Working safely with power.
WHY IT MATTERS
Data centre electrical systems carry enough energy to kill.
WHAT PROCEDURES EXIST
Isolation and locking off before work Verification that circuits are dead Permits for work on live systems Restricted access to electrical rooms
WHAT LOCKING OFF MEANS
Physically preventing a circuit being re-energised while work proceeds.
WHY
So nobody restores power while someone is working.
WHAT ARC FLASH IS
A sudden release of energy in an electrical fault, which is extremely dangerous.
WHAT PROTECTS AGAINST IT
Protective equipment Procedures limiting live work System design reducing available fault energy
WHAT CUSTOMERS MUST OBSERVE
Facility rules on what may be connected and by whom.
WHAT NOT TO DO
Connect equipment exceeding the circuit rating Modify facility power Work in electrical areas without authorisation
WHAT TO CHECK BEFORE ANY WORK
Who is authorised, and what the procedure is.
WHAT TO DOCUMENT
Every electrical change.
WHAT TO NEVER ASSUME
That a circuit is dead because it should be.
