§ 61.1. Definitions.

 The following words and terms, when used in this chapter, have the following meanings, unless the context clearly indicates otherwise:

   Customer—A party supplied with steam service by a public utility.

   Degree day—A unit used in estimating quantities of fuel and power consumption based on a daily ratio of consumption the mean temperature below 65°F.

   Main—The pipe of a public utility system, excluding service lines, located in a public highway, street, alley or private right-of-way, and used in transporting steam.

   Pounds of steam—The quantity of steam supplied, measured in pounds and equal to the same amount of water, which would result from condensing the steam used by the customer.

   Public utility—Persons or corporations owning or operating equipment or facilities in this Commonwealth for producing, transmitting, distributing or furnishing, steam to or for the public for compensation.

   Service line—Connecting distribution facilities or pipelines of the utility. Service lines may be of either of the following types:

     (i)    Low pressure—The distribution facilities or pipeline extension of the utility which connect a steam main in the public highway or right-of-way of the utility with the inlet connection of the service line of the customer.

     (ii)    High pressure—The distribution facilities or pipelines of the utility which connect the facilities of the utility with the service line of the customer.

   Service line of the customer—The pipe of the customer which extends from the utility service line to the point of utilization.