Chapter 3 of NFPA 70E consists of six Articles. The first is the introduction, and each of the remaining five applies to a specific type of equipment.
Article 300 (the introduction) consists of three small sections:
- Scope. For certain equipment, Chapter 3 modifies the general requirements of Chapter 1.
- Responsibility. The employer must provide and train employees in safety-related work practices. Employees must follow those practices.
- Organization. This tells you what’s in each of the six Articles.
The five equipment Articles are:
- Article 310 — Safety-Related Work Practices for Electrolytic Cells. Two important hazards to protect against are electric shock hazard and arc flash hazard.
- Article 320 — Safety Requirements Related to Batteries and Battery Rooms. Two important hazards to protect against are electric shock hazard and contact with the electrolyte (acid).
- Article 330 — Safety-Related Practices for Use of Lasers. About half of the Article consists of definitions; strong emphasis on knowing this equipment.
- Article 340 — Safety-Related Work Practices: Power Electronic Equipment. Examples include arc welders, high-power radio transmitting towers, industrial radio frequency induction heaters, and motor drives.
Article 350 — Safety-Related Work Requirements: Research and Development Laboratories. The shortest of these Articles, 350 emphasizes that only competent people using listed (or field-evaluated) equipment should work in these labs.