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twin and earth used outside
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<blockquote data-quote="Sidewinder" data-source="post: 217757" data-attributes="member: 9512"><p>Taking Prysmian cable as an example.</p><p></p><p>The sheath is constructed of pvc to BS 7655 type 6.</p><p></p><p>This is covered in BS 7655 Part 4.2.</p><p></p><p>This is general purpose pvc sheathing with a maximum operating temperature of 70 degrees Celsius (BS7655-4.2:2000, table 1)</p><p></p><p>This standard only refers to mechanical properties.</p><p></p><p>There is a raft of other standards in BS7655-0 which refer to the other test methods and requirements.</p><p></p><p>These would need to be checked to ascertain if the sheath material is suitable for being subjected to uv radiation.</p><p></p><p>The cable is however suitable for use (not perhaps installation) between -15 and +70 degrees Celsius.</p></blockquote><p></p>
[QUOTE="Sidewinder, post: 217757, member: 9512"] Taking Prysmian cable as an example. The sheath is constructed of pvc to BS 7655 type 6. This is covered in BS 7655 Part 4.2. This is general purpose pvc sheathing with a maximum operating temperature of 70 degrees Celsius (BS7655-4.2:2000, table 1) This standard only refers to mechanical properties. There is a raft of other standards in BS7655-0 which refer to the other test methods and requirements. These would need to be checked to ascertain if the sheath material is suitable for being subjected to uv radiation. The cable is however suitable for use (not perhaps installation) between -15 and +70 degrees Celsius. [/QUOTE]
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