SE Digest 178

QO™ Load Centers

QO Special Constructions, 1Ø Class 1130 / Refer to Catalog 1100CT0501

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1 LOAD CENTERS

QO Standard Load Center Main Lugs, Fixed Mains (1Ø3W—120/240 Vac Rainproof—UL Listed) Table 1.31: Fixed Main Lugs Rainproof Load Centers (Accepts Only QO Plug-on Circuit Breakers - Not compatible with QO Plug-on Neutral Circuit Breakers)

Main WireSize AWG/kcmil

Max. Tandem Circuit Breakers

Max. Single Pole Circuits [49]

Equipment Ground Bar Kit (Order Separately)

Mains Rating Spaces

BoxNo. [50]

Load Center Box and Interior

Al

Cu

Non-Metallic Enclosure Fixed Mains—Factory-installed Main Lugs—10 kA Short Circuit Current Rating 60A 2 4 2 QO24L60NRNM Metallic Enclosure Fixed Mains—Factory-installed Main Lugs—10 kA Short Circuit Current Rating 40A 2 2 0 QO2L40RB [51]

Factory-installed

14–4

14–4

1NM

R A I N P R O O F

12–6 12–3

14–6 14–4

PK3GTA1 PK4GTA PK7GTA PK7GTA PK7GTA PK7GTA

1R 1R 2R 2R 2R 2R 2R

QO24L70RB [51] QO612L100RB [52] QO612L100TRB [52] QO816L100RB [52]

70A

2 6 6 8 6 8

4

2 6 6 8 6 8

12 12 16 12 16

Factory-installed

100A

8–1

QO612L100RBCU [52] [53] QO816L100RBCU [52] [53]

QO148L125GRB [53]

PK7GTA Factory-included

125A

4

8

4

12–2/0

14–2/0

15R

Standard Load Center Main Breaker, Convertible Mains (1Ø3W—120/240 Vac Rainproof—UL Listed) Table 1.32: Convertible Main Breaker Load Centers (Accepts Only QO Plug-on Circuit Breakers - Not compatible with QO Plug-on Neutral Circuit Breakers) Mains Rating Spaces Max. Load Center Box and Interior Al Cu Equipment Ground Bar Kit (Order Separately) Single Pole Circuits [49]

Max. Tandem Circuit Breakers

BoxNo. [50]

Convertible Mains —Factory-installed Main Circuit Breaker with Feed-thru Lugs, 22 kA Short Circuit Current Rating Convertible to Main Lugs (See page 1-24 or Lower Amperage Main Circuit Breaker (See page 1-3) [54] , [55] QOM1 or QOM2 Main Circuit Breaker Frame Size—Copper Bus 125A 6 12 6 QO1612M125FTRB [56] 4–2/0

R A I N P R O O F

PK12GTA

3R

QO1816M150FTRB [56]

150A

8

16

8

4–250

PK15GTAL

4R

QO1816M200FTRB [56]

200A

8

16

8

4–250

PK15GTAL

4R

Above listings through 200 A mains rating meet Federal Specification W-P-115C as Type 1, Class 2.

[49] Maximum single pole branch circuits utilizing QO and/or QOT circuit breakers. [50] See page 1-34 or Indoor Enclosure Dimensions and Knockout Information, page 1-32 [51] Use 10 AWG maximum size wire for GFI and AFI circuit breakers. [52] 70 A Max. branch circuit breaker and 70 A max. back fed main circuit breaker. [53] Copper bus. [54] Side hinge door device; allow 1-1/4 in. on left side for door to open. [55] 22 k AIR main circuit breaker UL Listed for use ahead of QO, QOT, QO-GFI, QO-AFI, QO-EPD and QOPL 10 k AIR branch circuit breakers to permit their application on systems up to 22 kA [56] QO1612M125FTRB provided with QOM1 frame main circuit breaker. QO1816M150FTRB and QO1816M200FTRB provided with QOM2 frame main circuit breaker.

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