The utility shall not be responsible for damages for any failure to supply service; the interruption or reversal of the supply of electric energy, defective wiring on the customer's premises; or for damages resulting to a customer or to third persons from the use of electricity or the presence of the utility's equipment on the customer's premises. Neither party shall be liable to the other for any failure or delay in case such failure or delay is caused by strikes, the acts of God, or unavoidable accidents or contingencies beyond its control.
('75 Code, § 6.29)