This drawing provides information for civil contractors who need to excavate trenches to lay electricity cables and ducts, regarding trench dimensions and burial depths for different types of cables and ducts.

Further information concerning excavations can be found on our M200 Service Requirements Document.

Please note that any excavations required in the public highway must be undertaken by one of our contractors.

If you require a list of approved contractors please e-mail

M120 Typical Trench Section