| Includes | assembly of structures, switches, circuit breakers, buses, and transformers to switch circuits and convert power from transmission voltage to distribution voltage for utility owned transmission and distribution substations. |
| Alternate Terms/Abbreviations | control house: doghouse. Double-end break: double-side break. Vertical reach: pantograph: semi-pantograph: knee-type switch. |
| See | 13 34 23.23 for fabricated substation control rooms. 26 11 00 for facility substations. 26 13 00 for medium voltage switchgear. 33 73 00 for utility transformers. 33 75 00 for high-voltage switchgear. 33 77 00 for medium-voltage utility switchgear. 33 79 00 for site grounding and lighting protection. 33 79 23 for utility substation grounding. 34 21 16 for traction power substations. |