Outside Work All work necessary to the assembling, installation, erection, operation, maintenance, repair, control, in- spection and supervision of all electrical apparatus, devices, wires, cables, supports, insulators, conduc- tors, ducts and raceways when part of distributing systems outside of buildings, railroads and outside the directly related railroad property and yards. In- stalling and maintaining the catenary and trolley work on railroad property, and bonding of rails. All underground ducts and cables when they are in- stalled by and are part of the system of a distrib- uting company, except in power stations during new construction, including ducts and cables to adjacent switch racks or substations. All outdoor substations and electrical connections up to and including the setting of transformers and the connecting of the secondary buses thereto. Outside work to include renewable electrical energy sources such as solar photovoltaic, geothermal, wind, biomass, wave, etc., and other distributed en- ergy installations such as fuel cells, microturbines, etc.