Ohio Residential Electrical Code Effective 4-15-24

4101:8-34-01 Electrical.

[Comment: When a reference is made within this rule to a federal statutory provision, an industry consensus standard, or any other technical publication, the specific date and title of the publication as well as the name and address of the promulgating agency are listed in rule 4101:8-44-01 of the Administrative Code. The application of the referenced standards shall be limited and as prescribed in section 102.5 of rule 4101:8-1-01 of the Administrative Code.]

SECTION 3401 ELECTRICAL

3401.1 Electrical. The provisions of the National Electrical Code, NFPA 70, shall be incorporated herein and shall govern the installation, testing and operation of the electrical systems of one-, two- and three-family dwellings and their accessory structures including the amendments (1) through (8) listed below.

For the purposes of this Chapter, any reference in NFPA 70 to “one- and two- family dwellings” will include “one-, two- and three-family dwellings.” Where the NFPA 70 requirement identifies a one-family dwelling or a two-family dwelling, a three-family dwelling is regulated as a “multi-family dwelling” (i.e. Section 210.52(E)(1)).

1. 1. Section 210.8(A)(2) shall be modified to read:
      • (A) Dwelling units. All 125-volt, single phase, 15- and 20-ampere receptacles installed in locations specified in 210.8(A)(1) through (A)(12) are to have ground-fault circuit-interrupter protection for personnel.
   2. Modify Section 210.8(A)(2) shall be modified to read:
      • (2) Garages, and also accessory buildings that have a floor located at or below grade level not intended as habitable rooms and limited to storage areas, work areas, and areas of similar use except for the receptacle located to serve a garage door opener when the device is a single receptacle and located in the ceiling.
   3. Add Exception (5) under Section 210.8(A)(5) shall be modified to read:
      • Exception No 5: A single receptacle located to serve a sump pump shall not be required to have ground-fault circuit-interrupter protection when there is a duplex receptacle with ground-fault circuit-interrupter protection within six (6) feet of the sump pump.
   4. Modify Section 210.8(F) to read:
      • (F) Outdoor Outlets. All outdoor outlets for dwellings, other than those covered in 210.8(A), Exception No. 1, garages with floor level at or below grade, accessory buildings and boathouses, where the outlets are supplied by single-phase branch circuits rated 150 volts or less to ground, and 50 amperes or less, are to be provided with ground-fault circuit-interrupter protection for personnel.
      • If equipment supplied by an outlet covered under the requirements of this section is replaced, the outlet is to be supplied with GFCI protection.
      • Exception No. 1: GFCI protection is not required on lighting outlets other than those covered in 210.8(C
      • Exception No. 2: GFCI protection is not required for listed HVAC equipment.
   5. Modify Section 215.18(A) to read:
      • (A) Surge-Protection Device. Where provided as part of feeder supplies for the dwelling or dwelling unit, a surge-protection device (SPD) is to be installed in accordance with this section./li>
   6. Modify 225.42(A) to read:
   • (A) Surge-Protection Device. Where provided as part of feeder supplies for the dwelling or dwelling unit, a surge-protection device (SPD) is to be installed in accordance with this section.
   7. Modify Section 230.67(A) to read:
   • a. Surge-Protection Device. Where provided as part of the service supplying the dwelling or dwelling unit, surge-protection devices (SPD) are to be installed in accordance with this section.
     /li>
   8. Delete Item (6) Sump Pumps under Section 422.5.

   SECTION 3402 EMERGENCY AND STANDBY POWER SYSTEMS

   • 3402.1 Installation. Emergency and standby power systems shall be installed in accordance with this code and NFPA 70. The performance, classification, transfer, testing, and maintenance of emergency and standby power systems shall also comply with either NFPA 110 (liquid- and gas- fueled systems) or NFPA 111 (battery and inertia systems), as applicable.
     • 3402.1.1 Stationary generators. Stationary emergency and standby power generator assemblies shall be listed in accordance with UL 2200.
       • 3402.1.1.1 Engine-driven generators. The installation of liquid- and gas- fueled stationary internal combustion engines and gas turbines used to drive generator assemblies shall meet the requirements of NFPA 37.
         • 3402.1.1.1.1 Fuel tanks connected to generator assemblies. Fuel tanks piped to and supplying fuel for engine-driven generator assemblies may be engine-mounted, located inside of a building, outside of a building, or on a roof in accordance with NFPA 37 or NFPA 30.
           • 3402.1.1.1.1.1 Engine-mounted tanks. Engine-mounted tanks located outdoors may be located in accordance with Section 4.1.4 of NFPA 37 and shall be vented in accordance with NFPA 30. Engine-mounted tanks shall be provided with adequate clearance to enable filling, maintenance, and testing, shall be safeguarded against public access, and shall be protected from impact.
           • 3402.1.1.1.1.2 Other fuel tanks. Fuel tanks, other than engine- mounted tanks, piped to and supplying the generator engine shall be located, installed, and vented in accordance with the applicable sections of NFPA 37 or located, installed, and vented in accordance with NFPA 30.
         • 3402.1.1.1.2 Gaseous fuel supply. Where an internal combustion engine supplied with gaseous fuel powers emergency or standby generators, the fuel gas storage and piping system shall comply with NFPA 37 and Chapter 24.