Electrical cord management

Source excerpt

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ - (x) You must protect flexible cords and cables from accidental damage, as might be caused, for example, by sharp corners, projections, and doorways or other pinch points. - (xi) You must support cable assemblies and flexible cords and cables in place at intervals that ensure that they will be protected from physical damage. Support must be in the form of staples, cables ties, straps, or similar type fittings installed so as not to cause damage. ## (c) Cable trays . - (i) Only the following wiring methods may be installed in cable tray systems: Armored cable; electrical metallic tubing; electrical nonmetallic tubing; fire alarm cables; flexible metal conduit; flexible metallic tubing; instrumentation tray cable; intermediate metal conduit; liquid tight flexible metal conduit; liquid tight flexible nonmetallic conduit; metal-clad cable; mineral-insulated, metalsheathed cable; multiconductor service entrance cable; multiconductor underground feeder and branchcircuit cable; multipurpose and communications cables; nonmetallic sheathed cable; power and control tray cable; power-limited tray cable; optical fiber cables; and other factory-assembled, multiconductor control, signal, or power cables that are specifically approved for installation in cable trays, rigid metal conduit, and rigid nonmetallic conduit. - (ii) In industrial establishments where conditions of maintenance and supervision assure that only qualified persons will service the installed cable tray system, the following cables may also be installed in ladder, ventilated-trough, or ventilated channel cable trays: - (A) Single conductor cable; the cable must be No. 1/0 or larger and must be of a type listed and marked on the surface for use in cable trays; where Nos. 1/0 through 4/0 single conduct…

Source excerpt

Division 2 Oregon Administrative Rules Oregon Occupational Safety and Health Division - (i) Employees' hands may not be wet when plugging and unplugging flexible cords and cord- and plug-connected equipment, if energized equipment is involved. - (ii) Energized plug and receptacle connections may be handled only with insulating protective equipment if the condition of the connection could provide a conducting path to the employee's hand (if, for example, a cord connector is wet from being immersed in water). - (iii) Locking-type connectors shall be properly secured after connection. - (b) Electric power and lighting circuits. - (1) Routine opening and closing of circuits. Load rated switches, circuit breakers, or other devices specifically designed as disconnecting means shall be used for the opening, reversing, or closing of circuits under load conditions. Cable connectors not of the load-break type, fuses, terminal lugs, and cable splice connections may not be used for such purposes, except in an emergency. - (2) Reclosing circuits after protective device operation. After a circuit is deenergized by a circuit protective device, the circuit may not be manually reenergized until it has been determined that the equipment and circuit can be safely energized. The repetitive manual reclosing of circuit breakers or reenergizing circuits through replaced fuses is prohibited. - Note: When it can be determined from the design of the circuit and the overcurrent devices involved that the automatic operation of a device was caused by an overload rather than a fault condition, no examination of the circuit or connected equipment is needed before the circuit is reenergized. - (3) Overcurrent protection modification. Overcurrent protection of circuits and conductors may not be modified, even on a temporary basis, beyond that allowed by 1910.304(e), the installation safety requirements for overcurrent protection. - (c) Test instruments and equipment. - (1) Use. Only qualified pe…

Source excerpt

Oregon Occupational Safety and Health Division Division 2 - (i) Portable cord- and plug-connected equipment and flexible cord sets (extension cords) shall be visually inspected before use on any shift for external defects (such as loose parts, deformed and missing pins, or damage to outer jacket or insulation) and for evidence of possible internal damage (such as pinched or crushed outer jacket). Cord- and plug-connected equipment and flexible cord sets (extension cords) which remain connected once they are put in place and are not exposed to damage need not by visually inspected until they are relocated. - (ii) If there is a defect or evidence of damage that might expose an employee to injury, the defective or damaged item shall be removed from service, and no employee may use it until repairs and tests necessary to render the equipment safe have been made. - (iii) When an attachment plug is to be connected to a receptacle (including any on a cord set), the relationship of the plug and receptacle contacts shall first be checked to ensure that they are of proper mating configurations. - (3) Grounding-type equipment. - (i) A flexible cord used with grounding-type equipment shall contain an equipment grounding conductor. - (ii) Attachment plugs and receptacles may not be connected or altered in a manner which would prevent proper continuity of the equipment grounding conductor at the point where plugs are attached to receptacles. Additionally, these devices may not be altered to allow the grounding pole of a plug to be inserted into slots intended for connection to the current-carrying conductors. - (iii) Adapters which interrupt the continuity of the equipment grounding connection may not be used. - (4) Conductive work locations. Portable electric equipment and flexible cords used in highly conductive work locations (such as those inundated with water or other conductive liquids), or in job locations where employees are likely to contact water or conductive liquids…

Source excerpt

Division 2 Oregon Administrative Rules Oregon Occupational Safety and Health Division - (7) Portable ladders. Portable ladders shall have nonconductive siderails if they are used where the employee or the ladder could contact exposed energized parts. - (8) Conductive apparel. Conductive articles of jewelry and clothing (such as watch bands, bracelets, rings, key chains, necklaces, metalized aprons, cloth with conductive thread, or metal headgear) may not be worn if they might contact exposed energized parts. However, such articles may be worn if they are rendered nonconductive by covering, wrapping, or other insulating means. - (9) Housekeeping duties. Where live parts present an electrical contact hazard, employees may not perform housekeeping duties at such close distances to the parts that there is a possibility of contact, unless adequate safeguards (such as insulating equipment or barriers) are provided. Electrically conductive cleaning materials (including conductive solids such as steel wool, metalized cloth, and silicon carbide, as well as conductive liquid solutions) may not be used in proximity to energized parts unless procedures are followed which will prevent electrical contact. - (10) Interlocks. Only a qualified person following the requirements of paragraph (c) of this section may defeat an electrical safety interlock, and then only temporarily while he or she is working on the equipment. The interlock system shall be returned to its operable condition when this work is completed. [55 FR [redacted postal code], Aug. 6, 1990; 55 FR [redacted postal code], Nov. 1, 1990, as amended at 59 FR 4476, Jan. 31, 1994] Stat. Auth.: ORS 654.025(2) and 656.726(4). Stats. Implemented: ORS 654.001 through 654.295. Hist: OR-OSHA Admin. Order 2-1991, f. 2/4/91, ef. 4/1/91. OR-OSHA Admin. Order 3-1994, f. 8/1/94, ef. 8/1/94. OR-OSHA Admin. Order 4-2007, f. 8/15/07, ef. 8/15/07. ## 1910.334 Use of Equipment - (a) Portable electric equipment. This paragraph appl…