Find certified electrician - Helpful Links - troubleshooting, installation - diagnosis & repair - Hazardous area classifications are based on the general type of substance or material that is present in the area, the likelihood that it exists, and more detailed specifics, such as ignition temperatures and combustible properties. Cost To Buy, Product Details on products, parts and accessories for single phase power supply, 3 phase power supply, surge protection, repair old 220v outlets, house wiring. The National Fire Protection Association (NFPA), National Electric Code (NEC) 70, defines hazardous locations through a system of classes, divisions or zones, and groups that products must be labeled as to be used in those areas ..More