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Service Specifications

The Service Point

Sumter EMC's service drop connects to the customer's wiring at the service point. The following drawings show examples for overhead as well as  underground services. The customer’s electrician is responsible for all wiring from the service point through the rest of the building. Construction methods and materials may vary from those depicted below.

Figure 1. Overhead service point.

Figure 1. Service point for an overhead system.4

Overhead services as shown in Figure 1 are used when existing utility distribution lines are overhead and where physical constraints (conductor size, span length, and ground clearances) are met.

Figure 2. Underground service point with external meter.

Figure 2. Service point for an underground system with secondary meter socket installed on side of building.5

Figure 2 is the most commonly used underground construction practice. Almost all residential and small commercial buildings have a meter base installed on an exterior wall, with the service point at the meter base.

Figure 3. Underground junction service point.

Figure 3. Service point for an underground system with secondary junction outside of building.6

Figure 3 is used where the service disconnect is inside the building, and is generally used only in commercial applications. Where the transformer is a significant distance from the building and/or where the NEC requires large conductors, this installation type may reduce the customer's investment in wiring and conduit. The customer must provide and install conduit and conductors between the service point and the service disconnect.

Figure 4. Underground transformer service point.

Figure 4. Service point for an underground system with service point at utility transformer.7

Figure 4 is used in commercial applications where the use of a secondary junction provides no economic benefit. The customer must provide and install conduit and conductors between the transformer and the service disconnect.

(4)NEC 2002 Handbook, Exhibit 100.11, with modifications
(5)NEC 2002 Handbook, Exhibit 230.30, with modifications
(6)NEC 2002 Handbook, Exhibit 230.30, with modifications
(7)NEC 2002 Handbook, Exhibit 230.30, with modifications

Service Drawings

Sumter EMC's guide drawings for service entrance equipment (see links below) provide helpful information for constructing services in conformity with the requirements of the NEC and other applicable codes.  These drawings do not, however, provide all the information required for proper design and construction of service equipment.  Consult with a licensed electrician to be sure your plans meet all applicable codes.

Overhead

  • Service to Mast Above Rooftop
  • Service to Meter Pole
  • Service to Temporary Pole
Service to Mast Above Rooftop
Service to Meter Pole
Service to Temporary Pole

Underground

  • Service to Meter Base on Exterior Wall of Building
  • Service to Meter on Pedestal
Service to Meter Base on Exterior Wall of Building
Service to Meter on Pedestal

©2023 Sumter EMC. All rights reserved. Sumter EMC is an equal opportunity provider and employer.

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1120 Felder Street

Americus, GA 31709

Phone: (229) 924-8041

800 number: 800-342-6978

©2023 Sumter EMC. Your Touchstone Energy Cooperative

  • Home
  • About
    • Sumter EMC
    • Office Locations
    • Leadership
    • Publications
    • Cooperative Principles
    • Touchstone Energy Cooperatives
    • NRECA International
    • Annual Meeting
  • Account Information
    • Starting New Service
    • New Service - Construction
    • New Member Info
    • New Member Survey
    • Privacy Policy
    • Payment Options
    • About My Bill
    • Fees and Rates
    • Prepay
    • Set Alerts for My Account
    • Sales Tax Exemption
  • Member Services
    • Rebates
    • Cooperative Solar
    • Outdoor Lighting
    • Meter Poles
    • Tree Trimming
    • Protection
    • Electric Motor and Equipment Protection
    • Surge Protection
    • Lightning Protection
    • Broadband Info
  • Community
    • Washington Youth Tour
    • Walter Harrison Scholarship
    • Sumter EMC Foundation
    • Youth Outreach
    • Power of Membership
  • Outage & Safety
    • Outage Center
    • Storm Center
    • Energy Tips and Guides
    • Safety Tips
    • Service Specifications
    • Tree & Utility Conflicts