Okonite Wire Armored Type P-OS Type ITC/PLTC Armored Thermocouple Extension Cable

A Solid Thermocouple Alloy Conductor

B Okoseal Insulation

C Twisted Pair

D Double Faced Aluminum/Synthetic Polymer Backed Tape

E Tinned Stranded Copper Drain Wire

F Rip Cord

G Inner Okoseal Jacket

H Galvanized Steel Served Wire Armor

J Outer Okoseal Jacket

Specifications
Conductors: Solid alloys per ANSI MC 96.1.

Insulation: Flame-retardant Okoseal (PVC) per UL Standards 13 and 2250, 15 mils nominal thickness, 105°C temperature rating.

Conductor Identification: Pigmented insulation on individual conductors

Assembly: Pairs 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 the conductor.

Inner Jacket: Flame-retardant Okoseal per UL Standards 13 and 2250. A rip cord is laid longitudinally under the jacket to facilitate removal.

Wire Armor: A serving of soft annealed galvanized steel wires, SWA, applied with a left-hand lay and 90% coverage.

Outer Jacket: Flame-retardant, low temperature Okoseal per UL Standards 13 and 2250.

Classifications: UL Listed as Type ITC/PLTC Instrumentation Tray Cable/Power Limited Tray Cable for use in accordance with Articles 725 and 727 of the National Electrical Code.

These cables comply with UL 2250 and UL 13 for CL2 and CL3.

Applications
Okonite SWA Type P-OS (Pair/triad - Overall Shield) Thermocouple Extension cables are designed for use as instrumentation and process control cables in ITC non-classified or labeled circuit up to 150 volts and 5 amps (750VA) and in Class 2 or 3 Power-Limited circuits where shielding against external interference is required, but shielding against interference among groups is not required; indoors or outdoors; in wet or dry locations with conductor operating temperatures up to 105°C; in cable trays; in raceways; supported by a messenger wire; under raised floors; for direct burial. Suitable Class I, Divisions 2, Class II, Division 2, or Class III, Division 2 hazardous locations. Also for use as Power-Limited fire protective signaling cable (FPL) per NEC Code 760.

Product Features

Passes the UL 1581 & IEEE 383-1974 vertical tray flame tests.
Sunlight & oil resistant.
UL listed for direct burial.
Individual pairs or triads are color coded for simplified hook-up.
Good noise rejection.
Excellent weathering characteristics.
OSHA Acceptable.
Flexible, easy to handle terminate.
Twisted with 100% shield coverage to reduce electromagnetic noise.
Suitable for low temperature installation of -40°C.

Conductors: 16 AWG
Okoseal Insulation: 15 mils

1-ASA/ISA Type 2-Catalog Number 3-Size AWG 4-Number of Pairs 5-Inner Jacket Thickness - mils 6-Inner Jacket Nominal O.D. - Inches 7-Armor Wires - No. x SWG							8-Nominal Armor O.D. - Inches 9-Outer Jacket - mils 10-Nominal Cable O.D. - (In.) 11-Cross-Sectional Area † (sq in) 12-Approx Net Weight (lbs/1000’) 13-Approx Ship Weight (lbs/1000’)
1	2	3	4	5	6	7		8	9	10	11	12	13
EX JX KX TX	284-20-8181 284-20-8281 284-20-8381 284-20-8481	16 16 16 16	1 1 1 1	35 35 35 35	.25 .25 .25 .25	31 x 24 31 x 24 31 x 24 31 x 24		.30 .30 .30 .30	35 35 35 35	.37 .37 .37 .37	.11 .11 .11 .11	114 114 114 114	125 125 125 125

ASA/ISA COLOR CODE AND LIMITS OF ERROR
ASA/ISA Type	Positive Wire		Negative Wire		Outer Jacket Color	Temperature Range°C	Limits of Error		Nom. Loop Resistance Per 100’ @ 20°C
ASA/ISA Type	Alloy	Color	Alloy	Color	Outer Jacket Color	Temperature Range°C	Standard	Special (1)	Nom. Loop Resistance Per 100’ @ 20°C
EX	Chromel	Purple	Constantan	Red	Purple	0 to 200°C	± 1.7°C		27.8 ohms
JX	Iron	White	Constantan	Red	Black	0 to 200°C	± 2.2°C	± 1.1°C	13.9 ohms
KX	Chromel	Yellow	Alumel	Red	Yellow	0 to 200°C	± 2.2°C		23.6 ohms
TX	Copper	Blue	Constantan	Red	Blue	-60 to 100°C	± 1.0°C	± 0.5°C	12.0 ohms

SX available upon request.

(1) Special grade alloy conductors for JX and TX are available on special order.

Minimum Manufacturing Quantity: is 1000 ft.

† Cross-sectional area for calculation of cable tray fill in accordance with NEC Section 318-9

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 13 and 2250
Insulation Test Voltage (spark test)...........................5000 Volts ac
Dielectric Test Voltage............................1500 Volts ac for 15 sec.
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.