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Control and instrumentation cables -- Specification for polyethylene insulated cables
This part of PAS 5308 specifies requirements for and dimensions of **polyethylene (PE) insulated control and instrumentation cables** in multipair construction, with or without screens, and optionally incorporating a lead sheath and single wire armour.
It categorizes cables into:
type 1: PE insulated and PVC sheathed;
NOTE These cables are not recommended for underground burial.
type 2: PE insulated, PE bedded, single wire armoured and PVC oversheathed;
type 3: PE insulated, PVC bedded, lead alloy sheathed, single wire armoured and PVC oversheathed.
The cables are suitable for operation at voltages up to and including 300 V r.m.s. core to earth and 500 V r.m.s. core to core (i.e. 300/500 V). These cables are not primarily intended for direct connection to a low impedance source, such as the public electricity supply.
NOTE 1 Guidance on the safe handling, especially at low temperatures, for PVC sheathed cables is given in Annex A.
NOTE 2 Guidance on use is given in Annex B. It includes guidance on installation and which cables under certain conditions could be operated at 600/1 000 V.
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