Polyester Enclosure Earthing — Banjo Earth Tags and 6mm² Links
This article covers Polyester Enclosure Earthing — Banjo Earth Tags and 6mm² Links. Polyester Ex e enclosures have no metallic continuity between entries. This guide explains the banjo earth tag system, 6mm² link requirements, and how to correctly earth SWA cables in non-metallic enclosures.
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.
Interactive inspection simulations, equipment selection decisions, and 1,185+ practice questions referenced to IEC 60079. Try free — no card required.
Try the Platform Free →More Articles