13. Installation Best Practices · Page 3 of 6
Installing Backup Protection
Fuse/breaker selection and wiring.

Dedicated device
Where specified, install the exact fuse class / breaker rating from the SPD manual.
Discrimination
Ensure SPD fault clearing does not cascade into a site-wide blackout if avoidable.
Lockout
Include SPD backup devices in LOTO procedures so cartridges can be changed safely.
