Technical Bulletin

Eaton
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Publication No. TD00302001E
February 2014
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respective owners.
Technical Data TD00302001E
Effective February 2014
3-Phase Loadcenter Program
Approximate Dimensions in Inches (mm)
Commercial Loadcenter Knockouts
NEMA Type 1 Indoor Commercial Enclosures
Knockouts for Box Sizes 19, 20, 22, 24
Code Diameter
A 0.50 (12.7) — — —
B 0.50 (12.7) 0.75 (19.1) — —
C 0.75 (19.1) 1.00 (25.4) 1.50 (38.1) —
D 1.50 (38.1) 2.00 (50.8) 2.50 (63.5) 3.00 (76.2)
E 2.00 (50.8) 2.50 (63.5) 3.00 (76.2) —
F 2.50 (63.5) 3.00 (76.2) 3.50 (88.9) —
NEMA Type 3R Outdoor Commercial Enclosures
Knockouts for Box Sizes 42, 43, 46, 47
Code Diameter
A 0.50 (12.7) — — —
B 0.50 (12.7) 0.75 (19.1) — —
C 0.75 (19.1) 1.00 (25.4) 1.25 (31.8) —
D 1.50 (38.1) 2.00 (50.8) 2.50 (63.5) —
E 2.00 (50.8) 2.50 (63.5) 3.00 (76.2) —
F 2.50 (63.5) 3.00 (76.2) 3.50 (88.9) —
G 1.25 (31.8) 1.50 (38.1) 2.00 (50.8) 2.50 (63.5)
H 3.25 (82.6) Sq. — —
Indoor Commercial Enclosures
Outdoor Commercial Enclosures
A
H
E
F
A
B B B
B B
C
D D D D
E
C
B
B
B
B
B
A
H
B B B
B B
C
E E E E
E
E
F
A
C
B
B
B
B
B
Box 19, 20
Box 22, 24
G
F
E E E
D D
C
B
B
B
B
B
A
HUB HUB
F
E
E E E
D D
C
B
B
B
B
B
A
HUB HUB
Box 42
Box 43, 46, 47