How must service equipment rooms be ventilated according to NEC Article 230?

Service equipment rooms must be adequately ventilated to ensure the proper functioning of electrical equipment and to prevent overheating. Adequate ventilation is crucial as it helps dissipate heat generated by electrical devices and maintains a safe operating environment. The National Electrical Code (NEC) recognizes the risks associated with heat in these areas and mandates sufficient airflow to enhance safety and efficiency.

Mechanical cooling methods could be beneficial, but the primary requirement focuses on ensuring ventilation rather than specifying how it should be achieved. Being permanently sealed would restrict airflow and lead to unsafe temperatures. Adjustments for temperature alone would not guarantee sufficient airflow or ventilation; thus, they do not meet the critical need for adequate ventilation as outlined in NEC Article 230.