Poly Palace Wire-guard

Poly Palace Wire-guard Poly Palace Wire-guard
Brand: Poly Palace
Product Code: Cable Sleeves
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Availability: 5+ days
Price: $FREE
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Polystyrene and Polyurethane products must not be pushed up against Mains Power Cables. Poly Palace provides free of charge Poly Palace Wire-guasrd conduit sleeves to meet our customers requirements.

Also when dealing with high performance insulation products it is important to remember than any Mains Cable is rated for a specified current capacity and as it approaches that capacity it heats up loosing heat into the open air, Installing high performance insulation products that enclose such cables is not recommended by many insulation manufacturers.

Finally, Mains Cable should be readily accessible by electrical contractors. Poly Palace strongly reccomend running cables below the polystyrene floor insulation, secured with electrical cable clips, where it is clearly visible to electrical contractors, and protecting the cable where it passes through Poly Palace products with Poly Palace Wire-guard.

And as a further example of our commitment to recycling and zero-waste to landfill, these sleeves are constructed from (Clean) washing machine exit pipes nthat are an unwanted plastic waste from scrap metal dismantling of whiteware at Spicer Landfill.

 

our 100% recycled material   The type of mains power cable typically used in New Zealand houses TPS (Tough Plastic Sheathed) contains a plasticiser to keep the cable flexible over it's working life. This plasticiser is not chemically bonded to the TPS PVC, rather it exists in the material as a compund and over time it will migrate into any Polywhich is not chemically bonded

PVC Cables in contact with polystyrene and polyurethane insulating materials
Plasticiser migration from PVC cables when used in contact with polymeric insulating materials is a
potential problem. Plasticisers are used in PVC to give the required physical properties such as flexibility
and toughness.
These compounds are commonly used in TPS (Tough Plastic Sheathed) Power cables, Cat5 & Cat6
data cables and B20 and B95 data cables.
Plasticisers are typically non volatile, high boiling point liquids which are absorbed into the PVC matrix at
elevated temperatures during the compounding process. Plasticisers are not chemically bonded to the PVC
compound and under certain conditions can be extracted from the compound.
Commonly used PVC plasticisers tend to exhibit solubility in polystyrene and polyurethane insulating
materials, As a result of this there will be migration of plasticiser from the PVC compound where there is a
direct contact between the two materials, this causes the PVC on the cable to become harder and more
brittle. There is also potential for plasticiser migration into bituminised building paper, causing the bitumen
to soften and flow.
General Cable also manufactures TPS cables which utilise a PVC compound containing a non migratory
plasticiser, this will not migrate from the PVC when in contact with polystyrene or polyurethane insulating
materials, click here to link to data sheet for non migratory TPS cable.
The rate of plasticiser migration is determined by many factors but is strongly affected by the contact area
between the cable and the thermal insulating material. The migration process would be expected to occur
over a relatively long time frame, there is anecdotal evidence that rapid migration can occur in polystyrene
block houses, portable buildings and chillers. This is due mainly to the large contact area between the
insulating material and the cable.
The service life of PVC insulated and sheathed cables in the above situation are dependent upon the
conditions of exposure and many years may elapse before noticeable deterioration of the PVC occurs.
However, cable lifetime could be significantly effected.
When using cables without non migratory plasticiser it is recommended that there be no direct contact
between the cable and the polystyrene, this can be achieved by installing in a suitable conduit, leaving an
air gap or using a polyethylene or polypropylene tape between the cable and the insulation.

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