What is the primary code used for electrical installations in Michigan?

The primary code used for electrical installations in Michigan is the National Electrical Code (NEC). The NEC provides comprehensive regulations and guidelines that govern the installation of electrical systems across the United States, including Michigan. This code is periodically updated to incorporate new safety practices and technological advancements, ensuring that electrical installations are safe and reliable.

While the International Electrical Code and various local or state codes can exist, the NEC serves as the foundation upon which most local codes, including in Michigan, are based. Local building codes might adopt the NEC with specific amendments, but they do not replace it. Additionally, a state electrical code, if it exists, is typically based on and aligned with the NEC. Hence, the NEC is crucial for guiding electrical professionals in compliance with national standards, ensuring consistent safety and performance across installations.