Electrical room

An electrical room is a technical room or space in a building dedicated to electrical equipment. Its size is usually proportional to the size of the building; large buildings may have a main electrical room and subsidiary electrical rooms. Electrical equipment may be for power distribution equipment, or for communications equipment.^[1]

Electrical rooms typically house the following equipment:

• Electric switchboards
• Distribution boards
• Circuit breakers and disconnects
• Motor control centers
• Transformers
• Busbars
• Electricity meters
• Backup batteries in a Battery room
• Fire alarm control panels
• Distribution frames

In large building complexes, the primary electrical room may house an indoor electrical substation.