Certification / Listing / Approvals
Electrical equipment for use in potentially explosive atmospheres is usually certified, listed or approved by a recognised Certification Body or Test House. In Europe, there are numerous Certification Bodies such as Baseefa, and SIRA in the UK. In North America, there are many recognised Certification Bodies and testing laboratories such as UL, FM and the CSA. The definition of "Approved" by the NEC is "Acceptable to the authority having jurisdiction". The definition "Listed" by the NEC is "Equipment, materials or services included in a list published by an organisation that is acceptable to the authority having jurisdiction". Further information is given in the NEC.
