Electric Service Standards - CenterPoint Energy

Changes in the 08/23/2012 Revision of the CNP Service Standards Book
1. Changed date of last revision to 08/23/2012 (Page 1).
2. Revised/Corrected Service Standards wording (Sec 405, Page 25).
Revised 1,000 KCMIL to “2‐1,000 KCMIL ”
“When the total cross‐sectional area of all Service Entrance Conductors at a service outlet
location exceed 2‐1,000 KCMIL per phase, a bus bar type weatherhead must be used.”
3. Revised/Corrected Service Standards wording (Sec 423, Page 49)
Revised “Electric Engineering” to “Company Personnel”.
“For all new services, Company personnel must be able to verify that the main disconnect is
open before energizing service.”
4. Revised/Corrected Service Standards wording (Sec513.6, Page 67).
Revised 1,000 KCMIL to “2‐1,000 KCMIL ”
Revised “Electric Engineering” to “Company Personnel”.
“When the service entrance requires conductors greater than 2‐1000 KCMIL per phase, a bus
bar type weatherhead must be used. If the service entrance requires conductors less than or
equal to 2‐1,000 KCMIL per phase, then the Customer may utilize either a bus bar type
weatherhead or a conventional type weatherhead installation (See Illustration 26 –
Weatherhead Arrangement for Outdoor Metering, page 59) with outdoor current transformers.
See ARTICLE 513.7 – 514.2 for outdoor current transformer installation. Typical details of a bus
bar type weatherhead are shown in the Illustrations 27‐30, on pages 68‐71. All bus bar
weatherheads must be approved by Company personnel.”
5. Revised/Corrected Service Standards wording (Sec 513.7, Page 72)
Corrected “500 KCMIL” to “1,000 KCMIL”.
“Service Entrance Phase Conductors for outdoor metering transformer installations may be
made up of one wire (600 KCMIL through 1,000 KCMIL conductor) or two identical wires per
phase (300 KCMIL through 1,000 KCMIL conductors).”
Revised 1,000 KCMIL (2‐500 KCMIL) to “2,000 KCMIL (2‐1,000 KCMIL)”
“Conductors may not be paralleled where the total combined area per phase is less than 600
KCMIL (2‐300 KCMIL) or greater than 2,000 KCMIL (2‐1,000 KCMIL).”
6. Revised/Corrected Service Standards wording (Sec 517, Page 75)
a) Revised “Company personnel” to “Electric Engineering”.
“REQUESTS FOR THE INSTALLATION OF A DISCONNECTING MEANS ON THE LINE SIDE OF A
REMOTE METERING GUTTER MUST BE REFERRED TO ELECTRIC ENGINEERING FOR
APPROVAL OF THE ARRANGEMENT DURING EARLY DESIGN STAGES, PRIOR TO
INSTALLATION OF EQUIPMENT.”
b) Revised “Electric Engineering” to “Company personnel”.
“For all new services, Company personnel must be able to verify that the main disconnect is
open before energizing service.”