Michigan Administrative Code
Department - Labor and Economic Opportunity
MIOSHA
General Industry and Construction Safety and Occupational Health Standards
Construction Safety and Health Standard
Part 17 - ELECTRICAL INSTALLATIONS
Section R. 408.41722 - Assured equipment grounding conductor program

Universal Citation: MI Admin Code R. 408.41722

Current through Vol. 24-16, September 15, 2024

Rule 1722.

(1) The employer shall establish and implement an assured equipment grounding conductor program for construction operations. The program shall cover all extension cords, receptacles which are not a part of the permanent wiring of the building or structure, and equipment connected by cord and plug which are available for use or used by employees.

(2) This program shall comply with the following minimum requirements:

(a) A written description of the program, including the specific procedures adopted by the employer, shall be available at the jobsite for inspection and copying by the director, department representative, and any affected employee.

(b) The employer shall designate 1 or more competent persons to implement the program.

(c) Each extension cord, attachment cap, plug and receptacle of cord sets, and any equipment connected by cord and plug, except extension cords and receptacles which are fixed and not exposed to damage, shall be visually inspected before each day's use for external defects, such as deformed or missing pins or insulation damage, and for indications of possible internal damage. Equipment found damaged or defective shall not be used until repaired.

(d) The following tests shall be performed on all extension cords, receptacles which are not a part of the permanent wiring of the building or structure, and cord and plug connected equipment required to be grounded:
(i) All equipment grounding conductors shall be tested for electrical continuity.

(ii) Each receptacle and attachment cap or plug shall be tested for correct attachment of the equipment grounding conductor. The equipment grounding conductor shall be connected to its proper terminal.

(e) All required tests shall be performed at the following time:
(i) Before first use.

(ii) Before equipment is returned to service following any repairs.

(iii) Before equipment is used after any incident which can be reasonably suspected to have caused damage, for example, when an extension cord is run over.

(iv) At intervals not exceeding 3 months, except that extension cords and receptacles which are fixed and not exposed to damage shall be tested at intervals not exceeding 6 months.

(f) The employer shall not make available, or permit the use by employees of, any equipment which does not meet the requirements of this rule.

(g) Tests performed as required in this rule shall be recorded. The test record shall identify each receptacle, extension cord, and cord and plug connected equipment that passed the test, and shall indicate the last date it was tested or the interval for which it was tested. This record shall be kept by means of logs, color coding, or other effective means, and shall be maintained until replaced by a more current record. The record shall be made available at the jobsite for inspection by the director, department representative, and any affected employee.

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