Essential Energy crews were called to the scene of the incident at approximately 12.55pm with traffic stopped in both directions for about an hour.

Essential Energy operations manager Macquarie Jamie Warren said crews responded as quickly as possible to ensure the safety of the public and then to restore power for customers affected.

MAP: Where the incident occurred ...

"Crews found a service line, which connected two properties to the electricity network, had been pulled down by the truck," he said.

The highway was closed for a short time to ensure the safety of the public.

"After ensuring the safety of the public, crews work to make repairs and power restored to the affected properties by 3.15pm," Mr Warren said.

If a vehicle contacts the electricity network, occupants should stay in the vehicle if it is safe to do so and Essential Energy should be called immediately on 13 20 80.

"If there is immediate danger, such as a fire, occupants are advised to jump clear of the vehicle - avoiding contact with the ground and vehicle at the same time - until at least eight metres away," Jamie said.

"For their own safety, it is extremely important that the public always treat fallen powerlines as live."