If electricity is supplied to a building by underground cables, where might the shutoff be located?

When electricity is supplied to a building through underground cables, the shutoff is typically located in an underground vault. This placement allows for easy access to the electrical service disconnect and is designed to protect the equipment from environmental factors such as weather and physical damage. These vaults are specifically constructed to house electrical connections safely and securely, making them an appropriate and safe location for the shutoff point.

In contrast, other locations such as the control room, on the roof, or in the electrical room might not offer the same level of safety and accessibility for controlling the electrical supply, especially for connections coming from underground cables. For example, the electrical room may house distribution panels but might not contain the primary shutoff for underground services. Having the shutoff in an underground vault ensures compliance with safety standards and facilitates maintenance operations without exposing personnel to unnecessary risks.