Electric Service Manual for Michigan

The information provided in this manual is in addition to any other regulations which may apply, including various municipal
electric codes and the Michigan Administrative Code. We reserve the right to make revisions in these rules.

For questions on the process of requesting new service please visit our New Service page.

Sections of this Electric Service Manual have been revised as of 11/20/19.

Electric Service Manual (Michigan) - View and/or download the complete copy of the Electric Service Manual.

TitleRevision Date
Section 1
1-2Territory Maps
1-3Company Phone Numbers and Web Applications
Section 2
200 Amp and Smaller – Common07/2019
2-0General Metering Requirements
2-1Basic Calculations
2-2100-200 Amp Single-Phase UG
2-3100-200 Amp Single-Phase UG with Main
2-4100-200 Amp Single-Phase OH
2-5Temporary Services
2-6Mobile Home Services
2-7100-400 Amp Three-Phase OH or UG
Section 3
400 Amp and Larger – Common07/2019
3-1320 Class/400 Amp Single-Phase UG
3-2320 Class/400 Amp Single Phase UG Pedestal
3-3320 Class/400 Amp 3-Phase OH
3-4UG CT Cabinets
3-5Space Required to Terminate In Service Entrance Panels & Switchgear
3-6CT’s in Padmounted Transformers
3-7Termination Enclosures
3-8Standard Pad for 75 to 2500 KVA Padmount Transformers
3-9Working Clearances / Protective Posts for Padmount Transformers
3-10Location of Padmounted Transformers Near Buildings
3-11Multiple Metering
3-12Residential Deck Procedure
3-13Maximum Fault Currents
3-14Meter Protection from Snow and Ice
Section 4
Gas Metering01/2015
4-1Clearances to Gas Meters
Section 5
Miscellaneous Electric Metering01/2015
5-1Residential Customer Wiring
5-2Foundation Penetrations
5-3120 Volt Meter Socket
5-4Single-Phase 120/208 0-200 Amp, Network Metering
5-5Multiple Metering – Indoor/Outdoor Vertical Clearances
5-6Large CT Installation, Bus Bars – 2500-3000 Amp – Metering in Switchgear
5-7Large CT Installation, Doughnuts – 2500-3000 Amp – Metering in Switchgear
5-8OH Service, CT Metering
5-9Large Concrete Transformer Pad, 3750-5000 KVA
5-10Unmetered Street Lighting Decorations
5-11CATV Power Supplies
5-12Primary Metering
5-13Residential Electric Water Heater Service Entrance – Maintenance Only
Section 6
Electric Service – General01/2015
6-1Number of Services and Voltages / Meter
6-2Energy Conversion Factors
6-3Lightning Protection
6-4State Regulatory Agencies
Section 7
7-1Basic Electric Clearances – Services
7-2Miscellaneous Clearances
7-3Antenna Clearances
Section 8
Policies and Code10/2017
8-1Policies and Regulations – Table of Contents
8-2Company Policies – General
8-3Company Policies – Metering
8-4Company Policies – Utilization of Equipment
8-5State Code Information