Automated Meter ReadingAn automated method of reading electric registers (indexes)
Replacing major components or any integral part of a meter socket, current transformer cabinet, riser, mast, line or load side conductor, relocating electric service equipment, upgrading from fuses to breakers (including storm damage).
AUTHORIZED CLOSED LOOP
Authorized use of electric service that is temporarily not being metered.
CLASSIFICATION OF METERING
Commercial, Industrial and Residential
COLD SEQUENCE METERING
A 10,000 amp fault current limiting fuse disconnect ahead of the meter, located on the same wall as the meter within 2 feet of the meter.
HOT SEQUENCE METERING
The electric meter is connected directly to the service conductors without the use of a fault-current limiting disconnect or meter safety-switch device between the electric meter and the supply source.
Output pulses (KYZ) generated by the electric meter for use by the Customer.
(Wild or Power leg)
The phase having the higher phase voltage to ground on a 4-wire delta-connected service, where the midpoint of one phase winding is grounded.
An instrument transformer intended for use in the measurement or control of a circuit and designed to have its primary winding connected in parallel with the circuit.
The service mast is the conduit containing the service-entrance conductors where the point of attachment and the connection between the service drop and the service-entrance conductors is located above the roofline. The conduit extends to a point, and the weather head is located, above the roof eave. The conduit passes through the eave of the building or extends past the roofline without passing through the eave. The means of attachment is attached to the service mast.
The service riser is the conduit containing the service-entrance conductors where the point of attachment and the connection between the service drop and the service-entrance conductors is located on a pole or below the roofline of the building being served. The conduit extends to a point, and the weather head is located, below the roof eave. The means of attachment is secured to the pole or building and is not attached to the service riser.
POINT OF ATTACHMENT
The point at which the service-drop conductors are attached to a building or other structure.
Temporary unmetered electric service.
Maximum voltage deviation from average voltage.
The operating Companies of Xcel Energy
CONDUIT or DUCT
Standard tubular material used for mechanical protection of electrical systems which may be exposed, buried beneath the surface of the ground, or encased in a building structure as required.
Any person, company or corporation acting under contractual agreements for either the Company or for the customer.
CURRENT TRANSFORMER (CT)
An instrument transformer designed for the measurement or control of current.
Electric Metallic Tubing(NEC)
Galvanized Rigid Conduit(NEC)
Intermediate Metallic Conduit(NEC)
The electrical inspector of the Public Authority.
ISOLATED TRANSFORMER BANK
A transformer bank which provides electrical service to a single customer.
MEANS OF ATTACHMENT
Fittings used to attach service-drop conductors.(Screw knob, clevice, etc)
The equipment necessary to measure the customer’s electric energy use and demand including meter socket, instrument transformers, protective device and meter.
MULTIPLE METER CENTER
A pre-assembled multiple metering unit or fabricated meter center using meter sockets where two or more customers are metered at a common location.
NATIONAL ELECTRICAL CODE
A publication of the National Fire Protection Association, Inc.
NATIONAL ELECTRICAL SAFETY CODE
A publication of the Institute of Electrical and Electronic Engineers, Inc. as adopted by ANSI.
Designation of the value of the normal effective difference in potential between any two appropriate conductors of the circuit.
Point of Delivery
Point where the Company’s electric facilities are first connected to the electric facilities of the customer.
Metering of service voltages above 480V nominal.
Any channel for holding bus bars, cables, or wires, which is designed for this purpose.
Metering of services used for the exclusive use of the individual customer for domestic purposes.
That part of the Company's distribution system, which connects the secondaries of the Company’s distribution transformers to the service drop or service lateral.
The furnishing of electric energy for the exclusive use of the individual customer.
The overhead service conductors from the last distribution pole or other aerial distribution support to and including the splices connecting to the service-entrance conductors at the building or other structure.
The service conductors between the terminals of the customer’s service equipment and the point of connection to the service drop conductors.
Necessary equipment, usually consisting of a circuit breaker or fuseable disconnect switch and their accessories,located near the point of entrance of the supply conductors to a building and intended to constitute the main control and means of cutoff for the supply to that building.
The underground service conductors between the Company secondary distribution system and/or transformer terminals and the connection to the service-entrance conductors in a terminal box or meter socket located outside the building wall. Where the meter is located in the building and no terminal box exists outside the building, the point of connection shall be considered the point of entrance of the service conductors into the building.
When does the Blue Book apply?
On any New, rewired, altered, or repaired wiring installations intended for connection to the Company's distribution system
What constitututes "altered"
Per Chuck, if customer substitutes "like for like", it isn't altered. If upgrading, it is altered.
Can GRC masts bend?
(note: ok to use PVC to roofline, then GRC above roof)
What material must risers be?
Any per NEC.
What color is the high leg on a 480 service?
Does NESC supercede NEC?
The Electrical Inspector
To determine which BB rules apply, what are the 4 things you should ask yourself?
1- Self Contained or TR?
2- OH or UG?
3- Single phase or poly phase
4- Residential or Commercial
The PUC requires we provide voltage within what percent of nominal voltage?