Michigan Administrative Code › Department - Licensing and Regulatory Affairs › Bureau of Construction Codes › Construction Code Commission General Rules › Construction Code › Part 5 - RESIDENTIAL CODE › Section R. 408.30537b - Power and lighting distribution

Current through Vol. 24-12, July 15, 2024
Rule 537b.
Sections E3901.11, E3905.3.2, E3908.9, and E3908.10, are
						amended and E3908.9.1, E3908.9.1.1 and E3908.9.1.2 are added to read as
						follows:
E3901.11. Foyers. Foyers
					 that are not part of a hallway in accordance with Section E3901.10 and that
					 have an area that is greater than 100 feet2 (9.2903 m2) shall have a
					 receptacle(s) located in each wall space that is 3 feet (914 mm) or more in
					 width. Doorways, door-side windows that extend to the floor and similar
					 openings shall not be considered as wall space. [210.52(I) amended]
E3905.3.2. Securing to box. All permitted
					 wiring methods shall be secured to the boxes. Exception: Where
					 nonmetallic-sheathed cable is used with boxes not larger than a nominal size of
					 2 1/4 inches by 4 inches (57 mm by 102 mm) mounted in walls or ceilings, and
					 where the cable is fastened within 8 inches (2 032 mm) of the box measured
					 along the sheath, and where the sheath extends through a cable knockout not
					 less than 1/4 inch (6.4 mm), securing the cable to the box shall not be
					 required. Multiple cable entries shall be permitted in a single cable knockout
					 opening. [314.17(c) Exception amended]
E3908.9. Equipment fastened in place or
					 connected by permanent wiring methods. Noncurrent-carrying metal parts of
					 equipment, raceways, and other enclosures, where required to be grounded, shall
					 be grounded by 1 of the following methods: [250.134]
(a) By any of the equipment grounding
					 conductors permitted by Sections E3908.8 and E3908.8.3. [250.134(A)]
(b) By an equipment grounding conductor
					 contained within the same raceway, cable, or cord, or otherwise run with the
					 circuit conductors. Equipment grounding conductors shall be identified in
					 accordance with Section E3407.2. [250.134(B) Exception]
E3908.9.1. Cord-and-plug-connected equipment.
					 Non-current-carrying metal parts of the cord-and-plug-connected equipment, if
					 grounded, shall be connected to an equipment grounding conductor by 1 of the
					 methods in E3908.9.1.1 and E3908.9.1.2. [250.138]
E3908.9.1.1. By means of an equipment
					 grounding conductor. By means of an equipment grounding conductor run with the
					 power supply conductors in a cable assembly or flexible cord properly
					 terminated in a grounding-type attachment plug with 1 fixed grounding contact.
					 [250.138(A)]
Exception: The grounding contacting pole of
						grounding-type plug-in ground-fault circuit interrupters may be of the movable,
						self-restoring type on circuits operating at not over 150 volts between any 2
						conductors or over 150 volts between any conductor and ground. [250.138(A)
						Exception]
E3908.9.1.2. By
					 means of a separate flexible wire or strap. By means of a separate flexible
					 wire or strap, insulated or bare, connected to an equipment grounding
					 conductor, and protected as well as practicable against physical damage, where
					 part of the equipment. [250.138(B)]