What is the purpose of Lockout/Tagout in electrical maintenance on a bus?

• A. To secure and prevent energizing during maintenance and testing.
• B. To speed up testing.
• C. To bypass safety.
• D. To water down harness.

Answer: (A)

Lockout/Tagout is about isolating a power source and preventing it from re-energizing while maintenance or testing is performed. On a bus, electrical work can expose technicians to shock, arc flash, and equipment damage, so a controlled process is essential. The procedure involves identifying all energy sources, disconnecting or isolating them, applying a physical lock to the disconnect device, and attaching a tag that warns others not to re-energize. A qualified person verifies zero energy before work continues, and the lock ensures only the authorized person can remove it, preventing accidental re-energizing. This approach protects workers and ensures safe, reliable testing results. The other options don’t fit because they either imply rushing, bypassing safety, or are unrelated to electrical safety procedures.