UL 482 Standard For Portable Sun/Heat Lamps

26.4 With the attachment plug securely held by the blades, the pull is to be applied for 1 minute to the flexible cord, in a direction perpendicular to the plane of the cord-entry hole. The results of the test are not acceptable if any cord conductor is detached from its terminal in the plug.

27.1 To determine if a pressure sensitive label or a label secured by cement or adhesive is of a permanent nature, representative samples that have been subjected to the tests outlined in paragraphs 27.2—27.5 shall meet the following conditions:

A. Each label shall demonstrate good adhesion and the edges shall not be curled.

B. The label shall resist defacement or removal as demonstrated by scraping across the test panel with a flat metal blade 1/32 inch (0.8 mm) thick, held at a right angle to the test panel.

C. The printing shall be legible and shall not be defaced by rubbing with thumb or finger pressure.

27.2 For each of the two types of conditioning mentioned in paragraphs 27.3 and 27.5, three samples of the label are to be applied to the same test surface as anticipated in the intended application. The labels are to be applied to the test surface not less than 24 hours prior to testing.

27.3 Three samples of the labels are to be evaluated as received.

27.4 Evaluation of samples at the end of the test as indicated in paragraph 27.5 is to be made (1) immediately following removal from the test medium, and (2) after exposure to room temperature for 24 hours following removal from the test medium.

27.5 Three samples of the labels under test are to be placed in a full-draft circulating-air oven maintained at the temperature indicated in Table 27.1 for 240 hours.