Understanding NEC Article 332: Mineral-Insulated, Metal-Sheathed Cable (Type MI) Introduction NEC Article 332 provides guidelines for the use, installation, and construction of Mineral-Insulated, Metal-Sheathed (Type MI) cable. This specialized cable offers exceptional fire resistance, moisture protection, and durability, making it suitable for critical electrical applications in residential, commercial, and industrial environments. Type MI cable comprises […]