Glossary
branch circuit
The conductors and components following the last overcurrent protective device protecting a load.
cover
An unhinged portion of an enclosure that covers an opening.
door
A hinged portion of an enclosure that covers an opening.
ECS
environmental control system
EPO
emergency power off
equipment
A general term, including fittings, devices, appliances, luminaries, apparatus, machinery, and the like used as a part of, or in connection with, a modular data center. (Source: NEC.)
fuse, branch circuit type
A fuse of Class CC, G, H, J, K, L, R, and T. These fuses are able to provide branch circuit protection.
fuse, supplementary type
Miscellaneous type and miniature type fuses. These fuses are able to provide supplementary protection only.
LLS
LLS means look, listen, and sniff. Use your visual, auditory, and olfactory senses to detect electrical fires.
PDU
power distribution unit
PLC
programmable logic controller
power circuit
Conductors and components of branch and feeder circuits.
Glossary 76