Field glossary

SPD

Surge protection device, which clamps the transient on building wiring that the LPS itself does not address

Used across 3 Anvilfield field guides, most in Electrical.

Also defined as

Datacenter: Surge protective device, which clamps transient overvoltage and diverts surge current to ground
Surge protective device, the unit that clamps voltage transients and diverts the surge to ground

Where this shows up