Which article outlines specifications for commercial garages?

The correct answer is indeed Article 511, which specifically addresses the requirements for commercial garages in the National Electrical Code (NEC). This article outlines the necessary electrical installation requirements to ensure safety in environments where vehicles are serviced, stored, or parked, addressing aspects such as wiring methods, grounding, and equipment ratings that are crucial in these potentially hazardous locations.

Commercial garages often involve the presence of flammable fuel vapors and combustible materials, leading to specific safety concerns that the NEC must address. Article 511 provides detailed guidelines on determining the appropriate classification of the areas within these garages and the required electrical installations to mitigate risks associated with electrical equipment and potential ignition sources.

Understanding these standards is vital for electrical professionals working in commercial environments, as compliance with Article 511 ensures not only code adherence but also the safety of personnel and property within such spaces. The other articles listed are focused on different environments or applications and do not pertain directly to commercial garages as Article 511 does.