Square D Digest 179

NQ Panelboards—240 Vac, 48 Vdc

NQ Feed-through Lugs, Neutral Assemblies, & Factory Assembled Options

Online Refer to NQ Panelboards

www.se.com/us

Feed-through Lugs

Table 9.25: Feed-through Lugs Cabinet Data

Table 9.24: Feed-through Lugs Mains Rating

Box Height (20 in. W x 5.75 in. D)

Feed-Through Wire Range Per Phase (AWG or kcmil)

225A 250A

400A

600A

100A 225A 400A 600A

one #6-2/0 Al or Cu one #6–350 Al or Cu

Max. No. ofBranch Spaces

Main Circuit Break er [101]

Main Circuit Breaker

Main Circuit Breaker

Main Lugs

Main Lugs

Main Lugs

one 1/0–750 or two 1/0–350 Al or Cu

two 1/0–750 Al or Cu

9 PANELBOARDS

30 42 72 84

38 38 50 56

50 50 62 68

50 56 68 68

62 68 80 80

62 62 74 80

68 80 — —

Table 9.27: Copper Bus Bars Copper Bus Bars 100 A, 225 A, 250 A

Table 9.26: Name Plates Name Plates

Standard white face/black letter laminated bakelite, 1 in. x 3.5 in., adhesive backed or screw mountable with screws in a bag assembly

400A 600A

Table 9.28: NQ Panelboard Neutral Assembly Options

Without Sub-Feed or Thru-Feed Lugs

With Sub-Feed or Thru-Feed Lugs

Interior Rating

100% Neutrals

200% Neutrals

100% Neutrals

200% Neutrals

Copper NQN1CU NQN2CU NQN6CU

Copper

Copper NQN1CU NQN2CU NQN6CU

Copper

Aluminum

Aluminum

Aluminum

Aluminum

NQNL1

NQNL1 NQNL2 NQNL4

100A 225A 400A

Factory Assembled Only

Factory Assembled Only

NQNL2ACCY FAOnly [102] Not Available

Standard

Standard

600A [103]

Not Available

Not Available

Not Available

Table 9.29: NQ Main 100% and 200% Rated Neutral Conductors—(Quantity) and Wire Size (Mechanical Lugs & Compression Lugs) [104]

Mechanical Neutral Line Lugs

Compression Neutral Line Lugs

200%Rated [105]

100%Rated

200%Rated [105]

100%Rated

Standard Neutral Assemblies

Oversized Neutral Assemblies

Standard Neutral Assemblies Oversized Neutral Assemblies

Interior Rating Lug Material

Space Factor

Lug Wire Range Lug Wire Range Space Factor

Lug Wire Range Lug Wire Range

Lug Wire Range

Lug Wire Range

Al

select 225 A neutral assembly select 400 A neutral assembly (2) 1/0-750 kcmil or (4) 1/0-300 kcmil (4) 1/0-700 kcmil [107] or (8) 1/0-300 kcmil (6) 1/0-750 kcmil or (4) 1/0-300 kcmil and (4) 1/0-750 kcmil

select 225 A neutral assembly select 400 A neutral assembly

(1) #6-2/0

(2) #6-2/0

(1) #6-2/0

(1) #6-2/0

100A

N/A

N/A

Cu

(1) #6-300 kcmil [106] (1) #6-250 kcmil (2) 1/0-300 kcmil or (1) 1/0-700 kcmil [107] (4) 1/0-300 kcmil or (2) 1/0-700 kcmil [107]

(2) #6-350 kcmil (2) #6-250 kcmil (4) 1/0-300 kcmil or (2) 1/0-700 kcmil [107]

(1) #4-300 kcmil (1) #2/0-300 kcmil (2) 2/0-500 kcmil

(2) #1/0-300

Al

225A

N/A

N/A

(2) #2/0-300 kcmil (4) 2/0-500 kcmil

Cu

Al

(4) 1/0-750 kcmil or (8) 1/0-300 kcmil

400A

6

6

(2) 400-750 kcmil

(2) 400-750 kcmil

Cu

Al

6

N/A

N/A

N/A (2) 2/0-500 kcmil

N/A

600A

Cu

Al

600A(with NQALMN6or NQCUMN6)

N/A

12

N/A

N/A

N/A

N/A

N/A

Cu NOTE: Implicit AWG (American Wire Gauge) abbreviation on conductors wire range (kcmil is shown). Gutter extensions may be required to provide NEC wire bending space for cable(s) of maximum lug size.

Table 9.30: NQ Panelboard Condo Riser Neutral Panelboards (Requires 26 in. Wide Enclosure) [108]

LoadEnd Options

Mains Options

Mini mum Enclo sure Depth

Neu tral Rat ing

Space Factor (inches) [109]

Maxi mum

Interi or Rating

Neutral Assembly

Sub Feed Brea ker H, J, Q, LA/ LH

Sub Feed Lugs

Feed Thru Lugs

Main Circuit Breaker

Branch Circuits

Main Lugs

100% NQN6CRUS 200% NQNL6CRUS 100% NFN6CR 200% NFNL6CR

5.75-in.

12

42

Y LA/LH N/A Y

400 / 600A

LA, LG, LH, LJ, LL

72 [110]

Y

Y Y

Y 8.75-in.

0–12

600 A NQ Main Breaker Panelboard with Condo Riser Neutral Assembly

[101] 8.75 in. deep box, ship fully assembled only. [102] FA - Factory Assembled Panelboards [103] 600 A main circuit breaker panelboards with PowerPacT L sub-feed circuit breakers are supplied with Condo Riser Neutral Assemblies and require 26 in. wide, 8.75 in. deep enclosures. [104] Lug Wire Ranges shown meet NEC wire bending space. Lugs may accept larger cables if enclosure size is increased. [105] 200% Neutrals not available on Column Width interiors. [106] Installation of 350 kcmil netural conductors possible is enclosure is extended to increase wire bending space. [107] Installation of 750 kcmil neutral conductors possible if enclosure is extended to increase wire bending space. [108] Select 26 in. Wide Condo Riser Panel under Structure Options in the SE Advantage Panelboard Product Selector. [109] Space factor is the additional enclosure length required for selected option. Additional required length may be reduced or eliminated if load end options like feed-thru lugs or sub-feed circuit breakers require a space factor of at least 12 inches. [110] May be used with a 84 circuit interior when a SurgeLoc SPD is installed. No more than 72 branch circuit breaker poles may be installed.

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