| A | B |
|---|
| Air Handling Unit (AHU) | A device used to condition and circulate air as part of a heating |
| Circuit | The various conductors |
| Circuit Breaker | An electric safety switch that automatically opens a circuit when excessive amperage occurs. |
| Cleanout | A fitting with a removable plug that is placed in plumbing drainage pipe lines to allow access for cleaning out the pipe. |
| Distribution Panel | A box in which the wires from the meter are connected to individual circuit breakers |
| Drain | Any pipe that carries wastewater or water-borne wastes in a building drainage system. |
| Drainage Fixture Unit | A measure of the probable discharge into the drainage system by various types of plumbing fixtures. |
| Drainage System | Piping within a building that conveys sewage |
| Ducts | Pipes |
| Electric Meter | An instrument used to measure electric power. |
| Fenestration | All areas (including the frames) in the building envelope that let in light. |
| Ground | An electrical connection to the earth. |
| Heat Pump | A unit designed to produce forced air or hot water for heating and cooling. |
| Hot Water | Water at a temperature greater than or equal to 110 º F (43º C). |
| Individual Sewage Disposal System | A system for disposal of domestic sewage by means of a septic tank cesspool mechanical treatment to serve a single establishment or building. |
| Lavatory | A fixture that is designed for washing hands and face |
| Main | The principal pip artery to which branches are connected. |
| Nonpotable Water | Water not safe for drinking |
| Outlet | An electrical connection used to plug in devices. A duplex outlet |
| Plumbing Fixture | A device that is connected to the water distribution system and demands a supply of water; discharges wastewater |
| Potable Water | Water free from impurities present in amounts sufficient to cause disease or harmful physiological effects and conforming to the regulations of the public health authority having jurisdiction. |
| Riser | A water supply pipe that extends vertically one story or more to carry water to fixtures. |
| Sanitary Sewer | A sewer that conveys sewage but excludes storm |
| Sewage | Any liquid waste containing animal or vegetable matter in suspension or solution |
| Sewer | A pipe |
| Soil Pipe | A pipe that conveys sewage containing fecal matter to the building drain or building sewer. |
| Stack | Any vertical line of soil |
| Storm Sewer | A sewer that conveys storm water or other drainage but not sanitary sewage. |
| Switch Leg | The electrical conductor from a switch to the electrical device being controlled. |
| Trap | A fitting or device that provides a liquid seal to prevent the emission of sewer gases without materially affecting the flow of sewage or wastewater through the trap. |
| Valve | A fitting that is used to control the flow of fluid or gas. |
| Vent Pipe | A vertical pipe installed to provide circulation of air to and from any part of the drainage system. |
| Water Closet | A water-flushing plumbing fixture |
| Water Distributing Pipe | A pipe that carries water from the service to the point of use. |
| Water Heater | Any heating appliance or equipment that heats potable water and supplies such water to the potable hot water distribution system. |
| Water Meter | A device used to measure the amount of water that goes through the water service. |
| Water Service | The pipe from the water main or other supply to the water-distributing pipes. |
| Watt | A unit of measure of power. |
