Which is the best way to shut off electrical service to a building?

Using the main circuit breakers is indeed the most appropriate and safest method to shut off electrical service to a building. This approach allows for the immediate disconnection of power to the entire electrical system while ensuring that it is done in a controlled manner. By operating the circuit breaker, you minimize the risk of accidental electric shock and safely interrupt the flow of electricity in the building.

Pulling the electrical meter from its socket is not advisable, as this task typically requires specialized training and tools; plus, it can be dangerous without proper handling. In addition, this action often violates local codes and regulations.

Having a power company employee perform the shutoff is a viable option, but it is not the most efficient in an emergency context. Waiting for external assistance may delay critical actions needed to ensure safety in the building.

Cutting the service drop is a last-resort option. It can be very hazardous, as this action places the individual in direct contact with high-voltage wires, which can lead to severe injury or even death. It also poses risks to other utility workers and individuals nearby.

Overall, using the main circuit breakers is the most effective choice in terms of safety, legality, and practicality for shutting off electrical service to a building.