The term "ELV" in the context of an "ELV Shaft" stands for **"Extra Low Voltage."**
An **ELV Shaft** refers to a vertical space or conduit in a building or structure specifically designated for running extra low voltage (ELV) cables and systems. These systems typically include:
- **Fire alarms**
- **CCTV (Closed-Circuit Television) systems**
- **Access control systems**
- **Intercom systems**
- **Public address systems**
- **Building automation systems**
Extra Low Voltage systems generally operate at voltages of 50 volts or less, and are used for communication, monitoring, and control functions. The ELV shaft is an essential part of the infrastructure in modern buildings, ensuring that these systems are safely and efficiently installed and maintained.