Standard Requirements for the Depth of Optical Cable Crossing Trench
47 specifies 18 inches as the minimum depth for direct burial of network-powered broadband communication systems, which includes fiber optic cables. However, this represents the absolute minimum, and most professional installations exceed this requirement. Underground cables are pulled in conduit that is buried underground, usually 1-1. specifications under which the various work for trenching & laying of optical fiber cable are to be executed by the Vendor. However, simply hitting this depth isn't enough to guarantee your network survives. The purpose of this document is to detail Northern Powergrid (the 'Company') requirements for; cable locations in trench layouts, that apply to Company staff, their contractors and others (the 'Installer') installing network infrastructure to be adopted by the Company at all voltage levels (LV up.
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