Cable Specifications and Installation:
Group 1: Single Twisted pair/Triad, Unshielded.
Conductor: Stranded, Circular Copper (Material) as per ASTM B8.
Conductor Size: # 16 AWG
Primary Insulation Material: Flame Retardant PVC or XLPO or XLPE minimum temperature rating is 90o C (NEC 501-4 (b), NEC 502-4 (b).
Primary Insulation Voltage Rating: 300V for Type PLTC and type IT cable, 600V for type TC Cable.
Primary Insulation Thickness: (0.38 mm for PLTC and ITC Cable), (0.64 mm for TC cable).
Shield Thickness: 0.022 mm
Group 2: Single twisted pair/triad shield.
Shield Material: Aluminum foil bonded to non hygroscopic polyester (Mylar) tape.
Shield Thickness: 0.022 mm
Shield Application: Helical, Minimum 25% overlap, to provide 100% coverage and electrical isolation from conductors.
Group3: Multipair / Triad, Unshielded or without overall shield thickness 0.022 mm.
Communication Wire: Not required if required shall be manufacturer’s standard size, Insulation same as primary insulation – Orange Color.
Group 4: Multipair / triad, Individual and overall shields.
Group 5: Thermocouple Extension wire conductor – solid thermocouple extension wire as per ANSI MC 96.1
Conductor Size: # 16 AWG for singal pair, # 18 AWG for Multipair.
Color Code: ANSI MC 96.1(Temperature Measurement Thermocouple), (Yellow and Red) Negative shall be Red color and magnetic
Terminal Block: As per minimum thickness of terminal block shall be 5 mm or higher with Spring type terminal block are not acceptable, Terminal block shall be fire retardant halogen free, High strength material such as polyamide on equivalent in accordance with UL94.
Lugs: Drawing / Color Codes / Ferruling will be done for easy identification with use of lugs. Lugs are two types. One is crimping type and the other one is soldering type.
Type of Lugs: (1) Shanap Type (2) Pin Type (3) Ring Type (4) U Type
Gland Size: ½ inch, ¾ inch, 1 inch, 1½ inch, 2 inch.
Thread Type: ET (Equal Thread), BSP (British Standard Pitch), NPT (National Pipe Thread).
Color Code of Instrument Cables:
AC Supply:
- Phase – Black
- Neutral – White
- Ground – Green or Green with yellow tracer
DC Supply:
- Positive – Red
- Negative – Black
Signal Pair:
- Positive – Black
- Negative – White
Signal Tried:
- Positive – Black
- Negative – White
- Third Wire – Red
Thermocouple:
- Positive – as per ANSI MC 96.1 (Yellow)
- Negative – as per ANSI MC 96.1 (Red)
Type of Thermocouple:
T Type Thermocouple Copper + Constant -185 ~ 371 oC Blue – Red/White
J Type Thermocouple Iron + Constant -190 ~ 750 oC White – Red/White
K Type Thermocouple Cromel + Alumel -190 ~ 1250 oC Yellow – Red/ White
E Type Thermocouple Chromel + Constantan -196 ~ 982 oC Purple – Red/ White
S Type Thermocouple Platinum/Rhodium-Platinum -18.0 ~ 1760 oC Black – Red
R Type Thermocouple Pt87/Rh13 + Platinum -17.7 ~ 1704 oC Black – Red/ White
Pulling tension of FOC = 600 Pounds.
Fir Resisting: (CI: Circuit Integrity) Flame Retardant, for transmission of analog or digital signal to instrument and control systems.
Insulation: Silicon Rubber
Armor: Zinc Coated round steel.
RE: Instrument Cable
2G: Insulation of Silicon
SI: Collective Screen
H: Inner Jacket of LSZH
SWA: Round Steel Wire Armor
I/W: Outer Jacket of heat resistant PVC
FL: Reduced Flame Propagation
CI: Circuit Integrity
FB: Field Bus Cable
Y: Outer sheath of PVC
2X : Insulation of XLPE
PIMF: Pair Screen
HVAC: Heating Ventilation & Air Conditioning.
ISDN: Integrated Service Digital Network
LASER:Light Amplification by Stimulated.
Cable Bending Radius
(j) = 10 x Cable DiameterTube Bending Radius
(j) = 05 x Tube Diameter
