SE Digest 178

Panelboards

Panelboard Series Ratings

Refer to NQ Panelboards

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NQ Panelboards This page contains UL Tested and Certified series combination ratings for panelboards. These ratings apply to either an integral main located in the same enclosure or a remote main located in a separate enclosure.

Table 9.1: NQ Series Connected Circuit Breaker Ratings (RMS Symmetrical) Maximum System VoltageAC [1] Maximum Short Circuit Current Rating [2] Square D™ Brand Integral or Remote Main Circuit Breakers and Remote Main Fuses [3][4][5]

Square D™ Brand Branch Circuit Breaker Catalog Designation and Allowable Ampere Ranges Type [6][7][8] 1Pole 2Pole

9 PANELBOARDS

3Pole

QO(B) QO(B)

15–30A 15–70A 15–30A 15–30A 15–30A 15–20A 15–20A 15–20A 15–70A 15–30A 15–30A 15–30A 15–20A 15–20A 15–20A 15–70A 15–30A 15–30A 15–20A 15–20A 15–20A 15–70A 15–30A 15–30A 15–30A 15–20A 15–20A 15–20A 15–30A 15–70A 15–70A 15–30A 15–30A 15–20A 15–20A 15–20A 15–70A 15–30A 15–30A 15–20A 15–20A 15–20A 15–70A 15–30A 15–30A 15–30A 15–20A 15–20A 15–20A 15–70A 15–30A 15–30A 15–30A 15–20A 15–20A 15–20A — — — — — —

15–30A 15–125A 15–60A 15–60A 15–60A

— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —

18,000

LA / LH

QO(B)GFI QO(B) EPD QO(B) PL QO(B) AFI QO(B)CAFI QO(B)DF QOB-VH QO(B) PL QO(B)GFI QO(B) EPD QO(B) AFI QO(B)CAFI QO(B)DF QO(B)GFI QO(B) EPD QO(B) AFI QO(B)CAFI QO(B)DF QOB-VH QO(B) PL QO(B)GFI QO(B) EPD QO(B) AFI QO(B)CAFI QO(B)DF QO(B) VH QOB-VH QO(B)GFI QO(B) PL QO(B) AFI QO(B)CAFI QO(B)DF QO(B)GFI QO(B) EPD QO(B) EPE QO(B) AFI QO(B)CAFI QO(B)DF QOB-VH QO(B) PL QO(B)GFI QO(B) EPD QO(B) AFI QO(B)CAFI QO(B)DF QOB-VH QO(B) PL QO(B)GFI QO(B) EPD QO(B) AFI QO(B)CAFI QO(B)DF QO(B) QO(B) QO(B) QO(B) QO(B) QO(B) QO(B) QO(B)

QO (B) VH, QOB-VH

22,000

—

15–20A

—

15–125A

150A

15–60A 15–60A 15–60A

QD

—

15–20A

—

15–125A 15–60A 15–60A

25,000

ED

—

15–20A

—

15–125A

150A

15–60A 15–60A 15–60A

BD, HD, JD, LD

—

15–20A

—

120/240 1P/3W 208Y/120 3P/4W 240/120 3P/4W

42,000

15–30A 15–125A 15–125A

LA

150A

15–60A 15–60A

QG

—

15–20A

—

15–125A 15–60A 15–60A

65,000

EG

— —

15–20A

—

15–125A

150A

15–60A 15–60A 15–60A

BG, HG, JG, LG

—

15–20A

—

15–125A

150A

15–60A 15–60A 15–60A

100,000

QJ

—

15–20A

—

[1] Series Ratings listed at higher system voltages apply to lower system voltages (Example: 240 3P/3W covers 208Y/120 3P/4W). [2] Short Circuit tests are conducted at 100–105% of the maximum rated voltage of the panelboard. [3] Please consult the NQ/NQM Panelboards Information Manual (80043-712-06) for additional information, including series ratings with obsolete circuit breakers. [4] Where LG is shown, LJ and LL can be used. [5] Unless otherwise noted, main breakers can be applied at the maximum available amperage rating. [6] Suffixes HID, SWD, and SWN may also be applied to the applicable branch circuit breakers shown above. [7] Where QO(B) circuit breakers are shown above, QO(B)H, QO(B)VH, and QH(B) circuit breakers may also be used. [8] Two-pole CAFI circuit breakers cannot be used on 208Y/120V systems.

9-2

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