MIC Ratio — Minimum Igniting Current Ratio Explained

This article covers MIC Ratio — Minimum Igniting Current Ratio Explained. The MIC ratio is used to classify gases for intrinsically safe circuit design. This guide explains what MIC ratio means, how it relates to gas group classification, and its role in Ex i system design.

Overview

This topic is covered in depth in EX Academy's training modules and tested in the CompEx written assessment. Understanding this concept is essential for correct equipment selection and inspection in hazardous areas.