NCR 7448 Workstation Site Preparation Manual page 60

A-2 Appendix A: Transient Protection
•
Upon failure, exhibit a positive indication of its failure such as a blown fuse
or tripped breaker.
•
Be listed by the accepted safety organization for the country involved (UL,
CSA, VDE, ETL, and so on) and the installation must conform to local, state,
and national electrical codes and regulations.