Class 1 Division 1 Electrical Installation

There are two different divisions that exist in class i division 1 and division 2 along with three zones.

Class 1 division 1 electrical installation.

One of the following three situations must exist in order for an area to be considered a class ii division 1 location. 1 areas must be listed for class i div. Class i division 2 group d. Class i ii and iii division 1 and 2 nec article 500.

Where combustible dust is present in the air under normal operating conditions in such a quantity as to produce explosive or ignitable mixtures. Article 501 contains the actual class i division 1 and division 2 installation requirements including wiring methods seals and specific equipment requirements. And class i zone 0. All work in class i division 1 and division 2 locations is completed and installed per nfpa 70 national electrical code nec as well as all other applicable codes and standards.

1 fittings and flexible cords used in class i div. Electrical equipment installed in such locations could provide an ignition source due to electrical arcing or high temperature. Assured systems offer a comprehensive range of class 1 division 2 and or atex zone 2 qualified products including panel pcs embedded computers data. Recommended reading for this topic.

A room with a propane gas installation will typically be classified with the. Class ii division 1. Class i locations consist of areas where gases vapors or liquids may exist that have the potential to become flammable or ignitable. 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.

1 it s also allowed for div. Zone 0 1 2. Since 2002 the nec has permitted hazardous locations to be categorized using either of two concepts or methods. New cross references for class i.

National electrical code nfpa 70 chapter 5 article 500. 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. Locations that would be considered to be class i include petroleum refineries gasoline storage areas dry cleaning plants spray finishing. Zone 2 group iia.

Protection techniques for hazardous areas north america. If a wiring method is allowed for div. There are four general differences in wiring method requirements for div.