![]() ![]() (3) Cable (a) A stranded conductor (single-conductor cable) or (b) a combination of conductors insulated from one another (multiconductor cable). If used as a wire, for example in winding inductance coils or magnets, it is referred to as a stranded wire, and not a cable. Again, there is no sharp dividing line of size between a stranded wire, a cord, or a cable. If such a filament is subdivided into several smaller filaments or strands and is used as a single wire, it is called a stranded wire. A wire has been defined as a slender rod or filament of drawn metal. (2) Stranded Wire - A group of small wires used as a single wire. ![]() In general, a cord usually consists of stranded conductors. There is no sharp dividing line in respect to size between a cord and a cable and, likewise, no sharp dividing line in respect to the character of insulation between a cord and a stranded wire. (1) Cord - A cord is a small cable, very flexible and insulated to withstand a certain amount of wear. Starting with your request for definitions: "It seems to me that 1926.401(j)(2) requires the use of heavy duty electric cords for temporary lighting where "unauthorized" workers must work within arm's length of lighting strings-is this a correct interpretation? If it is a correct interpretation, then why is it not being enforced by OSHA compliance personnel?" What is your interpretation of cord? Is "Romex" type cable considered to be a cord? Lighting Strings using "Romex" type conductors. Open Wiring such as McGill "String-O-Lights". 1926.401(j)(2) - In a multi-story building or other building where a number of different crafts, pipefitters, sheet metal workers, fireproofers, etc., must work within arm's length of temporary lighting, please advise if the following is permitted:Ī. Unauthorized Personnel - Personnel who are not familiar with the construction, operation and hazards of operation relative to equipment, electrical systems, or other activities which they are not expected or authorized to perform, operate or construct. As applied to equipment, electrical vaults, etc., inaccessible means guarded by barriers, locked doors or gates, or other equivalent means.Ĭ. Inaccessible - Applied to wiring methods, inaccessible means not capable of being removed or exposed without damaging the building structure or finish of the building. Open wiring as now used refers to the individual conductors being physically separated as in the McGill "String-O-Lights", and being run exterior to the walls, ceilings, structure.ī. They were supported on porcelain insulators of either the knob or the cleat type. Open Wiring - True open wiring was an older method of installing interior wiring in which the wires were run exposed on the ceiling, roof structure, or walls. ![]() As applied to 1926.401(i) what is the interpretation of:Ī. In brief what this is saying is that the provisions and requirements of the references shall be followed except where Subpart K specifically negates a provision/requirement of the codes (NEC/NFPA). ![]() 1926.400(a) - Is this section saying that when there are specific requirements provided by the Construction Standards 1926, they take precedence over requirements provided by the NEC, NFPA and ANSI?ġ926.400(a) specifically references the NEC, NFPA 70-1971 and ANSI C1-1971 unless otherwise provided by regulations of this part (Subpart K of the 1926 Standards). Thank you for your recent inquiry requesting our interpretations of specific construction safety and health standards pertaining to the electrical trades.Īfter researching your questions in depth, the following interpretations are offered to help you in your efforts to provide a safe and healthful workplace: ![]()
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