New Construction Glossary Northern Nevada

ANSI | Appliance shutoff valve | Approved | Associated equipment | AWPA

Backfill | British thermal unit (Btu)

Carbon dioxide (CO 2) | Carbon monoxide (CO) | Clearance | Closed position | Combustion | Complete combustion | Conduit | Corrosion Inhibitor | Customer Construction Representative

Demand | Direct Burial | DOT (Department of Transportation) | Drip loop

Easement | Emergency | Enclosure | Excess flow valve | EUSERC

Face of the pole | Flag lot | Fuel line

Group installation | Guard post | Guying

High Leg

Ignition temperature of natural gas | Igniter | Instrument transformer

Joint utility trench

Keybox or Keycards

Landlocked lot | Listed | Load (Gas)

Main (Gas) | Manual block bypass (circuit-closing block) | Mercaptan | Meter | Meter equipment | Meter jaw | Meter loop | Meter pole | Metering room | Meter set assembly shutoff valve | Meter socket | Methane gas (CH 4) | Municipal or state inspector

Natural gas | Nevada Utilities and Transportation Commission | NEC | NESC | Neutral

Open position

Point of attachment | Point of delivery | Propane gas (C3 H 8)

Rate | Regulator (also Pressure regulator) | Revenue meter | Right-of-Way | Riser

Safety socket | Seal | Secondary voltage | Select backfill | Self-contained | Service | Service drop | Service entrance conductors | Service entrance equipment | Service mast | Service shutoff valve | Standards | Stub

Temporary service | Therm | Trench | Trough or gutter


ANSI - American National Standard Institute

Appliance shutoff valve - A valve readily accessible and operable by the customer, located on the fuel line at or very near the appliance.

Approved - Acceptable to the authority having jurisdiction.

Associated Equipment - As related to metering equipment, such as the meter wiring, instrument transformers, test switches and reactiformers.

AWPA - American Wood Products Association

Backfill - Earth or other material used to refill a trench. Also, the act of refilling a trench.

British thermal unit (Btu) - Quantity of heat necessary to raise one pound of Water one degree Fahrenheit at sea level pressure. The heating quality of the gas.

Carbon dioxide (CO 2) - A gas that is a product of combustion, resulting when carbon unites with sufficient oxygen to produce complete combustion. When natural gas burns completely, it produces carbon dioxide and Water vapor, as well as heat.

Carbon monoxide (CO) - A poisonous combustible gas produced by the incomplete combustion of carbon or reduction of carbon dioxide.

Clearance - A set distance between two objects.

Closed position - Valve is crosswise or at a right angle to the fuel line.

Combustion - The process of burning, requiring three components: fuel, air and ignition temperature.

Complete combustion results in carbon dioxide and Water vapor; harmless.

Conduit - A buried pipe in which the gas service line may be inserted. Conduit helps protect the gas line from damage and allows gas pipe to be replaced without excavating. Conduit is typically installed for road crossings and for service line installations.

Corrosion Inhibitor - Electrical joint compound used to retard oxidation of electrical connections.

Customer Construction Representative - The designated representative of NV Energy, responsible for design and/or coordination of new or revised services to PSE customers. The Customer Construction Representative responds to inquiries on policies, standards, practices, rates and energy utilization.

Demand - The maximum average kilowatt load used by the customer for a specific period of time during the billing period.

Direct Burial - The installation of electrical conductors in a trench, without the use of conduit.

DOT (Department of Transportation) - The State and Federal regulatory agencies that govern gas safety, transportation of hazardous materials and administers regulations related to highway rights-of-way.

Drip Loop - A loop formed in overhead secondary conductors at the weatherhead to prevent water from entering into the service entrance conduit and equipment.

Easement - A document entitling its holder the right to use a specified parcel of property. Easements give NV Energy Company the right to install underground natural gas facilities on private property.

Emergency - A situation in which there is an immediate threat to life or property. In the case of natural gas, an emergency is an immediate threat and/or the uncontrolled escape of gas.

Enclosure - A sealable cabinet designed for surface or flush mounting, and provided with a frame, mat or trim in which doors or removable covers are hung.

Excess flow valve - An excess flow valve (sometimes called an EFV) is a device that is installed in a natural gas piping system that is used to limit the amount of natural gas that travels through the pipe in the event the pipe is severed.

EUSERC - Electrical Utility Service Equipment Requirements Committee

Face of the Pole - The concave side of the largest curvature of the pole. Pole gain appears on the face of the pole.

Flag lot - A parcel of property that does not connect directly to a public right-of-way (street) except for a narrow strip of land that touches the public street and is used to access the property.

Fuel line - Gas piping from the meter to the appliance that is owned and maintained by the customer.

Group installation - More than one electrical device, such as panels, meters, motors, etc, connected together by a common electric circuit.

Guard post - A bollard or post designed to protect the meter installation or transformer from vehicles.

Guying - Cables or braces used to relieve the strain of overhead conductors on masts and poles.

High leg - (Also wild leg, delta leg) The phase leg that is at higher potential to ground than any other two-phase legs. This leg shall be identified in red.

Ignition temperature of natural gas - Natural gas ignites at about 1,100 degrees Fahrenheit.

Igniter - Any device used to light gas. A spark igniter uses an electric spark generated across an air gap for this purpose.

Incomplete combustion can produce carbon monoxide and aldehydes; potentially hazardous.

Instrument transformer - Current and/or potential transformers used in connection with metering equipment to monitor high current loads and/or high voltage potentials.

Joint utility trench - Two or more utilities occupying a common trench.

Keybox or keycards - Permanently installed, locked box with keys enclosed, or a keycard screening monitor mounted on the outside of a building, for accessing the customer's premises to read, install, service, or remove NV Energy meters.

Landlocked lot - A parcel of property that does not connect directly to a public right-of-WAy (street) and must have an easement to cross another parcel of land to access the property.

Listed - Equipment or material accepted by a nationally-recognized testing laboratory (e.g., Underwriters' Laboratories [UL]), inspection agency or other organization concerned with product evaluation. Such organizations maintain periodic production inspections of listed equipment and materials, and state that the items meet nationally recognized standards, or have been tested and found suitable for use in a specified manner.

Load (gas) - The connected load is calculated by totaling the Btu rating for all gas appliances connected to the meter.

Main (gas) - The distribution line (or pipe) that serves as a common source of supply for more than one service line. Owned and maintained by SPPCO.

Manual block bypass (circuit-closing block) - A provision for paralleling the meter circuit, allowing the meter to be removed without interrupting service to the customer.

Mercaptan - An organic chemical odorant added to natural gas to give it a distinctive smell to alert customers in the case of leaks. Natural gas is odorless in its natural state. Mercaptan smells something like rotten eggs.

Meter - A device for measuring and recording the volume of gas used.

Meter equipment - Any equipment associated with measuring electric energy.

Meter jaw - A spring-loaded receptacle installed inside a meter socket, interfacing the terminals of the meter to the source and load conductors of the service.

Meter loop - Any provision in which an electrical meter may be installed. Does not include the service disconnect device.

Meter pole - A pole which supports the metering equipment owned and maintained by the customer.

Metering room - A permanently dedicated and secured room, used for the installation and maintenance of the customer's electrical metering equipment. This room may not be used for storage. The meter room must have a minimum door dimension not less than 2_-8_ by 6_-8_ and must provide all the clearances required.

Meter set assembly shutoff valve - A positive shutoff valve on all metering and/or service regulating facilities. The valve is located immediately upstream (on the service line side) of the meter set assembly.

Meter socket - The mounting device consisting of meter jaws, connectors, and enclosure for accommodating socket-type meters. The mounting device may be either a single socket or a trough to accommodate more than one mounting unit.

Methane gas (CH 4) - A hydrocarbon gas, which is the main component of natural gas (about 96 percent). It is colorless, odorless and flammable; and it's the same substance produced in some swamps, sewers and landfills.

Municipal or state inspector - The qualified representative of a city or the State of Nevada Department of Labor and Industries, who has been authorized by governmental agencies to inspect electrical service installations on their behalf.

Natural gas - A naturally occurring mixture of flammable hydrocarbon and non-hydrocarbon gasses found in porous geologic formations beneath the earth's surface; often in association with petroleum. It's supplied as a fuel for millions of applications worldwide. The chemical composition is approximately 96 percent methane, 2 percent ethane and 2 percent inert gases.

Nevada Utilities and Transportation Commission- Nevada state agency that regulates investor-owned utilities (including SPPCO) and transportation businesses. NV Energy is governed by rules and regulations prescribed by NUTC. The company may petition the Commission to add, change or delete rules and increase or change rates. Customers may request the Commission resolve a dispute with or a complaint against the company.

NEC - National Electrical Code

NESC - National Electrical Safety Code

Neutral - The grounded conductor in a single-phase, three-wire or three-phase, four-wire system. The service conductor that is at zero potential to ground.

Open position - Valve handle is parallel with the line.

Point of attachment - The point at which NV Energy's service conductors are attached to the customer's premises by an approved insulated clevis.

Point of delivery - The location on the customer's premises where NV Energy's circuit and the customer's system are interconnected.

Propane gas (C3 H 8) - A colorless flammable gas found in petroleum and natural gas. It is odorized to make it easy to detect (smells sort of like garlic), heavier than air (specific gravity of 1.5), and it has a Btu of 2544 per cubic foot. (Natural gas contains about 1060 Btu's per cubic foot.)

Rate - Method of charging for energy usage (for therms used).

Regulator (also pressure regulator) - A device to lower the gas pressure. District regulators lower the pressure in mains, meter regulators lower pressure at the meter, and appliance regulators lower pressure at the appliance.

Revenue meter - A device used to total the amount of electrical energy consumed by a customer.

Right-of-way - A collection of easements and/or permits allowing the holder to specific limited use of a parcel(s) of property (such as running a gas main through private properties or a dedicated area for use by the public for travel and utilities). This term refers to the land itself, not the right of passage over it. (See also: Easement)

Riser - The portion of the service that terminates above ground at the structure to support the meter.

Safety socket - A three-phase self-contained meter base socket with provisions to de-energize the meter base without disconnecting the load.

Seal - The locking device used to secure meter and/or service entrance equipment to ensure safety and security for the unit.

Secondary voltage - The lower voltage, after transformation, used to supply the customer with electrical energy. Normally less than 600 volts.

Select backfill - Native soil or soil brought in from another area, free from sharp objects, rocks, scrap building material, and corrosive material.

Self-contained - In reference to meter sockets: a device designed and rated to continuously carry the entire capacity of the service entrance equipment through the meter.

Service - The pipe that carries gas from the main to the customer's meter.

Service drop - The overhead conductors from NV Energy's system to the customer's point of attachment.

Service entrance conductors - Those conductors that extend between the customer's load center and point of delivery.

Service entrance equipment - Service conduit, conductors, weatherhead, meter base, enclosures, service disconnect and load center.

Service mast - The conduit above the meter used to provide mechanical protection for the service conductors and to support the service drop from NV Energy's system.

Service shutoff valve - A convenient shut-off located outside of the customers building. If the meter is located outside of the building, then the meter set assembly shutoff valve may also be the service shutoff valve. In some commercial service applications this valve (buried) may be located in the right-of-way, at the customers property line.

Standards - Authorized design principles applied to engineering, construction and operation of NV Energy's electrical facilities.

Stub - The portion of the service from the main to the property line.

Temporary service - An electrical service installed by NV Energy to provide power to a customer on a temporary basis (12 months or less).

Therm - A therm of gas containing 100,000 Btu's of energy and is roughly equivalent to 100 cubic feet of gas.

Trench - An excavated ditch of specific depth and width into which underground utility lines are installed.

Trough or gutter - A sealable enclosure used as a raceway for metered conductors and as a terminating point for branching to multiple loads.

UL - (Underwriters' Laboratories) A nationally-recognized test laboratory which lists materials it has tested and accepted.