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Subject: explosion-proof lighting

Date: 08/01/99
Posted by: John Tsai
E-mail: epmd0220(at)ms17(dot)hinet(dot)net(no spam)
URL: http://


Dear sirs, I'm engaged in business of lighting fixture in Taiwan, including explosion-proof lighting. However, there's not any specific system used, therefore, there're 3 systems of the certification of hazardous location here, such as North American, Europe and Japanese system. As one knows, who is also engaged in such business or job, North American system is symbled by Class1 Division 1, and Europe system as EExd IIC. However, there're some questions confusing me for a period of time, please help me answer some questions as follows if anyone can: 1. Which level is higher between EExd and EExedq? how to explain the construction of EEXedq? is it EExe or EExd or some is EExe and some is EExd? 2. Are EExd and Exd the same? 3. Can anyone teach me how to explain the elements of the 3 certifications of systems? 4. Is there any web-site regarding to the certification of hazardous location? Thanks everyone bearing my poor English and solve my problems. Please mail me at epmd0220@ms17.hinet.net

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