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From lightning concepts to low-voltage power-line SPD products—a structured guide for engineers, panel builders, and local partners.

4. Earthing & Bonding for Protection · Page 6 of 6

Bonding Checklist for SPD Projects

A field checklist before energizing new SPDs.

Bonding Checklist for SPD Projects — Access Control Terminal in mounted beside a school / campus classroom door in a bright corridor

Before commissioning

  • Main earthing bar accessible and labeled
  • SPD PE landed on the same bar / bonding network as the board
  • No painted joints without proper electrical bond
  • Cable armor and trays bonded
  • LPS and electrical earth interconnection verified

After storms

Re-check bolted bonds and SPD status windows. Mechanical vibration and thermal cycling loosen connections over years.

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← External LPS Meets Internal SPDs

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Map of Key Lightning & SPD Standards →

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