Okoseal-N^® Type P-OS
Type TC Instrumentation Cable
Single Pair or Triad - Overall Shield
600 Volts - 90°C Dry/75°C Wet Rating
For Cable Tray Use
 

A  Stranded Bare Copper Conductor

B  Okoseal Insulation with Nylon Jacket

C  Twisted Pair/Triad

D  Aluminum/Synthetic Polymer Tape

E  Stranded Tinned Copper Drain Wire

F  Rip Cord

G  Black Okoseal Jacket

Specifications
Conductors: Bare soft annealed copper, Class B, 7-strand concentric per ASTM B-8.

Insulation & Jacket: Flame-retardant Okoseal (PVC), 15 mils nominal thickness, 90°C temperature rating, per UL Standard 1277.

Conductor Identification: Pigmented black and white in pairs, black, white and red in triads.

Assembly: Pair or triad assembled with left-hand lay.

Cable Shield: Aluminum/Polyester tape overlapped to provide 100% coverage, and a 7-strand tinned copper drain wire, same size as conductor.

Jacket: Black, flame-retardant, low temperature Okoseal per UL Standard 1277, 90°C temperature rating. A rip cord is laid longitudinally under the jacket to facilitate removal.

Classification: UL Listed as Type TC Article 340 of the National Electrical Code.

Applications
Okonite's single pair or triad Type P-OS instrumentation cables are designed for use on Class 1 Remote-Control Signaling circuits or where a 600V cable is desired, as instrumentation, process control, or computer cable transmitting signals at levels above 100 milli-volts in circuits
where shielding against external interference is required, but shielding against interference among groups is not required. For use indoors or outdoors; wet or dry locations; in cable trays; in raceways; supported by a messenger wire; for direct burial; in Class I, Division 2, Class II, Division 2 or Class III, Division 2 hazardous locations. Also for use as non power limited fire protective signaling cable (NPLF) per NEC Code 760. Type TC cables can be labeled Okomarine to be used in ABS and Coast Guard approved marine applications.

Type TC is authorized for use in Class I & II, Division 2 hazardous locations.

Product Features

• Passes the UL 1277 & IEEE 383-1974 vertical tray flame tests.
• May be combined with 600V power and control cables in the same tray.
• Sunlight resistant & oil resistant.
• UL listed for direct burial (2/C #16 AWG and larger).
• Individual pairs or triads are color coded for simplified hook-up.
• Good noise rejection.
• Excellent weathering characteristics.
• May be used in approved marine applications.
• Flexible, easy to handle and terminate.
• Twisted with 100% shield coverage to reduce electromagnetic pick-up.
• OSHA Acceptable.
• Suitable for installation in low temperature installations to -40°C.

Authorized Stock Item: Available from our Customer Service Centers. 

† Cross-sectional area for calculation of cable tray fill in accordance with NEC Section 318-8

Length Tolerance: Cut lengths of 1000 feet or longer are subject to a tolerance of ± 10%; less than 1000 feet ±15%.

ELECTRICAL SPECIFICATIONS
Per UL Standard 1277

Conductor Resistance, maximum ohms/1000 ft                                  
..............................................................@20°C............... @25°C
18 AWG.............................................6.09.....................7.04
16 AWG.............................................4.34.....................4.43
14 AWG.............................................2.72.....................2.78
Insulation Test Voltage (spark test)                                                    
18 - 16 AWG....................................................6000 volts ac
14 AWG............................................................7500 volts ac
Dielectric Test Voltage                                                                      
18-16 AWG...................................1500 volts ac for 1 minute
14 AWG.........................................2000 volts ac for 1 minute
Shield Isolation Test                                                                          
Pair to Cable Shield...............exceeds 100 Megohms/1000 ft.
Insulation Resistance Constant @60°F minimum                                
(natural material typical value) ..........................2000 Ohms-1000 ft.
Loop Resistance, nominal (2 conductor) ohms-1000 ft                       
.................................................................@20°C..............@25°C
18 AWG.............................................12.18.................14.08
16 AWG...............................................8.68...................8.86
14 AWG...............................................5.44...................5.56