All wiring shall be in compliance with the latest publication of the National Electric Code.

    A.    Aluminum wiring shall not be permitted in any installation within the city of Columbia.

    1.    Exception No. 1. Shall be permitted for feeders in outbuildings only at the discretion of the electrical inspector.

    B.    Number of Receptacles and Wire Size. Receptacles in kitchen, dining and utility areas shall be wired with at least No. 12 wire and not more than four outlets per circuit. Any one dishwasher, refrigerator, microwave, or central vacuum system shall be on separate circuits. All other wiring shall be at least No. 12 wire and not more than twelve (12) outlets per circuit.

    1.    Exception No. 1. When it is a part of an approved cable assemblage, the ground conductor may be sized as required by the most current edition of the National Electric Code.

    2.    Exception No. 2. Where adequate mechanical protection is provided, any adequate ground conductor.

    3.    Exception No. 3. For installation as low voltage conductor where the voltage does not exceed fifty (50) volts between conductors, or to ground.

    4.    Exception No. 4. For control wiring only, as permitted by the National Electrical Code, current edition, however, this exception is not to be construed to include switch legs or circuits over fifty (50) volts.

    C.    Dryer, Range, Oven and Countertop. An electric range may be wired with a minimum conductor #8-3 with ground. When the range and oven are separate, the range top must be wired with #8-3 with ground and the oven shall be wired with #10-3 with ground. Dryers shall be wired with #10-3 with ground.

    D.    Smoke Detectors. Smoke detectors are to be installed according to the BOCA Code and wired according to the city of Columbia Electric Code. A copy of the section of the BOCA Code entitled "Single and Multiple-Station Smoke Detectors" is included as part of the city of Columbia electric code.

    E.    Additional Load on Existing Service. It shall be the responsibility of the contractor or other authorized person adding additional circuits and/or equipment to existing services to determine beforehand if said service is of sufficient size and capacity to carry such additional load according to the rules established under other sections of this code, and, if not, it shall be unlawful to make the addition until the service has been increased to required size. (Ord. 1757 § 1, 1999: Ord. 1431 § 4, 1996)