Section 460.3605. Metering electrical quantities.

(1) All electrical quantities that are to be metered as provided in R 460.3301 shall be  metered  by  commercially  acceptable instruments which are owned and maintained by the utility.

(2)   Every reasonable effort shall be made to measure at 1 point all the electrical quantities necessary for billing a customer under a given rate.

(3)    Metering facilities located at any point where energy may flow in either direction and where the quantities measured  are  used   for  billing purposes shall consist of meters equipped with ratchets or other devices to prevent reverse registration and shall be so connected as to separately meter the energy flow in each direction, unless used to implement a utility tariff approved by the commission for service provided under a net metering program.

(4)   Reactive metering shall not be employed for determining the average power factor for billing purposes where energy may flow in either direction or where the customer may generate an appreciable amount of his or her energy requirements at any time, unless suitable directional relays and ratchets are installed to obtain correct registration under all conditions of operation.

(5)   All electric service of the same type rendered under the same rate schedule shall be metered with instruments having like characteristics, except that the commission may be requested to approve the use of instruments of different types if their use does not result in  unreasonable discrimination. Either all of the reactive meters which may run backwards or none of the reactive meters used for measuring reactive power  under  1 schedule shall be ratcheted.

History: 1983 AACS; 2008 AACS.