What type of installations does Article 590 specifically address?

Article 590 of the National Electrical Code (NEC) specifically addresses temporary installations. This article provides guidelines and requirements for electrical systems that are not intended for permanent use but are required to operate for a limited duration. These installations could be associated with events, construction projects, or other scenarios where electrical power is needed temporarily.

The provisions outlined in this article ensure that even though these installations are temporary, they still adhere to safety standards equivalent to those for permanent installations. This includes guidelines on proper grounding, overcurrent protection, and safe equipment use to prevent hazards like electrical shocks or fires. Understanding the unique requirements for temporary installations is crucial for ensuring both safety and code compliance in such scenarios.

In contrast, while electric signs, elevators, and cranes have their own specific guidelines and safety standards under different NEC articles, they do not fall under the scope of Article 590, which is dedicated solely to the unique aspects of temporary electrical setups.