SWA Cable in Hazardous Areas — Selection and Installation
This article covers SWA Cable in Hazardous Areas — Selection and Installation. Steel wire armoured (SWA) cable is the most common cable type in hazardous area installations. This guide covers SWA cable selection, gland requirements, and earthing for Ex d and Ex e applications.
Overview
Cable gland and accessory selection for Ex equipment is a core topic in CompEx Ex01/Ex02 and is tested in the equipment selection simulator on EX Academy. Understanding the correct specification for every scenario — threaded vs clearance, Ex d vs Ex e, metal vs polyester body — is essential for the assessment.
EX Academy's 15 equipment selection scenarios specifically test cable gland and accessory selection across a range of Ex protection types, enclosure volumes, and gas groups. Scenario 01 (Ex d, 2.5L, threaded entry) is the recommended starting point.
Key Rules
Always verify: (1) entry type — threaded or clearance; (2) enclosure volume for Ex d; (3) enclosure body material for Ex e; (4) gas group — must match or exceed area classification; (5) accessories required for the specific combination of entry type and body material.
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