[Amended 11-11-1997 by Ord. No. 1099]
A.
The 1996 Edition of the National Electrical Code (NFPA-70), as promulgated by the National Fire Protection Association with Technical Amendments approved and recommended by the Reciprocal Electrical Council, Inc., and approved by the Bureau of Construction Codes, is hereby adopted by reference, except those provisions thereof amended hereafter in this chapter, and all electrical service, equipment and facilities designed, constructed, installed, altered and maintained in the city shall conform to the requirements of such code, rules and amendments directly and/or as provided herein. Copies of said code and rules are on file in the office of the City Clerk, being marked and designated as the 1996 Edition of the National Electrical Code (NFPA-70).
B.
The Technical Amendments to the 1996 Edition of the National Electrical Code, being Rules 1 through 9, inclusive, as hereinafter stated, and as contained in the RECI Manual, 1996 Edition, as proposed by the Reciprocal Electrical Council, Inc. (RECI), are hereby adopted, and said Technical Amendments shall hereafter be incorporated in this Building and Housing Code as part of the ordinances of the City of Roseville and shall pertain to all electrical service, equipment and facilities designed, constructed, installed, altered and maintained by the City of Roseville, which shall conform to the requirements of such rules and the amendments thereto provided in this chapter.
Any reference in the National Electrical Code and in the other standards adopted herein to "state" shall mean the State of Michigan. Any reference therein to "municipality" shall mean the City of Roseville, Macomb County, Michigan. Any reference to the "Municipal Charter" and "local ordinances" shall mean the Charter and Code of Ordinances of the City of Roseville and all applicable statutes of the State of Michigan pertaining to home rule city government.
The City of Roseville Department of Buildings and Inspection and each of its employees are hereby appointed as the enforcement and administrative agency of the National Electrical Code and the other standards adopted in § 126-78.
Each and every reference in the National Electrical Code and in the other standards adopted in§ 126-78 to a fee or charge for a permit shall be and hereby is deleted, and each such fee or charge for the purpose therein designated shall be in such amount as may be set by resolution of the City of Roseville Council from time to time.
A.
RULE 1. Circuit interconnection. Section 210-11 as added as follows:
| 210-11. Circuit Interconnection. Neutral and ungrounded circuit conductors for two-, three- or four-wire circuits shall originate at the same outlet or panel. Neutral and/or ungrounded conductors for circuits shall not be tapped or spliced from different locations in the wiring system. |
B.
RULE 2. Service-entrance conductor sets. Section 230-40 is amended to read as follows:
| 230-40. Number of Service-Entrance Conductor Sets. Each service drop or lateral shall supply only one set of service-entrance conductors. | ||
| Exception No. 1: Buildings with more than one occupancy shall be permitted to have one set of service-entrance conductors run to each occupancy or to a group of occupancies. | ||
| Exception No. 2: Where two to six service disconnecting means in separate enclosures are grouped at one location and supply separate loads from one service drop or lateral, one set of service-entrance conductors shall be permitted to supply each of several such service equipment enclosures. | ||
| Exception No. 3: Deleted. | ||
C.
RULE 3. Grouping of disconnects. Section 230-72(a) is amended to read as follows:
| 230-72. Grouping of Disconnects. | |||
| (a) | General. The two to six disconnects as permitted in Section 230-71 shall be grouped. Each disconnect shall be marked to indicate the load served. | ||
| Exception No. 1: one of the two to six service disconnecting means permitted in Section 230-71, where used only for a water pump also intended to provide fire protection, shall be permitted to be located remote from the other disconnecting means. | |||
| Exception No. 2.- A service disconnect(s) for separately metered outdoor electric space conditioning equipment for one- and two-family dwellings shall be permitted to be located immediately adjacent to the outdoor meter cabinet. A permanent plaque or directory shall be installed at each service-disconnect location denoting all other services, feeders and branch circuits supplying that building or structure and the area served by each. The feeder or branch circuit permitted by this exception shall not enter or pass through the structure or building served. | |||
D.
RULE 4. Outside feeder taps. Section 240-21(m) is amended to read as follows:
| 240-21. Location in circuit. | ||||
| (m) | Outside Feeder Taps. Outside conductors shall be permitted to be tapped to a feeder or to be connected at the transformer secondary, without overcurrent protection at the tap or connection, where all the following conditions are met: | |||
| (1) | The conductors are suitably protected from physical damage. | |||
| (2) | The conductors terminate at up to six circuit breakers or six circuit breakers or six sets of fuses, that will limit the load to no more than 125% of the ampacity of the conductors. The calculated load shall not exceed the allowable ampacity of the conductors. | |||
| (3) | The tap conductors are installed outdoors, except at the point of termination. | |||
| (4) | The overcurrent device for the conductors is an integral part of a disconnecting means or shall be located immediately adjacent thereto. | |||
| (5) | The disconnecting means for the conductors are installed at a readily accessible location either outside of a building or structure or inside nearest the point of entrance of the conductors. | |||
E.
RULE 5. Raceways as grounding means:
(1)
Section 250-91(b) is amended to read as follows:
| 250-91. Material. | ||
| (b) | Types of Equipment Grounding Conductors. The equipment grounding conductor run with or enclosing the circuit conductors shall be one or more or a combination of the following: a copper or other corrosion-resistant conductor. This conductor shall be solid or stranded; insulated, covered or bare; and in the form of a wire or a busbar of any shape; (2) rigid metal conduit, (3) intermediate metal conduit, (4) electrical metallic tubing; (5) armor of Type AC cable; (6) the copper sheath of mineral-insulated, metal-sheathed cable; (7) the metallic sheath or the combined metallic sheath and grounding conductors of Type MC cable; (8) cable trays as permitted in Sections 318-3(c) and 318-7; (9) cablebus framework as permitted in Section 365-2(a); (10) other electrically continuous metal raceways listed for grounding. | |
(2)
Section 350-14 is amended to read as follows:
| 350-14. Grounding. Flexible metal conduit shall not be permitted as a grounding means, Where an equipment bonding jumper is required around flexible metal conduit, it shall be installed in accordance with Section 250-79. |
(3)
Section 351-9 is amended to read as follows:
| 351-9. Grounding. Liquidtight flexible metal conduit shall not be permitted as a grounding means. Where an equipment bonding jumper is required around liquidtight flexible metal conduit, it shall be installed in accordance with Section 250-79. |
F.
RULE 6. Type NM and NMC cables; uses not permitted. Section 336-5 is amended to read as follows:
| 336-5. Uses Not Permitted. | |||
| (a) | Types NM, NMC and NMS. Types NM, NMC and NMS cables shall not be used: | ||
| (1) | As service-entrance cable. | ||
| (2) | In commercial garages having hazardous (classified) locations as provided in Section 511-3. | ||
| (3) | In theaters and similar locations, except as provided in Article 518, Places of Assembly. | ||
| (4) | In motion-picture studios. | ||
| (5) | In storage battery rooms. | ||
| (6) | In hoistways. | ||
| (7) | Embedded in poured cement, concrete or aggregates. | ||
| (8) | In any hazardous (classified) location, except as permitted by Sections 501-4(b), Exception, 502-4(b), Exception, and 504-20. | ||
G.
RULE 7. Space-heating equipment (other than electric heat). Section 422-21(c) is added as follows:
| 422-21(c). Space-heating equipment other than electric heat. A readily accessible disconnect switch shall be mounted on the exterior of the heating equipment or on a surface adjacent to the heating equipment. |
H.
RULE 8. Circuits in anesthetizing locations. Section 517-61(a) is amended to read as follows:
| 517-61. Wiring and Equipment. | |||
| (a) | Within Anesthetizing Locations. | ||
| (1) | Except as permitted in Section 517-160, each power circuit within, or partially within, an anesthetizing location as referred to in Section 517-60 shall be isolated from any distribution system by the use of an isolated power system. | ||
| Exception: An area in a health-care facility which does not use flammable inhalation anesthetics and is dedicated to brief, superficial procedures carried out under inhalation anesthesia or analgesia, such as dental operatories, clinics and outpatient facilities. | |||
I.
RULE 9. Fire alarm supervision. Section 760-16 is added as follows:
| 760-16. Supervision. All fire-protective circuits shall be electrically or electronically supervised so that any malfunction of the system, such as an electrical open, a ground fault or any short circuit fault on the main power supply, signaling line or alarm initiating devices, will indicate a visual and audible signal at the alarm panel when proper alarm operation would be prevented. | ||
| Exception: Interconnecting circuits of household fire-warning equipment that are wholly within a dwelling unit. | ||
