SE Digest 178
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 9.26: Feed-through Lugs Cabinet Data
Table 9.25: 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 [82]
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 9.28: Copper Bus Bars Copper Bus Bars 100 A, 225 A, 250 A
Table 9.27: 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 9.29: NQ Panelboard Neutral Assembly Options
Without Sub-Feed or Thru-Feed Lugs
With Sub-Feed or Thru-Feed Lugs
Interior Rating
200% Neutrals [83]
200% Neutrals [83]
100% Neutrals
100% Neutrals
Copper
Copper
Copper
Copper
Aluminum
Aluminum
Aluminum
Aluminum
NQN1CU NQN2CU
NQNL1 NQNL2 NQNL4
NQN1CU NQN2CU
NQNL1
100A 225A 400A
Factory Assembled Only
Factory Assembled Only
NQNL2ACCY FAOnly [84]
Standard
Standard
Factory Assembled in 26" Wide Enclosure Only
Factory Assembled in 26" Wide Enclosure Only
NQN6CU
NQN6CU
600A [3]
Not Available
Not Available
Table 9.30: NQ Main 100% and 200% Rated Neutral Conductors—(Quantity) and Wire Size (Mechanical Lugs & Compression Lugs)
Mechanical Neutral Line Lugs
Compression Neutral Line Lugs
200%Rated [85][86]
100%Rated
200%Rated [85][86]
100%Rated
Standard Neutral Assemblies Neutral Lug Wire Range
Oversized Neutral Assemblies
Standard Neutral Assemblies Oversized Neutral Assemblies
Interior Rating Lug Material
Neutral Lug Wire Range select 225 A neutral assembly select 400 A neutral assembly
Neutral Lug Wire Range
Neutral Lug Wire Range select 225 A neutral assembly select 400 A neutral assembly
Neutral Lug Wire Range
Neutral Lug Wire Range
Space Factor
Space Factor
(1) #6-2/0 (1) #6-2/0
(2) #6-2/0 (2) #6-2/0
(1) #8-1/0 (1) #6-1/0
(2) #8-1/0 (2) #6-1/0 (2) #4-300
Al
100A
N/A
N/A
Cu
(1) #6-300 kcmil (1) #6-250 kcmil (2) 1/0-300 kcmil or (1) 1/0-750 [87] kcmil (4) 1/0-300 kcmil or (2) 1/0-750 [87] kcmil
(2) #6-300 kcmil (2) #6-250 kcmil (4) 1/0-300 kcmil or (2) 1/0-750 [87] kcmil
(1) #4-300 kcmil (1) #6 2/0-300 kcmil (2) 2/0-500 kcmil
Al
225A
N/A
N/A
(2) #6 2/0-300 kcmil (4) 2/0-500 kcmil
Cu
Al
(4) 1/0-750 kcmil or (8) 1/0-300 kcmil
(2) 1/0-750 kcmil or (4) 1/0-300 kcmil
6
6
400A
(2) 400-750 kcmil
(4) 400-750 kcmil
Cu
Al
(4) 1/0-750 kcmil or (8) 1/0-300 kcmil (2) 1/0-750 kcmil or (4) 1/0-300 kcmil
600A
6
N/A
N/A
N/A (2) 2/0-500 kcmil
N/A
Cu
600A(with NQALMN6or NQCUMN6)
Al
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). Neutral conductors must be of size and quantity per table above.
Table 9.31: Metal Directory Frames Metal Directory Frame Replaces standard plastic stick-on directory pouch, add "WMD" suffix to NC Trim catalog number. Table 9.32: NQ Equipment Ground Bar Kits [88] Interior Rating Aluminum Copper
Table 9.33: Hinged Door-in-Door Trims Hinged Door-in-Door Trim Hinged Door-in-Door Trim has piano hinge down one side. Inner door has a lock, outer door is retained with screws Hinged Door-in-Door with Outer Door Lock in place of screws
GroundBar Insulator Kit
PK12GTA, PK18GTA, PK23GTA, or PK27GTA
100A / 225A
PK27GTACU
PKGTAB
PK12GTA, PK27GTA PK27GTACU
400A / 600A
PKGTAB
[82] 8.75 in. deep box, ship fully assembled only. [83] 600 A main circuit breaker panelboards require an 8.75 in. deep, 26 in. wide box. [84] FA - Factory Assembled Panelboards [85] 200% Neutrals not available on Column Width interiors. [86] Panelboards with 200% rated neutrals are not available with 250 A J-frame main circuit breakers or integral lighting contactors. [87] Installation of 750 kcmil neutral conductors possible if enclosure length is extended. [88] One PK kit supplied when ground bar is specified. Two PK kits supplied when "extra" ground bar is ordered.
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