Inside installations means all the pipes, specials, valves, cocks, taps, other fittings and appurtenances laid beyond the water meter within the customers premises and shall include the service pipe and water connections also. Inside installations shall be laid only with prior sanction in accordance with the plan and specifications approved by the Assistant Executive Engineer. No connection shall be established between any water supply main and the inside installations except through the authority, and only after the inside installations have been accepted by the Assistant Executive Engineer. Application form No .VII