(a) A deposit or a suitable guarantee may be required of the customer before service will be supplied and from time to time as a guarantee of payment for electricity used. The Company shall not be obligated to supply service until such condition is fulfilled and may discontinue service if the guarantee or increased guarantee is not given when required. The Company shall pay interest on deposits so made in accordance with statutory or regulatory requirements. Upon discontinuance of service the Company shall have reasonable time in which to read and remove its meters and to ascertain that the obligations of the customer have been fully performed before refunding any deposit.
(b) Where temporary service is furnished, customers shall, before service is supplied, deposit with the Company or make suitable guarantee for payment of an amount equal to the estimated bill as determined from the available rate schedule and the estimated cost of making and removing the connection including poles, lines, transformer, meters, other necessary equipment, and all labor and expense incurred less than the salvage value of all materials to be recovered.