No. The authority has a legal duty to ensure the safety of the highway in accordance with the Highways Act 1980 and the Health and Safety at Work  Act 1974. This also includes obligations under the Electrical Wiring Regulations. Anything which causes a potential obstruction or trip hazard is not permitted. All electrical equipment has be certified and proven/ regularly tested as electrically safe. A power cable running across the footway, even if covered, creates a potential  hazard and equality issues for disabled and vulnerable groups, and if an injury occurs this might result in a liability claim for the homeowner or occupier  and the authority. There are currently no authorised trailing cable solutions in any of the West of England Authorities.