UL 935:2001 pdf download – Fluorescent-Lamp Ballasts.
13.4 Bushings
13.4.1 A bushing shall be provided where a lead wire or flexible cord enters the enclosure of a ballast, and shall protect the insulation on the lead or flexible cord from damage.
13.4.2 An insulating bushing employed in a ballast intended for outdoor use shall be made of non-absorptive material. Polymeric matenals shall have a flammability resistance rating of at least V-2 and a temperature rating exceeding the temperature found in Normal Temperature Test, Section 25.
13.4.3 A smooth metal grommet. a tumed•over punched hole in a sheet-metal enclosure, an insulating bushing securely held in place, or a smooth hole in an end piece of insulating material meets the intent of providing a bushing where a lead enters the enclosure.
13.4.4 An insulating bushing, not less than 1/16 Inch (1.6 mm) thick, shall be used where a flexible cord or lighter service than Type SV enters an enclosure.
13.5 Strain relief
13.5.1 Strain relief shall be provided on a lead wire or a flexible cord to resist stress on the lead wire or cord from being transmitted to the interior wiring or connections or to the terminals of the attachment plug. See the Strain-Relief Test, Section 39.
13.5.2 A lead wire or flexible cord that is embedded in compound inside the enclosure at the wire entrance is considered to be provided with the necessary strain relief.
13.6 Terminals
13.6.1 Wire binding screws or pressure-type terminals provided for field wiring terminals shall comply with
13.6.2—13.6.11.
13.6.2 A terminal intended for the connection of a grounded power-supply conductor as specified in item (a) of Table 22.1 shalt be:
a) A pressure-type wire connecting means identified by a plating substantially white in color (such as nickel);
b) Of a metal that is substantially white in color;
c) Otherwise colored white, marked with letters WH, ‘WHT, or COM”: or
d) Identified on an attached wiring diagram in some manner. For example, the location of the terminal on an attached diagram chrectly corresponds with the terminal location in the unit itself.
13.6.3 A terminal intended for the connection of the earth grounding supply conductor shall be identified by one of the following methods:
a) Identified by a plating substantially green in color;
b) A machine thread screw, at least 8-32 thread, with a hexagonal head, green in color; C) The word ground, the letters G. GND,” or GR, or the symbol in Figure 13.3;
13.4 Bushings
13.4.1 A bushing shall be provided where a lead wire or flexible cord enters the enclosure of a ballast, and shall protect the insulation on the lead or flexible cord from damage.
13.4.2 An insulating bushing employed in a ballast intended for outdoor use shall be made of non-absorptive material. Polymeric matenals shall have a flammability resistance rating of at least V-2 and a temperature rating exceeding the temperature found in Normal Temperature Test, Section 25.
13.4.3 A smooth metal grommet. a tumed•over punched hole in a sheet-metal enclosure, an insulating bushing securely held in place, or a smooth hole in an end piece of insulating material meets the intent of providing a bushing where a lead enters the enclosure.
13.4.4 An insulating bushing, not less than 1/16 Inch (1.6 mm) thick, shall be used where a flexible cord or lighter service than Type SV enters an enclosure.
13.5 Strain relief
13.5.1 Strain relief shall be provided on a lead wire or a flexible cord to resist stress on the lead wire or cord from being transmitted to the interior wiring or connections or to the terminals of the attachment plug. See the Strain-Relief Test, Section 39.
13.5.2 A lead wire or flexible cord that is embedded in compound inside the enclosure at the wire entrance is considered to be provided with the necessary strain relief.
13.6 Terminals
13.6.1 Wire binding screws or pressure-type terminals provided for field wiring terminals shall comply with
13.6.2—13.6.11.
13.6.2 A terminal intended for the connection of a grounded power-supply conductor as specified in item (a) of Table 22.1 shalt be:
a) A pressure-type wire connecting means identified by a plating substantially white in color (such as nickel);
b) Of a metal that is substantially white in color;
c) Otherwise colored white, marked with letters WH, ‘WHT, or COM”: or
d) Identified on an attached wiring diagram in some manner. For example, the location of the terminal on an attached diagram chrectly corresponds with the terminal location in the unit itself.
13.6.3 A terminal intended for the connection of the earth grounding supply conductor shall be identified by one of the following methods:
a) Identified by a plating substantially green in color;
b) A machine thread screw, at least 8-32 thread, with a hexagonal head, green in color; C) The word ground, the letters G. GND,” or GR, or the symbol in Figure 13.3.