ANSI UL 458 - Page 32

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UL COPYRIGHTED MATERIAL –

NOT AUTHORIZED FOR FURTHER REPRODUCTION OR

DISTRIBUTION WITHOUT PERMISSION FROM UL

Table 11.1

Knockout or hole sizes and dimensions of bushings

Table 6.2 relocated as Table 11.1 October 15, 2004

Bushing dimensions

Trade size of conduit Knockout or hole diameter Overall diameter Height

Inches Inches (mm) Inches (mm) Inches (mm)

1/2 7/8 (22.2) 1 (25.4) 3/8 (9.5)

3/4 1-3/32 (27.8) 1-15/16 (31.4) 27/64 (10.7)

1 1-23/64 (34.5) 1-19/32 (40.5) 33/64 (13.1)

1-1/4 1-23/32 (43.7) 1-15/16 (49.2) 9/16 (14.3)

1-1/2 1-31/32 (50.0) 2-13/64 (56.0) 19/32 (15.1)

2 2-15/32 (62.7) 2-45/64 (68.7) 5/8 (15.9)

2-1/2 3 (76.2) 3-7/32 (81.8) 3/4 (19.1)

3 3-5/8 (92.1) 3-7/8 (98.4) 13/16 (20.6)

3-1/2 4-1/8 (104.8) 4-7/16 (112.7) 15/16 (23.8)

4 4-5/8 (117.5) 4-31/32 (126.2) 1 (25.4)

4-1/2 5-1/8 (130.2) 5-35/64 (140.9) 1-1/16 (27.0)

5 5-5/8 (142.9) 6-7/32 (158.0) 1-3/16 (30.2)

6 6-3/4 (171.5) 7-7/32 (183.4) 1-1/4 (31.8)

11.1.1.4 A ﬁeld-wiring compartment in which power-supply connections are to be made shall be located

so that the connections may be readily inspected after the converter or inverter is installed as intended.

11.1.1.4 effective April 13, 1993

11.1.1.5 Wire connections in a ﬂush-mounted converter may be accessible upon removal of a front panel

from the base of the enclosure.

11.1.1.6 A ﬁeld-wiring compartment intended for connection of a wiring system shall be attached to the

converter or inverter so that it will be prevented from turning.

11.1.1.6 effective April 13, 1993

11.1.1.7 If a separate ﬁeld-wiring compartment is not provided, space for ﬁeld-wiring connections shall be

located near the connecting means and shall permit routing of the wiring away from live parts and rough

metal. See 11.1.1.4.

11.1.1.8 A ﬁeld-wiring compartment shall be constructed so that wiring is protected from:

a) Sharp edges, including screw threads, burrs, ﬁns, and the like that may abrade the insulation

on conductors or otherwise damage the wiring;

b) Terminals; and

c) Other live parts.

OCTOBER 15, 2004UL 45822