These pages include:

  of seminars and new! links about the use of electrical equipment in hazardous locations.

  of Ex equipment with helpful information on their web pages.

  with information on these subjects: e.g. CSAIECUL

  with notes on Ex and Hazardous Location approvals.

..... and more.  For a listing of all the pages, see Index

Bookmark this page .. so you can use it again to help you find the wealth of information on the Internet about the Zone classification system for hazardous locations, the ATEX directive , methods of protection ,  IECEx System , News of Seminars on these topics and links to other websites .

Note about HAZLOC INC. and their IECEx System (Ex Scheme) notes

If you have a question about the use or certification of equipment for use in explosive gas atmospheres, visit the specific Yahoo group 'hazloc'  that has been set up to give you a 'hot-line' to the experts. SIgn up to this group to post and respond to questions. 

Index logo
Index of contents of Swansea Consulting's 'Ex- and Haz-Loc' pages
News:  Links to a separate page on this site.

Agencies Table - Table of haz. loc. eqpt. testing and certifying agencies:  Links to a separate page on this site.

ATEX Directive:  Links to a separate page on this site.

Commercial links with less educational content Links to a separate page on this site.

CSA certification for Division or Zone classified areas:  Links to a separate page on this site.

Electrical Heat Tracing standards - cross reference chart:  Links to a separate page on this site.
for Hazardous areas, Industrial use and Non-industrial use

Explosion protection techniques  ..   (Methods of protection)

IECEx System:  Link to a separate page on this site.

IEC notes:
  Link to a separate page on this site.

IEC TC 31 and working group activities:
  External link.

Info. links
such as API and OSHA Links logo:
  Links to a separate page on this site.

Manufacturers of Ex- equipment
offering further information:
Links to a separate page on this site.

North American wiring methods:
  Links to a separate page on this site.

Standards Writing Bodies:  Links to a separate page on this site.

Technical Books / Publications:
Links to a separate page on this site.

Technical Papers:
Links to a separate page on this site.

Testing and Certifying Agencies
with information pages mentioning Ex-e or Zones:
Links to separate page on this site.

Zones and Divisions - Why the increased interest in North America?
The US National Electrical Code (1999) and the Canadian Electrical Code (1998) recognized the use of the Zone system of Hazardous Location classification, as used in Europe and other parts of the world. This provided the opportunity for electrical products designed for European hazardous locations to gain acceptance in North America.  Also, North American companies now have a local, as well as an overseas market for products specifically designed to offer methods of protection such as the Ex-e method of protection. More detailed information is available from Killark (faq pages no longer on their website, but see Killark hazardous location data) or review a copy of their old faqs (frequently asked questions) information at (Killark 1997 faqs).

Add information to this page.  This page will be updated to include links to web pages with information about the classification of Hazardous Locations by the Division or Zone classification system.  An index of commercial links to pages describing electrical equipment meeting both European Hazardous Location requirements and North American requirements is also provided.  This includes European equipment which can now become (or is already) certified, listed or approved to Canadian or U.S. standards. To add a link to your information, send details to:

If you would like marketing/certification assistance, or can offer suggestions for this web page, please send an e-mail to: Swansea Consulting, Toronto, Canada

These pages contain information that was available in public documents.  Any interpretation of the information is provided in good faith to offer additional understanding.  Users should conduct their own independent evaluation to assure that all applications meet the requirements of all relevant directives, as well as all local, regional and provincial codes, laws and regulations.
Permission is granted to quote, copy, or otherwise reproduce this material, provided that the following copyright notice
is retained on each and every copy: (c) Copyright 2003 Swansea Consulting.  
The consistent source of 'hazloc' information on the web since 1997.

Click to access Yahoo 'hazloc' Group

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