Price (Per FT.)
18 AWG - 16 AWG Class B stranded bare copper per ASTM B-3 and B-8
Flame-retartdant Cross-linked Polyethylene (XLPE)
SHIELDING Individual and overall 100% coverage, aluminum/polyester foil shield
JACKET: Black sunlight and moisture resistant Polyvinyle Chloride (PVC)
TEMPERATURE RANGE: -30°C to 90°C; (90°C Dry/90°C Wet)
SUNLIGHT RESISTANT: Yes
DIRECT BURIAL: Yes
VOLTAGE RATING: 600V rms, Max
- UL Standard 1277 Type TC-ER
- NEC Article 336
- Passes UL 1685 Flame Test
- Passes IEEE 383 Flame Test (70,000 btu)
- ICEA S-73-532
- ICEA S-95-658 (WC70)
- EPA 40 CFR, Part 26, Subpart C, heavy metals per Table 1, TCLP method
Tray Instrumentation Control Cable XLP/PVC Shielded Pairs Overall Shield (SPOS) 600V
This Tray Instrumentation Control Cable is made of a bare copper conductor which is stranded and with a rating of 18AWG to 16AWG. Copper is preferred for its faster and efficient electrical conduction. This conductor is further stranded to enhancefolding and unfolding by making it more flexible hence longer durability. Stranding makes the conductor thicker thus lowering the resistance of the conductor.
The copper conductor is insulated with a Cross-linked Polyethylene (XPLE) material. XPLE has very good insulation features, it is a thermoplastic compound which is very versatile and flexible with great resistance to corrosion and chemicals. it is abrasion proof and tough with high physical and mechanical strength thus giving the cable a longer life span.
This cable has 100% cover of aluminum/polyester as the shielding material. The cable has to be shielded because the high voltage power in small systems generate electromagnetic fields which may impede flow of current, the shield protects the underlying conductor from the adverse effects of these magnetic fluxes.
The annealed cables are then covered with a Polyvinyl Chloride (PVC). PVC is an organic compound with thermoplastic properties making it a good water, weather, UV lights and abrasion proof. In addition it is very flexible and easy to strip during installation.
This cable can survive in sunlight and also when buried.
Approvals and Certifications
• It is stated in the NEC Article 336
• It qualifies the UL 1685 Flame Test and IEEE 383 Flame Tests
• Approved by ICEA S-73-532 and ICEA S-95-658
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FAQ - Instrumentation cable
How to identify shielded tray cable POS (paired overall shield) and SPOS (shielded pairs overall shield)?
It is necessary that you are able to identify your cables so that you can make informed choices, especially when you want to place an order. First of all you must know about the wire size, which will tell you how big the conductor is and it is measured in AWG (American Wire Gauge). The insulation for the conductors will usually come in EPR or PVC. POS cables will have an overall shield while SPOS will have shielded pairs with an overall shield.
Are POS/SPOS shielded tray cables the right choice for a conduit system?
Yes, they are but there are also many other cables available in the market that are suitable for a conduit system. However, these cables are economical and they come with a sheath that is virtually impermeable. Most of these cables come with PVC or EPR with TC-ER, individual shielding that comes with 100% coverage.
What are the different types of shields of POS and SPOS cables?
There are different types of shields available for both the POS and SPOS cables. The most common types of shields available in the market are the PVC flame retardant ones. You might also see ones with “ER” (Extended Run) which will have the same crush and impact specifications as that of an UL Type MC cable. You can also find TPE, EPR, CPE and Haloarrest jackets for shielded tray cables.
Why is an overall shield important?
An overall shield will be considered important only when the shielded tray cables are used under the following conditions –
- Extreme environmental conditions –humidity level, temperature of work area
- Installation method - especially if it has to be buried or has to be outdoors
- Exposure to certain elements like oil or grease
- High risk of fire
What is the difference between a POS and SPOS?
POS simply means that the cable has a single pair with an overall shield or jacket. While SPOS is a cable that has shielded pairs that in turn are covered with an overall shield or jacket. Both types are used for wet and dry locations and also for any type of indoor and outdoor applications.
Is the insulation thickness a vital deciding factor for choosing a shielded cable?
The insulation thickness is a deciding factor for any type of cables, regardless of whether they are shielded or unshielded. It pertains to the conductor specifications, the voltage that it will be required to work under and the strength of the cable. Also, when the insulation is thick, it will affect the flexibility of the cable.