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HomeMy WebLinkAbout10 Underground Electric Facilities TDPUD STAFF REPORT December 30, 1994 TO: Board of Directors FROM: Peter L. Holzmelster, General Manager SUBJECT: Policy regarding underground electric facilities AGENDA #10 At the last meeting of the Board of Directors, there was some confusion caused by the format in which the proposed policy on underground electric facilities was presented. We have revised and simplified the format and we hope the confusion is resolved. Attached is a single resolution which, if adopted, would amend three different Chapters of our Code of Policies. The resolution also attempts to clarify the effective date of the policy change and provides a clear manner for handling service applications that are currently in our review system. RECOMMENDATION i recommend adoption of the resolution adopting policy regarding underground electric facilities. PLHIsmc RESOLUTION NO. 95 OF THE TRUCKEE DONNER PUBLIC UTILITY DISTRICT ADOPTING POLICY REGARDING UNDERGROUND ELECTRIC FACILITIES WHEREAS, it is found that there are significant operational and aesthetic benefits to having the electric distribution system placed underground where practical, and WHEREAS, it is the intent of the District to provide consistent, concise and understandable policies, NOW, THEREFORE, BE/T RESOLVED by the Board of Directors of the Truckee Donner Public Utility District as follows: 1. That Section 7.12.025.3 of the District Code of Policies is hereby amended by adoption of the new Section 7.12.025.3 as attached. 2. That a new Section 7.48.010.1 be added to the District Code of Policies as attached. 3. That Chapter 7.56 of the District Code of Policies is hereby amended as attached. 4. That all provisions of the Code of Policies conflicting with these new policies are hereby repealed to the extent that they so conflict. 5. The effective date of this resolution and the policies so enacted shall be the date of adoption of this resolution. With respect to the application of this resolution to requests for service that have been submitted prior to enactment of he r ! resolution, 9&49— re u"602'%r— service if improvement plans have been reviewed and approved by the District Engineer or Planner, as evidenced by a signature on the improvement plans. All other applicants for service shall comply with the policies adopted by this resolution. PASSED AND ADOPTED by the Board of Directors at a meeting duly called and held within the District on the 3rd day of January 1995 by the following roll call vote: AYES: NOES: ABSENT. TRUCKEE DONNER PUBLIC UTILITY DISTRICT By Robert A. Jones, President ATTEST.- Susan M. Craig, Deputy District Clerk smc 7.12.025 Application for Service - New Construction and Upgrades 7.12.025.1 Applications for electrical service shall be defined as an electrical project as used in this rule. 7.12.025.2 Electrical project applications shall be processed in accordance with the Electrical Project Review Guidelines. 7.12.025.3 The applicant shall be responsible for the costs of trenching, backfilling, conduit and other costs as may be outlined in individual development agreements in order to provide electric service for an electrical project 7.12.025.4 The General Manager shall develop operational methods for staff use to implement the intent of this policy which shall be effective as of the date of adoption. (Electric Rule 9, Res. 8617) 7.12.030 Special Cases - When in the opinion of the District an application reveals that unique or special circumstances exist for the proposed electric service, the District may, at its discretion require that the applicant enter into a separate agreement for the provision of such service. 7.12.040 Fraud - Any customer determined by the District's management and/or Board to defraud or attempt to defraud the District shall automatically forfeit all application and connection fees. Unless otherwise reordered, service shall be discontinued where the customer cannot reconnect and shall remain discontinued until customer reapplies for service. Furthermore, all services in this customer's name shall be discontinued and all application and connection fees and all deposits shall be forfeited. 7.12.040.1 Any customer who is a renter of his residence, place of business, or any other location that is served by the District and is determined by the District to defraud or attempt to defraud the District shall automatically forfeit any and all application fees and any deposits held by the District. Unless otherwise ordered, service shall be discontinued where customer cannot reconnect and shall remain discontinued until customer reapplies for service. (Electric Rule 8, Res. 8430) CHAPTER 7.48 ELECTRIC SYSTEM CONSTRUCTION STANDARDS Sections: 7.48.010 Underground Facilities Policy 7.48.020 Underground Electric Supply (GO 128) 7.48.030 Overhead Electric Lines (GO 95) 7.48.010 Underground Facilities Policy 7.48.010.1 It shall be the policy of the Truckee Donner Public Utility District to require all new or rebuild construction to be placed underground wherever practical Special circumstances may dictate undergrounding is not practical and the District reserves the right to determine the practicality of a project 7.48.020 Underground Electric Supply 7.48.020.1 General Order No. 128 of the Public Utilities Commission of the State of California, promulgating and providing rules for underground electric line construction, as amended, is hereby declared to be the minimum and standard requirement for all underground electric line construction and reconstruction hereafter done by, for, or on behalf of the District, as well as for any such construction hereafter accepted or to be accepted into the District system. 7.48.020.2 The adoption of General Order No. 128 shall apply in the future to any and all amendments as may hereafter be ordered by the Public Utilities Commission, and an up-to-date, true and correct copy of said order and rules, with future amendments, shall be kept at the District office at all times. 7.48.020.3 The requirements of said General Order No. 128 shall hereafter be referred to in all bids, plans, specifications and contracts for work done by, for, or on behalf of the District, as well as to construction or reconstruction hereafter to be accepted into the District system. (Electric Rule 24, Res. 8430) 7.48.030 Overhead Electric Lines - 7.48.030.1 General Order No. 95 of the Public Utilities Commission of the State of California contains the minimum and standard requirements for all overhead electric line construction and reconstruction hereafter done by or on behalf of the District, as well as for any such construction hereafter to be accepted in the District system. 7.48.030.2 The adoption of General Order No. 95 shall apply in the future to any and all amendments as may hereafter be ordered by the Public Utilities Commission, and an up-to-date, true and correct copy of said order and rules, with future amendments, shall be kept at the District office at all times. 7.48.030.3 The requirements of said General Order No. 95 shall hereafter be referred to in all bids, plans, specifications and contracts for work done by, for, or on behalf of the District, as well as to construction or reconstruction hereafter to be accepted in the District system. (Electric Rule 22, Res. 8430, 7/14/75) CHAPTER 7.56 SERVICE CONNECTIONS Sections: 7.56.010 General 7.56.020 Requirements 7.56.010 General 7.56.010.1 Service connections It shall be the policy of the Truckee Donner Public Utility District to require all new or rebuild construction to be placed underground wherever practical Special circumstances may dictate undergrounding is not practical and the District reserves the right to determine the practicality of a project 7.56.010.1(A) Overhead service facilities, at secondary voltage, 480 volts or less: In areas supplied by the District's overhead facilities, where the District's distribution pole line is located on a street, highway, lane, alley, or private easement immediately contiguous and at a distance not to exceed 200 feet to the customer's premises the District will, in accordance with the established service connection charges, furnish and install a service drop from its pole line to a point of attachment determined by District personnel, on the customer's building or other permanent support; said support shall be provided by customer. Connection made at the weatherhead connecting the District's service line to the customer's service line shall be made by District personnel. 7.56.010.1(A)(1) After application for electricity and before the customer puts up the service and meter socket, he shall make request for a District employee to come out and mark out on the wall where the service and meter socket are to be located. The District reserves the right to refuse service to any customer not complying with this rule. 7.56.010.1(B) voltage, Underground service facilities at secondary voltages In areas supplied by the District's overhead facilities, where the District's existing distribution pole line is located, and at a distance not to exceed 125 feet to the customer's premises, the District will furnish and install into the customer's trench and conduit, cable from the existing distribution pole line to the customer's service entrance Service connections of District installed cable shall be made by District personnel For distances over 125 feet the customer shall be charged a fee as specified in the District's established connection charges. Di6tFiGt PeFSeRnel. The trench. conduit and backfill shall be furnished by the customer at his expense from a place on the building designated by District personnel to a place on the pole or at the splice box also designated by District personnel The District will provide the secondarX splice box should one be required. 7.56.010.2 The District is not obligated to serve any customer who fails to implement and complete all of the District's requirements for service. 7.56.010.2(A) The electric meter shall not be less than six feet nor more than eight feet from final grade or surface. 7.56.010.2(B) Any new or upgraded service requiring a transformer rated meter, the customer shall provide in addition to the appropriate meter socket an approved box to house current and/or potential transformers, and provisions for mounting test switches. The meter socket and current transformer box may be located in separate boxes or may be housed in one box. (See EUSER standards.) 7.56.010.2(B)(1) New or upgraded commercial and industrial services with Class 100 through Class 320 meter sockets shall contain factory installed test by-pass facilities. 7.56.010.2(C) Any service disconnect switch used on customer's facilities shall be Underwriter's Laboratory approved for service entrances. Consult local inspection authorities for required service switch or circuit breaker size. 7.56.010.2(D) Consult local inspection authorities for required grounding as to conductor size and type. 7.56.010.2(D)(1) Customer's ground and District supplied neutral must connect at some point in the customer's service so as to prevent any possibility of a potential or voltage between the neutral and the ground. 7.56.010.2(E) If a meter becomes inaccessible for any reason, the customer shall promptly move the meter socket and/or service to an accessible location as required by the District. 7.56.010.2(F) If a meter socket and/or electric service comes into disrepair for any reason, the customer shall promptly repair the socket and/or service to applicable standards or codes. The District will assist by disconnecting the District's cables so that work may proceed and will connect to customer's wires, after work is completed and any necessary inspections are made and tagged by local inspection authorities. 7.56.010.3 The District will not connect to any one building more than one service for each voltage classification, either overhead or underground, except for the District's operating convenience or where the customer is required by law to install emergency lighting facilities. Connection of such service to, or disconnection of such service from, the District's lines shall be made only by authorized employees of the District. 7.56.010.4 Service requiring a transformer bank on customer's premises 7.56.010.4(A) Where transformer capacity of 150 to 300 KVA is required and, in the District's judgment, requires the exclusive use of a transformer bank, and such bank cannot properly be accommodated on a District easement or right of way, such customer shall provide a location for a two-pole structure on his property, such location to be approved by the District as to installation of facilities and access for maintenance. If such customer does not provide such a location, then he shall instead provide a site for an outdoor transformer station enclosure or provide an indoor transformer room or vault, in accordance with the provisions of Section 10.5. 7.56.010.4(B) Where transformer capacity greater than 300 KVA is required and, in the District's judgment, service to a single customer requires the exclusive use of a transformer bank with a rating greater than 300 KVA, such customer shall provide a site for an outdoor transformer station enclosure or provide an indoor transformer room or vault in accordance with the provisions of 7.56.010(5) below. 7.56.010.5 Construction of transformer station enclosure or vault If a site for an outdoor transformer station enclosure is provided, the customer shall also, at his expense, construct the necessary concrete pad for the transformer, surface the remainder of the area to be enclosed, and terminate his service facilities at the District transformer terminals. Such site and related improvements shall be according to specifications prescribed by the District. The customer will provide proper fencing for such an enclosure at his expense, subject to specifications prescribed by the District. If a transformer room or underground vault is provided, it shall conform to the requirements of the District pertaining to size, ventilation and access. 7.56.010.6 Primary voltage supply to customer's premises By means of overhead facilities wherever in the District's judgment it is practicable to do so the District will construct a primary voltage supply line by means of overhead facilities from its distribution pole line to the transformer bank or other terminal point installed on the customer's premises. 7.56.020_1 General Meter and Service Requirements for Permanent Electric Service 7.56.020.1(A) Location of meter and service 7.56.020.1(A)(1) Meter and service locations must be marked by the District for the customer prior to customer installing them. In no instance shall the meter be enclosed. 7.56.020.1(A)(2) Any service meter box installed in an underground service shall be a minimum of 200 amperes. 7.56.020.1(A)(3) All electrical services are to be approved and appropriately tagged by the local inspection authorities prior to the District's connection. 7.56.020.1(A)(4) If meter is located above any deck or porch, said deck or porch must be readily accessible from the ground by way of an outdoor stairway. A meter will not be installed in any service above a deck or porch unless said deck or porch is fully constructed. 7.56.020.1(A)(5) If for any reason a meter is higher than approved by the District, the customer shall move the service and/or meter socket to a location approved by District personnel. In the event the service cannot be moved, then the customer shall construct and keep in good repair a walk way complete with railing to the meter location. 7.56.020.1(A)(6) All connections made by the customer at the meter base must be tight. 7.56.020.1(A)(7) In multi-occupancy buildings, all units, apartments, etc. must be identified with their respective meters. The permanent identification must appear on both the meter panel and the entrance to the unit before meters are set. 7.56.020.1(B) Service entrance conductors 7.56.020.1(B)(1) Consult local inspection authorities for size and type of conductors. 7.56.020.1(B)(2) Conductors shall be supplied and installed by the customer with the exception of underground service which is supplied and installed by the District. 7.56.020.1(B)(2)(a) Minimum requirement for conductor insulation is THW 75 degrees C thermoplastic. 7.56.020.1(C) Service conduit 7.56.020.1(C)(1) Consult local inspection authorities for size and type of conduit. 7.56.020.1(C)(2) Minimum size acceptable to the District of underground conduit shall be 2" for a 200 amp panel. For a 400 amp panel, a 3" underground conduit is required. 7.56.020.1(C)(3) Water pipe or water pipe fittings are not permitted. 7.56.020.1(C)(4) The conduit shall be one continuous length from service head to the meter socket. 7.56.020.1(C)(5) The service conduit shall be supplied and installed by the customer. 7.56.020.1(D) Meter socket 7.56.020.1(D)(1) Domestic, single phase, self-contained meter 7.56.020.1(D)(1)(a) 100 or 200 amp, 120/240 volt, 3 wire, with one wire as neutral - four jaw socket 7.56.020.1(D)(1)(b) 100 or 200 amp, 120/240 volt, 3 wire, with one wire as neutral - five jaw socket 7.56.020.1(D)(1)(c) 320 amp, 120/240 volt, 3 wire, with one wire as neutral -special four jaw socket 7.56.020.1(D)(2) Domestic, single phase, transformer rated meter 7.56.020.1(D)(2)(a) 200 to 800 amp, 120/240 volt, 3 wire with one wire as neutral - six jaw socket 7.56.020.1(D)(3) Domestic, 3 phase, self-contained meter 7.56.020.1(D)(3)(a) 100 or 200 amp, 240 volt, a wire, no neutral - five jaw socket 7.56.020.1(D)(3)(b) 100 or 200 amp, 120/240 volt, 4 wire with one wire as neutral - seven jaw socket 7.56.020.1(D)(3)(c) 100 or 200 amp, 120/208 volt, 4 wire with one wire as neutral - seven jaw socket 7.56.020.1(D)(3)(d) 100 or 200 amp, 240/480 volt, 4 wire with one wire as neutral - seven jaw socket 7.56.020.1(D)(3)(e) 100 or 200 amp, 277/480 volt, 4 wire with one wire as neutral - seven jaw socket 7.56.020.1(D)(4) Domestic, 3 phase, transformer rated meter 7.56.020.1(D)(4)(a) 200 to 800 amp, 240 volt, 3 wire, no neutral - eight jaw socket 7.56.020.1(D)(4)(b) 200 to 800 amp, 120/240 volt, 4 wire with one wire as neutral - 13 jaw socket 7.56.020.1(D)(4)(c) 200 to 800 amp, 240/280 volt, 4 wire with one wire as neutral - 13 jaw socket 7.56.020.1(D)(5) The meter socket must be installed in a true vertical plane. 7.56.020.1(D)(6) The meter socket shall be located on the outside of the building and in no instance shall the meter be enclosed. 7.56.020.1(D)(7) If District personnel see that a meter socket and/or service are in need of repair and not being repaired, then the District shall inform the customer of the problem, and a time limit of 90 days shall be given to the customer to make corrections. 7.56.020.1(D)(8) If the problem is not corrected within the time limit, the customer may be disconnected. 7.56.020.1(D)(8)(a) The District reserves the right to shorten this time period if a safety problem exists. 7.56.020.1(E) Service switch 7.66.020.1(E)(1) Any switch used shall be Underwriter's Laboratory Approved for service entrances, and shall be of an approved rain-tight type. 7.56.020.1(E)(2) Consult local inspection authorities for required service switch or circuit breaker size. 7.56.020.1(F) Grounding 7.56.020.1(F)(1) Consult local inspection authorities for required ground conductor size and type. 7.56.020.1(G) Miscellaneous conditions 7.56.020.1(G)(1) All electrical services are to be tagged by the Building Department prior to TDPUD connection. 7.56.020.1(G)(2) Any conditions not covered above must be approved by the County Building Inspector and a representative of the TDPUD before they are installed. 7.56.020.2 Permanent Overhead Service Requirements 7.56.020.2(A) No periscope of service conduit through roof will be permitted with the following possible exceptions: 7.56.020.2(A)(1) A round or octagonal shaped building with a corresponding shaped roof. 7.56.020.2(A)(2) A building with a flat roof designed to roll water and carry the weight of snow. 7.56.020.2(A)(3) It is the customer's responsibility to check first and obtain written approval of any exceptions to this rule. 7.56.020.2(B) The required ground clearances for conductors shall be maintained as per the attached drawing - see drawing "A". 7.56.020.2(C) Customer shall furnish and install an approved rain-tight service or weatherhead at a point suitable for connecting the customer's service entrance conductors to the District's conductors. 7.56.020.2(D) The point of attachment must be located as designated by District personnel. 7.56.020.2(E) Eye bolts or equally secured means are required for the support of the service drop. Eye bolts or clevises will be supplied by the District, but must be installed through a minimum of 2" x 4" backing. Lag screws are not permissible. 7.56.020.2(F) Customer shall leave a minimum of 18" of conductor protruding beyond the weatherhead of an overhead service. 7.56.020.3 Permanent Underground Service Requirements 7.56.020.3(A) All required trench clearances shall be maintained as per California Order 128, unless superseded herein. 7.56.020.3.(B) Telephone and TV cable will be allowed in the same trench, in their respective conduits, with the District's service cable. 7.56.020.3(C) No wafeF-sr—steer-Iii;es aFp,Tmitted—iF; the same +rennh with the 7.56.020.3(D) If a pele as needed, If a pole is needed as a result of not being able to trench, bore, or obtain the necessary- permits for a road crossing, the District will install the riser pole and necessary hardware and anchors The customer shall pay to the District all actual costs for the District to install the pole to include the cost of the pole, hardware anchors, labor and overheads The District will be responsible for the riser on the pole (with the exception of the first 10 feet) and the span of secondary conductor between the distribution system and the riser pole if within the 125 foot limit as referenced in Section 7 56 010 1(B) If the customer's service entrance is greater than 125 feet from the distribution system, the customer will pay to the District, in addition to the charges referenced in this section the fee for additional footage as referenced in Section 7.56.010.1(B). 7.56.020.3(D)(2) Said pole shall be of sufficient height to provide the District's conductors a legal clearance above the roadway. 7.56.020.3(E) Minimum trench depth shall be three feet (36"). 7.56.020.3(F) The trench shall be filled as follows: 7.56.020.3(F)(1) Six inches (6") of sand under conduit. 7.56.020.3(F)(2) Twelve inches (12") of sand above conduit. 7.56.020.3(F)(3) No rocks permitted in backfill over two inches (2") in size. Rule of thumb for sizing - if you cannot completely enclose rock in your hand, it's too big. 7.56.020.3(F)(4) No waste lumber, concrete or other building products are permitted in backfill. 7.56.020.3(F)(5) Failure to comply with the above requirements may result in the customer redigging trench. 7.56.020.3(G) Conduit size shall be in accordance with National Electric Code for size of wire or cable to safely carry the customer's load, unless the N.E.C. is superseded by either state, county or Electric Utility Service Equipment Requirements Committee Rules. However, under no circumstance shall conduit size be smaller than two inches (2") in diameter. 7.56.020.3(G)(1) Minimum radius of bend for elbows shall be twenty four inches (24"). 7.56.020.3(G)(2) All riser conduits shall be waterproofed so no water can get into conduit. 7.56.020.3(G)(3) Risers shall be strapped to the pole with a minimum of three conduit straps for the first ten foot steel section of 2" conduit. Three inch conduit or larger shall be installed on District provided stand-off brackets 7.56.020.3(H) The first ten foot section of conduit up the pole must be rigid steel, Schedule 40 minimum. The remaining conduit may be PVC Schedule 40 or equal. 7.56.020.3(H)(1) The customer shall install such facilities to a point on such pole not less than seven feet (7') nor more than ten feet (10) above final ground level. 7.56.020.3(1) Customer shall provide a 1/4" pull rope in the conduit. The FoF will be Failed up and left at the jeb s;te-. 7.56.020.3(J) Customer will, at his expense, replace any conduit or fitting that is unusable. 7.56.020.3(K) District personnel will inspect the conduit prior to backfilling. 7.56.020.3(L) Separate living units such as apartments, condos, townhouses, etc. located on the same premises shall be served by a maximum of one conduit from any one of the District's poles. In no case shall there be more than two electric conduits on any one of the District's poles. 7.56.020.3(M) The District may elect to provide one conduit on the pole, connected to a splice box located on the property line of two adjacent lots. In this instance, customers of affected lands must make conduit runs to the splice box and not the pole. (Electric Rule 10, MO88-180, MO94-38)