Cores Identification

Insulation Colour Scheme

Article source：http://www.trcables.com/ author：上海嗨润 Release time：2018-01-25 09:43 Browse times：second

Insulation Colour Scheme

MV cables

Single core	Natural colour of the compound
Three core	Coloured tape or thread (e.g.: red - yellow - blue)

0.6/1 kV Power and Control Cables

According to BS 6883/BS 7917		Alternatives
1 core	Red or Black	White and numbered
2 cores	Red - Black	White and numbered
3 cores	Red - Yellow - Blue	White and numbered
4 cores	Red - Yellow - Blue - Black	White and numbered
Above 4 cores	black numbers on white background

150/250 V Instrumentation Cables

Pair	Black - White
Triple	Black - White - Red
Quad	Black - White - Red - Blue
Pairs/Triples/Quads are numbered with numbers printed directly on the insulated conductors (1-1; 2-2; …) or buy numbered tape

Outer Sheath Standard Colours

MV power and control	Red
LV power and control	Black
Instrumentation and control	Grey
Other colours available on request

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