DEPARTMENT OF LICENSING AND REGULATORY AFFAIRS

DIRECTOR’S OFFICE

CONSTRUCTION CODE

Filed with the secretary of state on November 13, 2023

These rules become effective 120 days after filing with the secretary of state.

(By authority conferred on the director of the department of licensing and regulatory

affairs by section 4 of the Stille-DeRossett-Hale single state construction code act 1972 PA

230, MCL 125.1504, and Executive Reorganization Order Nos. 1996-2, 2003-1, 2008-4,

2011-4, and 2017-1, MCL 445.2001, 445.2011, 445.2025, 445.2030, and 339.3102)

R 408.30801, R 408.30808, R 408.30810, R 408.30818, R 408.30819, R 408.30823, R

408.30838, and R 408.30873 of the Michigan Administrative Code are amended, R

408.30870 is added, and R 408.30826 and R 408.30828 are rescinded, as follows:

PART 8. ELECTRICAL CODE

R 408.30801 National electrical code; adoptions by reference; inspection; purchase.

Rule 801. (1) The standards contained in the national electrical code 2023 second printing

edition, including TIA 70-23-1 to 70-23-13, Errata 70-23-1 to 70-23-6, and Annex H,

except sections 80.2, 80.5, 80.15, 80.23, 80.27, 80.29, 80.31, 80.33, 80.35, and 90.6, as

published by the national fire protection association (NFPA), shall govern the installation,

replacement, alteration, relocation, and use of electrical systems or material. With the

exceptions noted, the national electrical code is adopted in these rules by reference.

(2) All references to the ANSI/ASME A17.1 2016, safety code for elevators and

escalators mean the Michigan elevator code and all references to the national electrical

code mean the Michigan electrical code.

(3) NFPA 110, standard for emergency and standby power systems, 2019 edition and

NFPA 111, standard on stored electrical energy emergency and standby power systems,

2019 edition, are adopted by reference in these rules.

(4) The codes are available for inspection at the Lansing office of the Michigan

Department of Licensing and Regulatory Affairs, Bureau of Construction Codes, 611 West

Ottawa Street, First Floor Ottawa Building, Lansing, Michigan 48933.

(5) The National Electrical Code, NFPA 110 and NFPA 111 may be purchased from the

National Fire Protection Association, 1 Batterymarch Park, Quincy, Massachusetts 02169,

or through the bureau’s website at www.michigan.gov/bcc, at a cost as of the time of

adoption of these rules of $153.00 for the National Electrical Code, $149.00 for the NFPA

110, and $149.00 for the NFPA 111 each, respectively.

R 408.30808 Scope.

October 5, 2023

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Rule 808. Section 80.1 is amended to read as follows:

80.1 Scope. The following are covered:

(1) The inspection of electrical installations as covered by 90.2.

(2) The review of construction plans, drawings, and specifications for electrical systems.

(3) The design, alteration, modification, construction, maintenance, and testing of

electrical systems and equipment.

(4) The regulation and control of electrical installations at special events, including, but

not limited to, exhibits, trade shows, amusement parks, and other similar special

occupancies.

R 408.30810 Authority.

Rule 810. Section 80.13 is added to the code to read as follows:

80.13. Authority. Where used in this article, the term authority having jurisdiction

shall include the electrical inspector or other individuals designated by the

governing body. This code shall be administered and enforced by the authority having

jurisdiction designated by the governing authority as follows:

(1) Disconnection. When the use of electrical equipment or its installations is found to

be dangerous to human life or property, the authority having jurisdiction may have the

premises disconnected from its source of electric supply. When this equipment or

installation has been condemned or disconnected, a notice shall be placed on the equipment

or installation listing the causes for the condemnation, the disconnection, or both, and the

penalty for the unlawful use of the equipment or installation. Written notice of this

condemnation or disconnection and the causes of it shall be given within 24 hours to the

owners, the occupant, or both, of the building, structure, or premises. It is unlawful for an

individual to remove this notice, to reconnect the electrical equipment to its source of

electric supply, or to use or permit to be used electric power in electrical equipment until

the causes for the condemnation or disconnection have been remedied to the satisfaction

of the inspection authorities.

(2) Delegate authority. The authority having jurisdiction may delegate to other qualified

individuals the powers as necessary for the proper administration and enforcement of this

code.

R 408.30818 Permits.

Rule 818. Section 80.19 is added to the code to read as follows:

80.19. Permits and approvals. Permits and approvals shall conform to subdivisions (a)

to (g), as follows:

(a) Transfer of permits. Permits shall not be transferable.

(b) Posting of permits. A copy of the permit shall be posted or otherwise readily

accessible at each work site.

(c) Permit not required. A permit is not required for all of the following:

(1) Lamps and cord connections. Installation or replacement of equipment such as lamps

and of electric utilization equipment approved for connection to suitable permanently

installed receptacles.

(2) Minor repair work. Replacement of flush or snap switches, fuses, lamp sockets, and

receptacles, and other minor maintenance and repair work, such as replacing worn cords

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and tightening connections on a wiring device and minor repair work, as that term is

defined in section 703 of the skilled trades regulation act, 2016 PA 407, MCL 339.5703.

(3) Electrical manufacturing. The process of manufacturing, testing, servicing, or

repairing electrical equipment or apparatus.

(4) Statute exemptions. Installations that are referred to in section 737(3)(a), (b), (c), (d),

(f), (h), (l), and (m) of the skilled trades regulations act, 2016 PA 407, MCL 339.5737.

(d) Expiration. Permits shall expire 180 days after issuance and are extended 180 days

from the last inspection date.

(e) Annual permits. In lieu of an individual permit for each installation or alteration, an

annual permit shall, on application, be issued to an individual, firm, or corporation

regularly employing 1 or more employees for the installation, alteration, and maintenance

of electrical equipment in or on buildings or premises owned or occupied by the applicant

for the permit. On application, an electrical contractor as an agent for the owner or tenant

shall be issued an annual permit. The applicant shall keep records of all work done, and

the records shall be transmitted periodically to the electrical inspector.

(f) Inspection and approvals.

(1) Inspection notification. On the completion of an installation of electrical equipment

that has been made under a permit, the individual, firm, or corporation making the

installation shall notify the electrical inspector having jurisdiction.

(2) Approvals. Where the inspector finds the installation to be in conformity with the

code, state statutes, rules, and, if applicable, local ordinances, the inspector shall issue to

the individual, firm, or corporation making the installation a final approval, or certificate

of approval provided payment has been made, which authorizes the connection into the

supply of electricity.

(3) Concealment. When a portion of the electrical installation within the jurisdiction of

an electrical inspector is to be hidden from view by the permanent placement of parts of

the building, the individual, firm, or corporation installing the equipment shall notify the

electrical inspector, and the equipment shall not be concealed until it has been approved by

the electrical inspector. The code official and the jurisdiction shall not be liable for expense

entailed in the removal or replacement of material required to allow inspection.

(g) Applications and extensions. The authority having jurisdiction may grant one 180-

day extension of the original permit time period of 180 days, upon presentation of the

permittee of a satisfactory reason for failure to start or complete the work or activity

authorized by the permit.

R 408.30819 Plans and specifications.

Rule 819. Sections 80.21, 80.21.1, and 80.21.2 are added to the code to read as follows:

80.21. Plans required. An applicant shall submit a detailed set of plans and specifications

with the application for an electrical permit for wiring or alteration to an electrical system

if the system requires installation of electrical equipment that has an ampacity of more than

400 amperes, at 1,000 volts or less, for the service or feeder and if the calculated floor area

in a building is more than 3,500 square feet. The enforcing agency may request plans for

projects that include an unusual design. Plans and specifications shall conform to the

following:

(a) Lighting layout.

(b) Circuiting.

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(c) Switching.

(d) Conductor and raceway sizes.

(e) Wattage schedule.

(f) Service location and riser diagram.

(g) Load calculations and available fault current calculations.

(h) A proposed method of construction that is drawn with symbols of a standard form.

All conductors are assumed to be copper unless otherwise stated in the plan.

Specifications, when provided, shall also include the information listed in this rule. The

selection of suitable disconnect and overcurrent devices to provide proper coordination and

interrupting capacity for a wiring system is the responsibility of the designer. The

enforcing agency, when approving electrical plans, does not assume responsibility for the

design or for deviations from electrical drawings. The permit holder shall ensure that the

plans and specifications approved by the enforcing agency, or a certified copy of the plans

and specifications, where required, are available on the jobsite for the use of the enforcing

agency.

80.21.1. Plan revisions. Work shall be installed pursuant to the code and approved

construction documents, and changes made during construction that are not in compliance

with the approved construction documents shall be resubmitted for approval as an amended

set of construction documents.

80.21.2. Information on construction documents. Construction documents shall be

dimensioned and drawn on suitable material. Electronic media documents may be

submitted when approved by the enforcing agency. Construction documents shall be of

sufficient clarity to indicate the location, nature, and extent of the work proposed and show

in detail that it will conform to the provisions of this code and relevant laws, ordinances,

rules, and regulations as determined by the enforcing agency.

R 408.30823 Connection to electricity supply.

Rule 823. Section 80.25 is amended to the code to read as follows:

80.25. Connection to electricity supply. Connections to the electric supply shall conform

to subdivisions (a) and (b).

(a) Supply electricity. Except where work is done under an annual permit and except as

otherwise provided in section 80.25, it is unlawful for an individual, firm, or corporation

to make connection to a supply of electricity or to supply electricity to electrical equipment

installation for which a permit is required or that has been disconnected or ordered to be

disconnected.

(b) Utility emergency connections. The governing utility may reconnect the electrical

service, before approval by the enforcing agency, following emergency repairs performed

by an electrical contractor licensed pursuant to article 7 of the skilled trades regulation act,

2016 PA 407, MCL 339.5701 to 339.5739. The electrical contractor shall secure a permit

by the next business day after the work is completed. This requirement is not applicable to

new service connections, upgrades, structural fires, or other planned modifications.

R 408.30826 Rescinded.

R 408.30828 Rescinded.

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R 408.30838 NFPA code; adoption by reference.

Rule 838. Sections 700.9 and 701.9 of the code are amended to read as follows:

700.9. Installation. Emergency systems shall be installed pursuant to NFPA 110 and

NFPA 111, 2019 editions, which are adopted by reference in R 408.30801.

701.9. Installation. Legally required standby systems shall be installed pursuant to NFPA

110 and NFPA 111, 2019 editions, which are adopted by reference in R 408.30801.

R 408.30870 NFPA code; adoption by reference.

Rule 870 Section 230.85 is added to the code to read as follows:

230.85 Emergency disconnects. For 1- and 2-family dwelling units, an emergency

disconnecting means shall be installed.

(A) General.

(1) Location. The disconnecting means shall be installed in a readily accessible outdoor

location on or within sight of the dwelling unit.

Exception: Where the requirements of section 225.41 are met, this section shall not

apply.

(2) Rating. The disconnecting means shall have a short-circuit current rating equal to or

greater than the available fault current.

(3) Grouping. If more than 1 disconnecting means are provided, they shall be grouped.

(B) Disconnects. Each disconnect shall be a service disconnect.

(C) Replacement. Where service equipment is replaced, all of the requirements of this

section shall apply.

Exception: Where only meter sockets, service entrance conductors, or related raceways

and fittings are replaced, the requirements of this section shall not apply.

(D) Identification of other isolation disconnects. Where equipment for isolation of other

energy source systems is not located adjacent to the emergency disconnect required by this

section, a plaque or directory identifying the location of all equipment for isolation of other

energy sources shall be located adjacent to the disconnecting means required by this

section.

(E) Marking.

(1) Marking text. The service disconnecting means shall be marked as follows:

“EMERGENCY DISCONNECT, SERVICE DISCONNECT”.

R 408.30873 Uses permitted.

Rule 873. Sections 334.10 and 334.12(A) of the code are amended to read as follows:

334.10. Uses Permitted. Type NM and type NMC cables may be used in the following,

except as prohibited in section 334.12:

(1) One- and 2-family dwellings and their attached or detached garages and storage

buildings.

(2) Multifamily dwellings and their detached garages.

(3) In other structures exceeding 1 floor above grade, cables shall be concealed within

walls, floors, or ceilings that provide a thermal barrier of material that has not less than a

15-minute finish rating as identified in listings of fire rated assemblies pursuant to the

Michigan building code.

(4) Cable trays in structures permitted to be types III, IV, or V where the cables are

identified for the use.

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334.12(A). Uses not permitted. Types NM and NMC cable shall not be permitted as

follows:

(1) In a dwelling or structure not specifically permitted in section 334.10(1), (2) and (3).

(2) Exposed in dropped or suspended ceilings in other than 1- and 2-family and

multifamily dwellings.

(3) As service-entrance cable.

(4) In commercial garages having hazardous or classified locations as defined in section

511.3.

(5) In theaters and similar locations, except where permitted in section 518.4(B).

(6) In motion picture studios.

(7) In storage battery rooms.

(8) In hoistways or on elevators or escalators.

(9) Embedded in poured cement, concrete, or aggregate.

(10) In hazardous or classified locations, except where specifically permitted by other

articles in this code.