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. 408.30537 - Separate outdoor electric space conditioning equipment

Current through Vol. 24-12, July 15, 2024
Rule 537.
Section E3601.6.3, E3601.6.4, and E3608.1.2.1 are added
						to the code and Sections E3604.2.1, and E3609.7.1 are amended to read as
						follows:
E3601.6.3. Separate outdoor
					 electric space conditioning equipment. A service disconnect for separately
					 metered outdoor electric space conditioning equipment shall be grouped with the
					 service disconnecting means for the structure or immediately adjacent to the
					 outdoor meter cabinet. A permanent plaque or directory shall be installed at
					 each service disconnect location denoting the other services, feeders, and
					 branch circuits supplying a building or structure and area served by each
					 service, feeder, and branch circuit. Grounding shall be in accordance with
					 Sections E3607 and E3608
E3601.6.4.
					 Electric vehicle charging system service disconnect. A service disconnect for
					 electric vehicle charging systems shall be grouped with the service
					 disconnecting means for the structure or immediately adjacent to the outdoor
					 meter cabinet. A permanent plaque or directory shall be installed at each
					 service disconnect location identifying the other services, feeders, and branch
					 circuits supplying a building or structure and area served by each service,
					 feeder, and branch circuit. Grounding shall be in accordance with Section E3607
					 and E3608.
E3604.2.1. Above roofs.
					 Conductors shall have a vertical clearance of not less than 8 feet (2438 mm)
					 above the roof surface. The vertical clearance above the roof level shall be
					 maintained for a distance of not less than 3 feet (914 mm) in all directions
					 from the edge of the roof. See figure E3604.2.1. [230.24(A)]
Exceptions:
1.
					 Conductors above a roof surface subject to pedestrian traffic shall have a
					 vertical clearance from the roof surface in accordance with Section E3604.2.2.
					 [230.24(A) Exception 1]
2. Where
					 the roof has a slope of 4 inches (102 mm) in 12 inches (305 mm) or greater and
					 is not accessible from an operable window, the minimum clearance shall be 3
					 feet (914 mm). [230.24(A) Exception 2 amended]
3. The minimum clearance above only the
					 overhanging portion of the roof shall not be less than 18 inches (457 mm) where
					 not more than 6 feet (1 829 mm) of conductor length passes over 4 feet (1 219
					 mm) or less of roof surface measured horizontally and such conductors are
					 terminated at a through-the-roof raceway or approved support. [230.24(A)
					 Exception 3]
4. The requirement for
					 maintaining the vertical clearance for a distance of 3 feet (914 mm) from the
					 edge of the roof shall not apply to the final conductor span where the service
					 drop is attached to the side of a building. [230.24(A) Exception 4]
5. Where the voltage between conductors does
					 not exceed 300 and the roof area is guarded or isolated, a reduction in
					 clearance to 3 feet (914 mm) shall be permitted. [230.24(A) Exception 5]
					 E3608.1.2.1. Verification of the installation of the concrete encased electrode
					 specified for in E3608.1.2. The inspection of a concrete incased electrode
					 meeting the requirements of E3608.1.2 except for the connection of the
					 grounding electrode conductor to the electrode shall be completed by 1 of the
					 following:
1. The electrical inspector for
					 the enforcing agency.
2. The
					 building inspector for the enforcing agency if all of the following conditions
					 are met:
a. Both the electrical and building
					 inspectors for the enforcing agency(s) shall sign a written agreement which
					 shall remain on file with the enforcing agency that designates authority to the
					 building inspector for that agency to inspect a concrete encased
					 electrode.
b. Upon inspection and
					 verification by the building inspector of a concrete encased electrode, the
					 building inspector shall provide written documentation to the electrical
					 inspector that the installation of the concrete encased electrode meets the
					 requirements set forth in E3608.1.2. Electrode shall be &frac12" diameter
					 (13mm) reinforcing bar or larger, a minimum of 20 feet (6 096 mm) long
					 including usual tie wire connections, and encased in 2 inches (51 mm) of
					 concrete except for the end of the electrode which shall be in an accessible
					 location and not subject to deteriorating conditions (i.e. backfill).
c. Verification of approval of the concrete
					 encased electrode shall be made at the construction site by signature of the
					 field copy of the building permit noting that the concrete encased electrode
					 was approved along with the footing inspection or by a readily available
					 inspection tag attached to the accessible grounding electrode reinforcing
					 bar.
d. The grounding electrode
					 conductor connection to the concrete encased electrode shall be inspected by
					 the electrical inspector for the enforcing agency.