose, to prevent damage to

conductor insulation.

Figure 1: Wire Mains and Neutral

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.

Line

Main Lugs (125 A Max.) Main Circuit Breaker (125 A Max.)

Main Lugs (225 A Max.)

Main Circuit Breaker (225 A Max.)

40269-469-02.fm Page 1 Thursday, April 20, 2006 9:23 AM

Summary of content (4 pages)

PAGE 1
40269-469-02.fm Page 1 Thursday, April 20, 2006 9:23 AM 40269-469-02 03/2006 Lexington, KY, USA Instruction Bulletin QO® Circuit Breaker Load Centers Replaces 40269-469-01 03/1983 Retain for future use. INSTALLATION 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.
PAGE 2
40269-469-02.fm Page 2 Thursday, April 20, 2006 9:23 AM QO® Circuit Breaker Load Centers Instruction Bulletin 40269-469-02 03/2006 INSTALLATION AND WIRING BRANCH CIRCUIT BREAKERS WARNING HAZARD OF EQUIPMENT DAMAGE • This equipment is designed and tested by Square D® to performance levels which exceed Underwriter’s Laboratories Standards. • Use of other than Square D® circuit breakers may adversely affect user safety and impair reliability.
PAGE 3
40269-469-02.fm Page 3 Thursday, April 20, 2006 9:23 AM QO® Circuit Breaker Load Centers Instruction Bulletin 40269-469-02 03/2006 INSTALLATION FOR QOT CIRCUIT BREAKERS NOTE: Square D® Class CTL load centers are designed to restrict the installation of more overcurrent devices than that number for which each was designed, rated and approved. To accomplish this, the mounting means for QOT® circuit breakers is different from QO® and Q1® circuit breakers.
PAGE 4
0269-469-02.fm Page 4 Thursday, April 20, 2006 9:23 AM QO® Circuit Breaker Load Centers Instruction Bulletin 40269-469-02 03/2006 REMOVE COVER TWISTOUTS CAUTION HAZARD OF EQUIPMENT DAMAGE Remove main circuit breaker twistout only when main circuit breaker is installed. Close unused circuit breaker openings with filler plates. Failure to follow this instruction will result in equipment damage.