Table of Contents
1. Cable Identification Markers
1.1 All cables other than above ground lighting sub-circuit cables shall be identified with cable markers, stamped or printed with the cable-number, cable-size and type.
1.2 These markers have to be installed at:
- each cable-end direct under the pothead, cable gland or terminal block.
- every 10 meters in process areas and outside process areas every 25 meters along the run. (beginning 50 cm from the place where cables enter a building)
- all places where a cable changes of direction.
- both sides, where a cable passes a conduit, duct, floors, etc.
- all other places where identification is necessary to prevent confusion.
1.3 Cable markers shall be made of:
| a. | for aboveground installation | - metal tape suitable for use in a corrosive and chemical atmosphere |
| b. | for underground installation with lead sheathed cables | |
| with lead sheathed cables | - lead, sized 200x20x2 mm | |
| with non lead sheathed cables | - lead, sized 200x20x2 mm or when approved by Engineer self binding corrosion resistant PE tags but in a different colour to the cable. | |
2. Cable Numbering System
Complete cable numbers are showing: Voltage indication Service Number system.2.1 Voltage Indication
This indication system is as follows:
0 - 999 Volt No special indication
1000 - 1999 Volt by prefix 1
2000 - 2999 Volt by prefix 2
etc.
2.2 Service
The cable service is indicated by letters.
i.e. - - -F = HV feeder (see point 2.1)
F = LV “
- - -M = HV motor feeder (see point 2.1)
M = LV “ “
H = Heater feeder
C = Control cable
MC = Combined motor feeder and control cable
HC = Combined heater feeder and control cable
K = Instrumentation cable
L = Lighting sub-circuit cable
T = Telephone and other communication cables.
2.3 Number System
This system is showing, for pumps, compressors, mixers, heaters, etc. the complete equipment number 1) and for elec. equipment without an equipment number an abbreviated function descriptions.If more cables have the same service - and equipment number, the cable identification is extended, with an additional sequence number.
In exceptional cases where the “ equipment No.” system can not be applied a normal sequence number will be used.
2.4 Examples
26F - TR1 = 26kV feeder cable to transformer 1
6M - PC205 = 6kV motor feeder cable to compressor PC-205
C - PC205 = Control cable for compressor PC-205
M - PP206 = LV motor feeder cable to pump PP-206
F - LP1- 2 = 2nd feeder cable to lighting panel LP-1
L - LP1- 4 = Lighting cable from lighting panel LP-1 sub circuit 4.
1) If available Client’s equipment numbers shall be used.
3. Cable Bundle Identification
When a certain number of cable are coming from a common point e.g. a substation, and when they all run to a same area, these cables are not indicated on the cable layouts with their individual cable number, but with a cable bundle number along the run, to simplify the layout drawings.
In the cable list the individual cable numbers are shown under the bundle number concerned.