Section 408.30536. Electrical; general; electrical conductors; connections and electrical grounding.

Rule  536.      Sections  E3401.1,   E3401.2,  E3401.3,  E3705.4.1,  E3908.8.1,   and

E3908.8.2  of  the  code   are  amended  and  E3401.5,   E3401.6,  E3401.6.1,  E3401.6.2, E3401.6.3, E3401.7, and E3401.8 are added to read as follows:

E3401.1. Applicability. The provisions of chapters 34 to 43 of the code shall establish the general scope of the electrical system and equipment requirements of the code. Chapters 34 to 43 of the code cover those wiring methods and materials most commonly encountered in the construction of 1- and 2-family dwellings and structures regulated by the code. Other wiring methods, materials, and subject matter covered in the Michigan electrical code, R 408.30801 to R 408.30880 are also allowed by the code.

E3401.2. Scope. Chapters 34 to 43 of the code shall cover the installation of electrical systems, equipment, and components indoors and outdoors that are within the scope of the code, including services, power distribution systems, fixtures, appliances, devices, and appurtenances. Services within the scope of the code shall be limited to 120/240 volt, 0- to 400- ampere, single-phase systems. These chapters specifically cover the equipment, fixtures, appliances, wiring methods, and materials that are most commonly used in the construction or alteration of 1- and 2-family dwellings and accessory structures regulated by the code. The omission from these chapters of any material or method of construction provided by the Michigan electrical code, R 408.30801 to R 408.30880, shall not be construed as prohibiting the use of such material or method of construction. Electrical systems, equipment, or components not specifically covered in these chapters shall comply with the applicable provisions of the Michigan electrical code, R 408.30801 to R 408.30880.

E3401.3. Not covered. Chapters 34 to 43 do not cover the following:

(1)     Installations under the exclusive control of communications utilities and electric utilities.

(2)     Services over 400 amperes.

E3401.5. General. This section provides for the design, construction, installation, alteration, and repair of photovoltaic equipment and systems. [690.1]

E3401.6. Requirements. The installation, inspection, maintenance, repair, and replacement of photovoltaic systems and all system components shall comply with the manufacturer’s instructions, Sections E3401.6.1 through E3401.6.3 and NFPA 70. [690.3]

E3401.6.1. Roof-mounted panels and modules. Where photovoltaic panels and modules are installed on roofs, the roof shall be constructed to support the loads imposed by such modules. Roof-mounted photovoltaic panels and modules that serve as roof covering shall conform to the requirements for roof coverings in chapter 9. Where mounted on or above the roof coverings, the photovoltaic panels and modules and supporting structure shall be constructed of noncombustible materials or fire-retardant treated wood equivalent to that required for the roof construction.

E3401.6.2. Roof and wall penetrations. Roof and wall penetrations shall be flashed and sealed in accordance with chapter 9 to prevent entry of water, rodents, and insects.

E3401.6.3.      Ground-mounted panels and modules.    Ground-mounted panels and modules shall be installed in accordance with the manufacturer’s instructions. [110.3(B)]

E3401.7. Photovoltaic panels and modules. Photovoltaic panels and modules shall be listed and labeled in accordance with UL 1703. [690.4(B)]

E3401.8. Inverters. Inverters shall be listed and labeled in accordance with UL 1741. Systems connected to the utility grid shall use inverters listed for utility interaction. [690.4(B)]

E3705.4.1. Conductors rated 60◦C. Except where the equipment is marked otherwise, termination provisions of equipment for circuits rated 100 amperes or less, or marked for 14  AWG through 1 AWG  conductors, shall  be used  only for  1 of the following:

1.    Conductors rated 60◦C (140◦F).

2.      Conductors with higher temperature ratings, provided that the ampacity of such conductors is determined based on the 60◦C (140◦F) ampacity of the conductor size used.

3.      Conductors with higher temperature ratings where the equipment is listed and identified for use with such conductors. [110.14(C)(1)(a)]

E3908.8.1. Grounding of flexible metal conduit. Flexible metal conduit shall not be permitted as an equipment grounding conductor. [Michigan Electrical Code Rules Part 8

250.118  amended]

E3908.8.2. Grounding of liquid-tight flexible metal conduit. Liquid-tight flexible metal conduit shall not be permitted as an equipment grounding conductor. [Michigan Electrical Code Rules Part 8 250.118 amended]

History: 2001 AACS; 2004 AACS; 2008 AACS; 2010 AACS; 2015 AACS.