UL 5C:2016 pdf download.Surface Raceways and Fittings for Use with Data,Signal, and Control Circuits.
11 Mounting
111 A raceway shall be povded with means for securing it to the mounting surface at intervals of not more than 4 ft (1.2 m). The securernent means shall consist of mounting hardware such as screws or bolts or an adhesive strip or other method determined to be acceptable
11.2 When the base is intended to be secured to the mounting surface by screws or bolts extendng from the inside, the arrangement shall not result in damage to the conductors. This shall be accomplished through the use of round-head or pan-head screws or bolts, or washers that serve to protect the head of the screw or bolt, or other means determined to be acceptable.
11.3 Mounting hardware such as screws or bolts shall either be packaged with the raceway, or the installation instructions packaged with the raceway or fittings shall specify the appropriate mounting means.
12 Covers
12.1 Provision shall be made for securing the cover to the base of a two-piece raceway at intervals of not more than 4 ft (1.2 m). A cover shall be held in place by continuous grooves. flanges, or similar construction which assures that the cover is securely fixed in place.
PERFORMANCE
13 General
13.1 Unless Otherwise specified, all tests are to be conducted at a room temperature of 23 ±59C (73 ±9°F).
14 SecurIty of Knockout and Break-Away Tab Test
14.1 A force of 10 lbf (44.5 N) is to be applied to a knockout or a break-away tab for 60 seconds by means of a 1.4-in (6.4.mm) diameter mandrel with a flat end. The force is to be applied with the mandrel’s flat end in a direction perpendicular to the plane of the knockout or break-away tab and at the point most prone to result in movement. The knockout or break-away tab shall remain in place and the clearance between the knockout or break-away tab and the opening shall not be more than 0.030 in (0.76 mm) when measured 60 minutes after the force has been removed.
111 A raceway shall be povded with means for securing it to the mounting surface at intervals of not more than 4 ft (1.2 m). The securernent means shall consist of mounting hardware such as screws or bolts or an adhesive strip or other method determined to be acceptable
11.2 When the base is intended to be secured to the mounting surface by screws or bolts extendng from the inside, the arrangement shall not result in damage to the conductors. This shall be accomplished through the use of round-head or pan-head screws or bolts, or washers that serve to protect the head of the screw or bolt, or other means determined to be acceptable.
11.3 Mounting hardware such as screws or bolts shall either be packaged with the raceway, or the installation instructions packaged with the raceway or fittings shall specify the appropriate mounting means.
12 Covers
12.1 Provision shall be made for securing the cover to the base of a two-piece raceway at intervals of not more than 4 ft (1.2 m). A cover shall be held in place by continuous grooves. flanges, or similar construction which assures that the cover is securely fixed in place.
PERFORMANCE
13 General
13.1 Unless Otherwise specified, all tests are to be conducted at a room temperature of 23 ±59C (73 ±9°F).
14 SecurIty of Knockout and Break-Away Tab Test
14.1 A force of 10 lbf (44.5 N) is to be applied to a knockout or a break-away tab for 60 seconds by means of a 1.4-in (6.4.mm) diameter mandrel with a flat end. The force is to be applied with the mandrel’s flat end in a direction perpendicular to the plane of the knockout or break-away tab and at the point most prone to result in movement. The knockout or break-away tab shall remain in place and the clearance between the knockout or break-away tab and the opening shall not be more than 0.030 in (0.76 mm) when measured 60 minutes after the force has been removed.
