Oregon has adopted the federal requirements for electrical safety in construction industry workplaces by reference. There are construction industry requirements for branch circuits that are stricter than federal rules (OAR 437-003-0404).
The Oregon Occupational Safety and Health Division (OR-OSHA) regulates safety and health in private and public sector workplaces in the state.
In addition to other requirements for equipment-grounding conductors, the construction electrical safety rule requires ground-fault circuit interrupters or an assured equipment-grounding conductor program.
All receptacles with 125-volt, single-phase, 15-, 20-, and 30-amperes, must have approved GFI. The GFI protection must be at the outlet end of the circuit. Portable extension cords or other devices with listed GFI protection are acceptable.
Written grounding conductor program. Receptacles with more than 125-volt, single-phase, 30-amperes must have the GFI protection or a written assured equipment-grounding conductor program. The written program must be available for review and copying by the administrator and any affected employee at the job site. A competent person must be designated to implement the program.
All extension cords and equipment are to be visually inspected daily before use. Do not use damaged or defective equipment.
Complete the following tests on all extension cords and equipment that are not part of the permanent wiring of the building or structure:
- Test all equipment-grounding conductors for continuity.
- Test each receptacle to assure the equipment-grounding conductor is connected to its proper terminal.
All tests are to be completed: