Download MEW E101 April 2013 (pdf, 280kb) - NSW Public Works
Download MEW E101 April 2013 (pdf, 280kb) - NSW Public Works
Download MEW E101 April 2013 (pdf, 280kb) - NSW Public Works
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Part 1 - Installation<br />
Instrumentation cables shall be cables that:<br />
i. Carry ELV analogue signals e.g. 4-20 mA dc.<br />
ii. Connect to instruments for the purpose of signalling or monitoring.<br />
iii. Connect to the inputs of PLC's or alarm annunciators.<br />
Cables shall be min. 0.5mm² PVC insulated aluminium polyester screened PVC<br />
sheathed.<br />
A separate 2 core cable shall be supplied for each analogue signal (equal to Dekron<br />
IEB183 type).<br />
Digital signals may use a multi, twisted pair overall screened PVC cable. Each digital<br />
signal shall have its own pair as, common returns are not permitted. Cable shall be<br />
equal to Dekron IEC183 type.<br />
The screen of each cable shall be earthed at the switchboard only.<br />
106.5 Insulated Non-Armoured Cables in Enclosures (TPI)<br />
Cables shall be 0.6/1 kV grade with minimum V75 or XLPE insulation.<br />
106.6 Underground Grade Insulated and Sheathed Non-Armoured Cables (TPS)<br />
Cables shall be 0.6/1 kV grade with minimum V75 or XLPE insulation.<br />
The cables shall have the manufacturer's name and reference and the word<br />
"UNDERGROUND" clearly indented in the sheathing.<br />
106.7 Armoured and Sheathed Cables (Other than Paper Insulated)<br />
Cables shall be 0.6/1 kV grade with minimum V75 or XLPE insulation and shall have<br />
armouring of galvanised steel wire (double or single), steel tapes, or aluminium<br />
strip/wire.<br />
Tape armouring shall not be used to support the cables during installation.<br />
Armouring shall be cleaned, clamped and connected to earth at the origin of the cable. It<br />
shall not be used as an earth conductor.<br />
106.8 Aerial Cables<br />
Cables shall comply with AS 1746 "Hard-Drawn Copper conductors for Overhead Power<br />
Transmission Purposes" or AS 3607 "Bare Overhead Aluminium Conductors Steel<br />
Reinforced", or AS 1531 "Aluminium Conductors for Overhead Power Transmission<br />
Purposes".<br />
Aerial cables attached to buildings shall be insulated. Connections between aluminium<br />
able and copper aerial cable shall be made with a bail clamp having aluminium and<br />
tinned copper connectors.<br />
Where aluminium cables are terminated to copper cables the aluminium cable shall be<br />
physically above the copper cable.<br />
106.9 Special Purpose<br />
106.9.1 Essential Service Cables<br />
Unless other indicated, cables supplying power to designated "Essential Services" shall<br />
consist of MIMS copper conductor copper sheath cables.<br />
Where run horizontally, the cable shall be as high as possible, separately fixed directly to<br />
the building structure (eg underside of slab). Where run vertically, the cables shall be<br />
mechanically protected. Where a number of services cross or follow a similar route the<br />
"Essential Services" cable shall be located at the highest point and closest to the<br />
structural support.<br />
Metal cable fixings shall be used; the use of nylon or plastic material is prohibited.<br />
Page 12<br />
<strong>MEW</strong> <strong>E101</strong>
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