Ducts. The use of Street Lighting duct is subject to the approval of the Network Lighting Manager, all ducts shall be installed in accordance with the Manufacturers Specification and shall be inspected before being backfilled by the Authority’s Engineer. Ducts shall not be installed in soft verges. Cables shall be marked with PVC marker tape laid 150mm above cable. All ducts shall be marked with PVC marker tape laid 150mm above the duct. Where approved all cables shall be run throughout their length inside twinwall duct with a ribbed MDPE outer profile and smooth LDPE inner bore with a draw wire inserted as standard. Ducting must meet the requirements of BS EN ▇▇▇▇▇-▇-▇.
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Sources: Standard Specification for Residential, Industrial and Commercial Estate Roads, Standard Specification for Residential, Industrial and Commercial Estate Roads