13. Installation Best Practices · Page 6 of 6
Safety During SPD Installation
Treat failed SPDs and surge events with respect.

Assumed energy
Boards can still be energized by alternate feeds. Verify absence of voltage.
Failed cartridges
MOVs at end of life may be hot or mechanically stressed—use PPE and follow site rules.
After a major strike
Inspect SPDs, bonds, and affected equipment before declaring the system healthy.
