Class 1 Division 1 Electrical Installation

Assured systems offer a comprehensive range of class 1 division 2 and or atex zone 2 qualified products including panel pcs embedded computers data.

Class 1 division 1 electrical installation.

There are four general differences in wiring method requirements for div. Sources of such hazards include gases vapors dust fibers and flyings which are combustible or flammable. 1 fittings and flexible cords used in class i div. Class ii division 1.

Where embedded electrical products are concerned the requirement for harsh environment industries such as oil and gas will usually be certification to class 1 division 2 and or atex zone 2. If a wiring method is allowed for div. A room with a propane gas installation will typically be classified with the. One of the following three situations must exist in order for an area to be considered a class ii division 1 location.

Electrical equipment installed in such locations could provide an ignition source due to electrical arcing or high temperature. Article 501 contains the actual class i division 1 and division 2 installation requirements including wiring methods seals and specific equipment requirements. Class i locations consist of areas where gases vapors or liquids may exist that have the potential to become flammable or ignitable. The 2011 revision adds cross references for types mc cable 501 10 a 1 c and itc er itc was previously included cable 501 10 b 1 4.

Recommended reading for this topic. National electrical code nfpa 70 chapter 5 article 500. Class i division 2 group d. Where combustible dust is present in the air under normal operating conditions in such a quantity as to produce explosive or ignitable mixtures.

1 it s also allowed for div. There are two different divisions that exist in class i division 1 and division 2 along with three zones. Zone 0 1 2. And class i zone 0.

Zone 2 group iia. Locations that would be considered to be class i include petroleum refineries gasoline storage areas dry cleaning plants spray finishing. New cross references for class i. Class i ii and iii division 1 and 2 nec article 500.

In electrical and safety engineering hazardous locations hazloc pronounced haz lōk are places where fire or explosion hazards may exist. Trust our team of licensed and certified electricians with years of installation experience and expertise to ensure your electrical systems are up to code and. Since 2002 the nec has permitted hazardous locations to be categorized using either of two concepts or methods.