Why is it necessary to de-energize other equipment to adjust taps on a regulator?

De-energizing other equipment when adjusting taps on a regulator is crucial for ensuring safe adjustments are made. This safety practice protects linemen and technicians working on the equipment from the risk of electric shock, which can occur if the equipment is not fully de-energized. Working on energized equipment poses significant hazards, including the potential for arc flash and equipment malfunctions, which can lead to serious injuries or fatalities.

Furthermore, de-energizing allows for a secure environment to perform adjustments without the unpredictability of live electrical currents. It ensures that the work can be carried out methodically and reevaluates the equipment's performance after the adjustments have been made, confirming the integrity and reliability of the system.

While preventing power surges, allowing for faster operations, and conserving energy are important considerations in the operation of electrical equipment, they do not directly address the critical safety concerns associated with making adjustments on live systems. Safety must always be the foremost priority in such scenarios.