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Building Ordinance continued -13- that it supplies. The only permitted use of the fixture as a raceway would be for those fixtures approved by the Underwriters for that purpose; with special raceways, and RH No. 12 wiring would be accep- ted for additional circuits when installed according to this approval.. Gas and oil burning equipment: Each unit shall be on a separate circuit and be provided with a pilot light and switch located near the entrance to the room where unit is installed. Min- imum wire size No. 12 or larger. (w) Swimming pools: All conduits, junction boxes, reinforcing steel, filter pump equipment, lighting fixtures and similar metallic equipment must be bonded together and connected to a common ground. Metallic parts of ladders and diving boards must also be grounded. All underwater pool lights must be of approved low voltage type. Section 28. Feeders. The carrying capacity of each feeder or sub -feeder shall be based on the number of separate circuits which it supplies, computed as follows: (1) Overhead lighting circuits --assumed as having 1,000 watts per circuit for each 15 -amp. circuit. (2) Convenience outlet circuits --assumed as having 1,000 watts per circuit. (3) Non -itemized and heavy duty circuit --specified load for which designed. (4) Underground direct burial circuits shall be adequately sleeved under slabs, sidewalks, roads, flower beds, or when entering or leaving a building. To the total of these three, such demand factors as permitted by N. E. C. should be applied. Section 29. Voltage Drop. The maximum allowable voltage drop shall be as follows: (1) Lighting --Mains and Feeders combined, 1% drop from point of attachment to Service drops to point of distribution (panel) for branch circuits. Branches, 2% from distribution panel to receivers. (2) Power --Mains and feeders combined, 3% from point of attachment to service drop, to distribution panel. Branches, 1% from distribution point to receivers. (3) Lighting and power combined --The maximum allowable voltage Prop for lighting and power combined shall be 1% from point of service entrance to final distribution point. Branches shall be in accordance with the above allowable voltage drop. Section 30. Appeals - Decisions of Board of Adjustments and Appeals. Sections 112 and 114 of the Southern Standard Building Code, adopted by reference in this ordinance as part of the Building Code, are hereby adopted, as modified in the Building Code, and made a part of this Electrical Code. Section 31. Board of Adjustments and Appeals. The Board of • Adjustments and Appeals appointed under the provisions of the Building Code is hereby made the Board of Adjustments and Appeals of the Elect- rical Code. 15. Section 902.3, Paragraph 1 of the Southern Standard Building