Page 7 - Pocket Guides
P. 7
PG 4
FIXED WIRING SINGLE-PHASE
CABLE COLOUR CHANGES
Examples of an extension or alteration to an existing
three-phase installation.
New wiring in harmonized colours
(brown, black, grey line conductors,
blue neutral and a green-and-yellow
circuit protective conductor).
L1 L1
L2 L2
L3 L3
N N
Old New
L1 L1 L1
Old New
L2 L2 L2
L3 L3 L3
N N N
Alternative arrangement. New wiring with
three brown line conductors, blue neutral
and a green-and-yellow circuit protective
conductor. Unambiguous identification is
provided by lettering and numbering.
A warning label is required
(514.14.1)
7 3 phase distribution board
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