ERICO Practical Guide to Electrical Grounding - Manual (Page 127)

Practical Guide to Electrical Grounding 120
Lightning Protection System: A complete system of air
terminals, conductors, ground terminals, interconnecting
conductors, surge protection devices, and other connectors
or fittings required to complete the system. NFPA 780 [3]
Main Earthing Terminal: A terminal or bar provided for
the connection of protective conductors including equipo-
tential bonding conductors and conductors for functional
earthing, if any, to the means of earthing. ITU K27 [2]
Minimum Approach Distance: The closest distance a
qualified employee is permitted to approach either an
energized or a grounded object, as applicable for the work
method being used. ANSI C2 [5]
Neutral Conductor (N): A conductor connected to the
neutral point of a system and capable of contributing to the
transmission of electrical energy. ITU K27 [2] (Also see
grounded conductor.)
Raceway: Any channel designed expressly and used solely
for holding conductors. ANSI C2 [5]
An enclosed channel of metal or nonmetallic materials
designed expressly for holding wires, cables, or busbars,
with additional functions as permitted in this Code.
Raceways include, but are not limited to, rigid metal
conduit, rigid nonmetallic conduit, intermediate metal
conduit, liquid tight flexible conduit, flexible metallic
tubing, flexible metal conduit, electrical nonmetallic
tubing, electrical metallic tubing, cellular concrete floor
raceways, cellular metal floor raceways, surface raceways,
wireways, and busways. NEC 100 [1]
Grounding Book 4/14/99 10/5/99 6:02 PM Page 120 (Black plate)