epb Single-Home Construction Instructions

epb Single-Home Construction

SINGLE-HOME NEW SERVICE GUIDELINES

Establish Your Pending Electric Account

• Call EPB at 423-648-1372
• Provide requested information
• Your assigned EPB representative will contact you the following business day

Provide EPB with Your Site Plan

• Site plan should include easement and meter center location
• EPB will determine the appropriate equipment necessary to supply service
• $10,000 of credit (New Growth Construction Credit) wil be given towards the cost of EPB’s construction to serve the home. Any costs in excess of the credit will be applied to the customer in the form of a Sales Order that must be signed before construction can begin.
• An additional $500 of credit will be applied for the installation of a level 2 Electric Vehicle charger. See “EV CHARGER CREDITS& INCENTIVES” for more information.

Let us Know When Your Site is at Final Grade

• Prior to driveway paving, EPB will install facilities up to the meter center on the house
• EPB is responsible for excavating the trench, installing electrical facilities, backfilling the trench with original dirt and minimal compaction
• The customer is responsible for other backfill options and/or disposal of spoils
• After inspection authorities approve a meter center installation, EPB will energize the premise when you contact EPB at 423-648-1372

Other Information

• For structures like barns, pools, pool houses, clubhouses, gates, etc., or for services above 40OA or 240V, please request or refer to EPB’S New Service Guidelines for Commercial Customers
• It is often the case that EPB is not the facility owner or not the only company utilizing the facility. One example is pole ownership could be EPB or another company and communication lines on the poles are not all EPB’s. In these cases, it is the customer’s responsibility to ensure all parties are involved when any relocation/removal of these facilities.

METERING GUIDELINES

General Metering Guidelines

• All meter centers will be served via underground services

• Previous metering installations will not necessarily provide as a guide for future and current jobs

• Meter centers and associated equipment must be mounted on the outside exterior wall or meter pedestal and be accessible by EPB for maintenance at all times

• The centerline of the meter socket must be 4-6 feet above the final grade. 30″ minimum is allowed on underground, low-profile installations

• A3 feet or greater working clearance is required in front of all meter centers and associated metering equipment cabinets

• All fasteners and hardware used to assemble and mount the meter center and equipment must be stainless
  and/or galvanized steel, tamper-resistant and removable using basic tools

• All exceptions to any of the guidelines or policies must be approved by EPB with written authorization

• Pre-wired metering in pad-mounted transformers are not being utilized by EPB

• Limited exceptions must have written approval by EPB prior to installation.

Meter Socket Types

Self-Contained Metering Applications

• The contractor must purchase and install self-contained meter sockets
• Sockets must be the “plug-in (S Base)” type. All three-phase and 320A single-phase meter sockets must have a bypass lever
• All commercial retail sockets must have a bypass lever to allow EPB to remove the meter without service interruption

Instrument-Rated Metering Applications (Overhead Services)

• Overhead services must have written approval from EPB
• The contractor must pick up the meter socket and instrument transformers from EPB
• Contractor to mount meter sockets and instrument transformers per instructions provided
• 1″ conduit must be installed between the meter socket and instrument transformers
• Metering equipment must be installed using lead anchors, toggle bolts or masonry anchor screws. No plastic anchors or shoot-ins are allowed. Screws and bolts must be easily removed using ordinary hand tools.
• Contractor must bond meter socket to the service equipment ground using a minimum of #4 bare solid copper ground conductor
• CTs must be mounted by the contractor with the white dot (H1) electrically facing the source side, or EPB side, of the service
• A minimum of 2.5″ rigid or IMC conduit must be used if service attachment is placed on conduit
• Refer to the following information if a trans-socket or cabinet will be used on an overhead service
• See “Appendix B” for OH reference material

Instrument-Rated Metering Applications (Underground Services)

• The contractor must purchase and install a metering trans-socket cabinet from EPB if the service size is less than or equal to 1200 A. (See “TRANS-SOCKET INFORMATION” section for purchase information.)
• Trans-socket must be installed using lead anchors, toggle bolts or masonry anchor screws. No plastic anchors or shoot-ins are allowed. Screws and bolts must be easily removed using ordinary hand tools.
• Contractor to mount the trans-socket per the instructions provided.
• If service is above 1200 Amps, the contractor must purchase and install an instrument transformer cabinet. The minimum size is 36″x36″x14″, but cabinet must be sized appropriately considering the size of the conductors to ensure no unnecessary stress is placed on the conductors, the cabinet, or the CTs. The contractor must also comply with the NEC bending radius and conduit fill codes and requirements.
• The instrument cabinet must also be installed using lead anchors, toggle bolts, or masonry anchor screws. No plastic anchors or shoot-ins are allowed. Screws and bolts must be easily removed using ordinary hand tools.
• The contractor must mount the instrument transformer bracket to the center of the cabinet’s back plate and follow instructions as provided with the metering equipment. The bracket must be mounted in a way to allow the bracket to be replaced without removing the back plate from the cabinet.
• The instrument transformer cabinet must have a stainless or galvanized steel pad-lockable hasp. The cabinet must also have a hinged cover. All fasteners must also be stainless or galvanized steel. (See “Instrument Transformer Cabinet Information” for more information.)

Trans-Socket Information

• Call 423-648-3427 to schedule a pick-up time
• The location for a pick-up is:
  • EPB Field Services Department – Operations Center 2
  • 1350 E 8th Street
  • Chattanooga, TN 37403
• Trans-sockets are priced at $650 and checks are to be made to EPB
• The dimensions are 37″x 37″x14″ and are for services up to 1200 A
  • The enclosure is to be mounted square and plumb and no alterations are to be made other than holes for conduit
  • No taps are to be made within enclosure
  • Doors and covers must be able to swing freely
  • Place conduit to where no strain will be placed on any of the conductors or equipment
• Hanging bracket is located inside trans-socket enclosure and is there to aid in installation
• Conduit must be placed with 12″ of each corner of the trans-socket
  • Myers Hub must be used if conduit is placed on the top side of the trans-socket to ensure a NEMA 3R rating
• Trans-socket lugs can accommodate up to four 750 MCM conductors per phase
• Line side (EPB) is H1 side of CTs, and load side (customer) is H2 side of CTs

Instrument Transformer Cabinet Information

• CTS, VTS (if required), and meter socket are supplied by EPB at no cost and picked up at same location as transsocket
• Contractor provides the instrument transformer cabinet
  • Cabinet must be stainless, galvanized, powder coated steel or aluminum
  • Aminimum of 14-gauge steel or 10-gauge aluminum must be used
• A hinged door with pad lock hasp for a 5/16″ shank EPB lock must be used on any enclosures housing unmetered conductors
  • No screws or bolts are to be used to remove or open the door
  • Hinges and pad lock hasp must be mounted to be tamper resistant
• No custom keys will be allowed
• Size of cabinet is dependent on the number of conductors per phase, metering equipment, and electrical inspector requirements
• CT&VT brackets must be replaceable without removing the cabinet back plate
• Meter socket to be located adjacent to the instrument transformer cabinet
• Conductors are to be formed to where no strain is placed on any equipment including the cabinet door

Module Home Services

• The meter center must be affixed to a minimum of 6″x6″ pressure-treated wooden temporary pole or similar pedestal unless the modular home is placed on a fixed, permanent foundation
• If underground service is used, meter pedestal must have at least 3 feet of working clearance for access to the meter

Multiple Services

• Any installations where multiple meter centers are used must have permanent labeling with the suite number or load description

  • For example: “Suite A5,” “Building 6,” “Pump B.”

  • Label must match EPB’s account records

  • Labeling must have a 4″ inch or larger textured font, and be attached to the meter socket with two rivets,
    screws or bolts that are either stainless or galvanized steel

  • Labels must be placed to avoid confusion if more than the one-meter center cover is removed

• Each service must have its own instrument transformer cabinet

• For example, EPB does not allow for CTs to be placed in wire troughs serving multiple services instead of installing one cabinet per meter

Meter Equipment Security

• Instrument transformer cabinets, trans-sockets, switchgear, and gutters that contain unmetered conductors and metering equipment must have sealing and/or locking provisions

  • All provisions for sealing and/or locking must be installed in a workman-like and tamper-proof manner using stainless or galvanized hardware

• Unmetered conductors are not to be installed in the same conduit, wire way or junction box as metered conductors
  All locking provisions must be able to accept an EPB seal and/or an EPB lock

  • No other locks may be used that have different keys, codes, etc.

Additional Information

• If multiple conductors per phase are being utilized, all conductors must be the same physical length to the point of delivery with EPB. AIl conductors must also be of the same diameter (neutral must be sized in accordance with the NEC and local electrical inspector). All conductors must also be of the same material. Copper and aluminum cannot be mixed unless they are serving separate switchgear. These requirements are to ensure that no single conductor in a multi-conductor per phase service bears a majority of the load.
• If you have any questions, please contact your EPB representative or call EPB Customer Service at 423-648-1372 and a representative will be assigned to your project.

EV CHARGER CREDITS & INCENTIVES

Residential Applications

• $500 will be added to your New Growth Construction Credit for qualifying for this credit:
  • To qualify, a new home must include electric facilities necessary to support electric vehicle charging:
    240V/40A outlet(s), the minimum standard for supporting Level 2 charging.

Commercial Applications

• For each branch circuit, a $500 credit will be added to the New Growth Construction Credit:
  • A branch circuit is defined as an electric wiring system that extends from the outlets back to the protective device.

Additional EV Charging Incentive

• Apart from the $500 credit per branch circuit, a $2,000 or $500 incentive per Electric Vehicle Charging Port can be obtained for installing appropriate Level 2 or DC Fast Chargers and communication capabilities.
• For more information and qualifying details, please contact our Energy Services group at ES&Cadmin@epb.net to request information concerning EPB’s Commercial Electric Vehicle Service Equipment Incentive or visit our website at epb.com/ev-incentive
• This incentive may be combined with the EV Charg edit

APPENDIX A (UG Reference Material)

Shown above is a metering cabinet for an underground service greater than 1200 A. Customer is responsible for providing the CT cabinet. EPB will provide the CTs and associated mounting brackets. Customer can purchase CT busses for each phase and neutral to provide a pull-point for the conductors. These busses are purchased from EPB and typically have a 5-6 week lead time from the manufacturer. The price of these busses is dependent on the amperage of the service and the number of conductors. Customer is responsible for the correct phasing8, pulling the conductors up to, but not terminating, the secondary bushings of EPB’s transformer, and ensuring that no strain is placed on the CT cabinet or CTs. Customer must also provide means for the CT control wiring to reach the meter center. In this case, see the 1″ connector located on the right side of the cabinet. The meter center is located on the right outside wall of the cabinet.

APPENDIX B (OH Reference Material)

For overhead services containing multiple conductorS per phase, EPB will supply a mounting bracket for the PED connectors as seen above. The customer is responsible for mounting the bracket, leaving sufficient length at the weather head, and correctly marking the load side phasing.

In this scenario, Customer has provIded ample length for EPB Tto connect the service, along with clearly marking the phases. Meter center was mounted to where the center of the meter face will be within 4-6 feet above the final grade.

Thank you for doing business with EPB. We can also help your new construction project with communication services.

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