Blue Book

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Author:
electric
ID:
125327
Filename:
Blue Book
Updated:
2012-10-09 16:19:34
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Blue Book
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Blue Book
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  1. AMR
    • Automated Meter Reading
    • An automated method of reading electric registers (indexes)
  2. Altered
    • 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).
  3. AUTHORIZED CLOSED LOOP
    Authorized use of electric service that is temporarily not being metered.
  4. CLASSIFICATION OF METERING
    • Commercial, Industrial and Residential
  5. 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.
    • (Cordova's definition)
  6. 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.
  7. DATA PULSES
    Output pulses (KYZ) generated by the electric meter for use by the Customer.
  8. HIGH-LEG
    (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.
  9. VOLTAGE TRANSFORMER
    (VT)
    • 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.
  10. SERVICE MAST
    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.
  11. SERVICE RISER
    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.
  12. POINT OF ATTACHMENT
    The point at which the service-drop conductors are attached to a building or other structure.
  13. CLOSED LOOP
    Flat Tap/Jumpered
    Temporary unmetered electric service.
  14. VOLTAGE UNBALANCE
    Maximum voltage deviation from average voltage.
  15. COMPANY
    The operating Companies of Xcel Energy
  16. 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.
  17. CONTRACTOR
    Any person, company or corporation acting under contractual agreements for either the Company or for the customer.
  18. CURRENT TRANSFORMER (CT)
    An instrument transformer designed for the measurement or control of current.
  19. EMT
    • Electric Metallic Tubing
    • (NEC)
  20. GRC
    • Galvanized Rigid Conduit
    • (NEC)
  21. IMC
    • Intermediate Metallic Conduit
    • (NEC)
  22. INSPECTOR
    The electrical inspector of the Public Authority.
  23. ISOLATED TRANSFORMER BANK
    A transformer bank which provides electrical service to a single customer.
  24. MEANS OF ATTACHMENT
    Fittings used to attach service-drop conductors.(Screw knob, clevice, etc)
  25. METER/METERING EQUIPMENT
    The equipment necessary to measure the customer’s electric energy use and demand including meter socket, instrument transformers, protective device and meter.
  26. 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.
  27. NEC®
    • NATIONAL ELECTRICAL CODE
    • A publication of the National Fire Protection Association, Inc.
  28. NESC®
    NATIONAL ELECTRICAL SAFETY CODE

    A publication of the Institute of Electrical and Electronic Engineers, Inc. as adopted by ANSI.
  29. NOMINAL VOLTAGE
    Designation of the value of the normal effective difference in potential between any two appropriate conductors of the circuit.
  30. Point of Delivery
    Point where the Company’s electric facilities are first connected to the electric facilities of the customer.
  31. PRIMARY METERING
    Metering of service voltages above 480V nominal.
  32. PVC
    • Polyvinyl Chloride
    • (NEC)
  33. RACEWAY
    (gutter)
    Any channel for holding bus bars, cables, or wires, which is designed for this purpose.
  34. RESIDENTIAL METERING
    Metering of services used for the exclusive use of the individual customer for domestic purposes.
  35. SECONDARY CONDUCTORS
    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.
  36. SERVICE
    The furnishing of electric energy for the exclusive use of the individual customer.
  37. SERVICE DROP
    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.
  38. SERVICE-ENTRANCE CONDUCTORS,
    OVERHEAD SYSTEM
    The service conductors between the terminals of the customer’s service equipment and the point of connection to the service drop conductors.
  39. SERVICE EQUIPMENT
    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.
  40. SERVICE LATERAL
    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.
  41. When does the Blue Book apply?
    On any New, rewired, altered, or repaired wiring installations intended for connection to the Company's distribution system
  42. What constitututes "altered"
    Per Chuck, if customer substitutes "like for like", it isn't altered.  If upgrading, it is altered.
  43. Can GRC masts bend?
    • Yes
    • (note: ok to use PVC to roofline, then GRC above roof)
  44. What material must risers be?
    Any per NEC.
  45. What color is the high leg on  a 480 service?
    Purple
  46. Does NESC supercede NEC?
    Who enforces?
    Yes

    The Electrical Inspector
  47. To determine which BB rules apply, what are the 4 things you should ask yourself?
    • Is it:
    • 1- Self Contained or TR?
    • 2- OH or UG?
    • 3- Single phase or poly phase
    • 4- Residential or Commercial
    •  
  48. The PUC requires we provide voltage within what percent of nominal voltage?

    What is the company's goal? 
    +/-  5% (116v to 124v)

    +/- 3% (BB pg 65)

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