Rubber insulating blankets, matting, covers, line hose, gloves and sleeves must be made and marked as the section requires: blankets, gloves and sleeves by a seamless process; each item marked with its class (00, 0, 1, 2, 3 or 4) and Type I (not ozone resistant) or Type II (ozone resistant), with nonconducting markings that do not impair insulation and, on gloves, only on the cuff. Equipment must withstand the Table E-1 ac proof-test voltage or the Table E-2 dc one (applied for 3 minutes, or 1 minute for matting), gloves must pass the ac proof test again after a 16-hour water soak, ac proof-test current on gloves may not exceed the Table E-1 limits (by no more than 2 mA after the soak), equipment that has had a breakdown test may not be used, and Type II material must pass an ozone test; equipment must be free of irregularities that affect insulation. Other insulating equipment must withstand the voltages that may be imposed on it, including transient overvoltages, and primary insulation equipment must pass a current test drawing no more than 1 microampere for each kilovolt of applied phase-to-phase voltage. In service, electrical protective equipment is kept safe and reliable: maximum use voltages follow Table E-4; equipment is checked for damage at the start of every day it is used and straight after any incident that could have damaged it, with an air test for gloves; items with holes, tears, punctures, cuts, ozone cutting or checking, embedded objects, texture changes or other damaging defects may not be used, and items with other suspect defects go back for testing; equipment is cleaned as needed and stored away from light, temperature extremes, humidity, ozone and damaging substances. Protector gloves are worn over insulating gloves except in limited-use cases requiring high dexterity (Class 0 gloves; Class 00 gloves at no more than 250 V ac or 375 V dc; or any class one class higher than needed where the employer shows damage is unlikely), and gloves used without protectors are retested before reuse. Periodic electrical tests follow Tables E-4 and E-5 (gloves on first issue and at 6-month intervals after that; blankets and sleeves on first issue and at 12-month intervals; line hose and covers after repair and whenever their insulating value is in doubt; equipment not issued within 12 months of its last test must be retested before service). Failed equipment may not be used, except shortened line hose, blankets cut down to at least 560 mm by 560 mm (22 by 22 inches) for Classes 1 to 4, and compatible patch repairs to blankets, gloves (only between the wrist and the reinforced cuff edge) and sleeves; repaired items are retested before use. The employer certifies the tests, identifying the equipment and test date, and makes the certification available to OSHA and to employees or their representatives.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.