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30 . Only one box extension may be used unless the depth of
<br /> the box and extension does not exceed the length or width measure-
<br /> ment whichever is greater.
<br /> 31. All conduits, fittings and boxes used outside of the
<br /> buildings within the waterfront area shall be rigid conduit,
<br /> sheridized, galvanized or approved type plastic and shall be
<br /> approved for wet locations.
<br /> 32 . All wiring shall be performed by a firm or person
<br /> licensed by the Director of Labor and Industries to engage in,
<br /> conduct or carry on the business of installing wires or equipment
<br /> to convey electric current or by a person having a current certi-
<br /> ficate of competency issued by the Department of Labor and Industries
<br /> to engage in the business or trade of electrical work as a journey-
<br /> man. Such journeyman shall be employed by the company for which
<br /> the wiring is being done and whose duty with the company is only
<br /> that of installing wiring and electrical equipment.
<br /> EXCEPTION: Any work regulated by this code in a single
<br /> family dwelling used exclusively for living purposes, including
<br /> the usual accessory buildings and quarters in connection with such
<br /> buildings may be performed by the bona fida owner of such dwelling
<br /> and accessory buildings and quarters if occupied by said owner,
<br /> provided, that said owner shall personally purchase all material
<br /> and shall personally perform all labor in connection therewith
<br /> without having a certificate of competency as a journeyman electrician.
<br /> 33. For all new construction and when required by the
<br /> Electrical Inspector for alterations and additions there shall be
<br /> provided a complete electrical drawing showing one line diagram of
<br /> service equipment, equipment and conduit sizes, sub-panels , ratings
<br /> and sizes by catalogue number, panel schedules and circuit loads .
<br /> Feeder and feeder loads all services for apartments, motels or
<br /> hotels shall be accompanied by the designer' s work sheet showing
<br /> diversities taken in computing sizes of feeds and service con-
<br /> ductors. When the Building Official issues the permit, he shall
<br /> endorse in writing or stamp the plans and specifications "APPROVED. "
<br /> Such approved plans and specifications shall not be changed, modi-
<br /> fied, or altered without authorization from the Building Official,
<br /> and all work shall be done in accordance with the approved plans .
<br /> Any contractor not using the original electrical plans submitted
<br /> shall pay an additional plan-checking fee in the amount of 25% of
<br /> the plan-checking fee required by Section 303 of the Uniform
<br /> Building Code, 1973 Edition, and not less than $10.
<br /> 34. All wiring of more than 24 volts in the following classes
<br /> of buildings shall be installed in conduit, electrical metallic
<br /> tubing or other approved raceways in the following areas and
<br /> occupancies as defined by the National Electrical Code: All
<br /> buildings in Fire Zones #1 and #2. International Conference of
<br /> Building Officials Uniform Building Code as adopted by the City
<br /> of Everett Part of Table 5A, Group occupancies as follows : Group A,
<br /> assembly building 1000 or more; Group B, assembly buildings, stadiums,
<br /> reviewing stands, amusement parks (with or without stage) : Group C,
<br /> schools; Group D, hospitals, sanitariums, nurseries, homes for
<br /> aged (over 5 persons) ; Group E, storage of hazardous of flammable
<br /> materials, factories handling combustibles, repair garages, aircraft
<br /> hangers; Group F, gasoline stations, stores, factories, restaurants,
<br /> office buildings and power plants, pumping plants , cold storage
<br /> and creameries, factories and workshops using incombustible
<br /> and non-explosive materials, storage and sales rooms of incombustible
<br /> and non-explosive materials; Group H, hotels , dormitories , lodging
<br /> houses, convents, monasteries (over 10 persons) .
<br /> 35 . All main service panels supplying electric furnaces shall
<br /> be main breaker types .
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