Original Version

Rule 21.8

21.8    Maintenance means work done on any line or any element of any line for the purpose of extending its life (excepting the replacement of the supporting poles or structures) and includes the replacement, for any reason, of crossarm, pins, insulators, wires, cables messengers, etc., but does not contemplate the addition of elements (excepting pole stubs and guy wires) which will change the identity of the structure (see Rule 12).

Strikeout and Underline Version

Rule 21.8

21.8    Maintenance means work done on any line or any element of any line for the purpose of extending its life (excepting the replacement of the supporting poles or structures) and includes the replacement, for any reason, of crossarm, pins, insulators, wires, cables messengers, etc., but does not contemplate the addition of elements (excepting pole stubs and guy wires) which will change the identity of the structure (see Rule 12).

Lighting Arresters, Set Of, means lighting arresters (one or more) at one location connected to the various conductors of a single circuit.

Final Version

Rule 21.8

21.8    Lighting Arresters, Set Of, means lighting arresters (one or more) at one location connected to the various conductors of a single circuit.