Definition of the source category.

(a) The electrical transmission and distribution equipment use source category consists of all electric transmission and distribution equipment and servicing inventory insulated with or containing fluorinated GHGs, including but not limited to sulfur hexafluoride (SF 6 ) and perfluorocarbons (PFCs), used within an electric power system. Electric transmission and distribution equipment and servicing inventory includes, but is not limited to: (1) Gas-insulated substations. (2) Circuit breakers. (3) Switchgear, including closed-pressure and hermetically sealed-pressure switchgear and gas-insulated lines containing fluorinated GHGs, including but not limited to SF 6 and PFCs. (4) Gas containers such as pressurized cylinders. (5) Gas carts. (6) Electric power transformers. (7) Other containers of fluorinated GHG, including but not limited to SF 6 and PFCs. (b) [Reserved]