Ordinance 75-70 - Laserfiche WebLink

Section 6: ADDITIONAL REQUIREMENTS The following requirements shall be mandatory for the installation of all electric wiring and installation of electrical equipment from and after the date of the adoption of this ordinance, and shall be in addition to all requirements of codes herein adopted by reference. 1. All electrical wiring in all buildings, except single family dwellings, shall be installed in approved metal raceways. All residential buildings, except single family dwellings and excluding hotels and motels, located outside of Fire District #1 and #2 may be wired with non-metallic cable if all feeders and sub-feeders are enclosed in an approved metal raceway. EXCEPTION: Residential apartment of two (2) stories or less excluding hotels and motels outside Fire Zones #1 and #2, may be wired in accordance with Chapter 3 of the National Electric Code except all feeders must be installed in an approved metal raceway. Any basement with one or more apartments shall be considered a story. 2. All service entrance conductors shall be in approved metal raceway. 3. Service conductors, meter bases and service distribution panels must all have the same rating. 4. The neutral on the main service must be at least 70 per cent of the ampacity of the ungrounded conductors. Minimum size neutral on residential dwelling shall be at least a 70 ampere reading. 5. All main disconnects on services for grouped installations must be of the same physical size, 5 small individual service disconnects and one large service disconnect controlling several service panels will not be accepted to satisfy the 6th disconnect rule of Section 230. 70 of the National Electrial Code. 6. All service panels shall have at least two (2) full size spaces for future circuits after wiring is completed. 7. Except for large load centers, all service equipment including switches, gutters and sub-feed switches, shall be mounted not more than seven (7) feet, nor less than three (3) feet from the floor or permanent working platform. 8. All mast type services penetrating the roof of a building shall have an all lead flashing or other material approved for the purpose by the Electrical Inspector. Straps on service mast must be of heavy metal with galvanized plating. 9. Underground service of a direct burial installation shall be of minimum size of 200 amperes capacity. 10. Neutral conductors shall be of the type TW or equal insulation rating. 11. The minimum size service conduit other than special duty service shall be l ". 12. The neutral conductor of the service wiring system shall be grounded in the meter base and continued to the neutral bar in the service switch. 13. As to new residences only, the following sizes shall be the minimum Page 3