| Define Electrical Service | The electrical components that are used to connect the serving utility to the premises wiring system |
| Define Raceway System | Enclosures that house the conductors in an electrical system (such as fittings, boxes, and conduit). |
| Define Rough-in | The beginning stage of wiring that involves the installation of the panelboard, raceway system, wiring, and boxes |
| Define substation | An enclosed assembly of high voltage equipment including switches, circuit breakers, buses, and transformers, that connects the power generation facility to the grid and through which electrical energy is passed in order to change its characteristics, such as stepping voltage up or down, changing control frequency, or other characteristics. |
| Define trim-out | The final stage of wiring that involves the installation and termination of devices and fixtures. |
