2011 Electric Service Requirements Manual, 2nd - Pacific Power

2011 Electric Service Requirements, 2 nd Edition
Section 7
7.7 Underground Service
7.7.1 General
Call before you dig. See Table 1.12 for contact information.
Underground service can be provided to the customer from either an overhead distribution
system or an underground distribution system.
The Power Company owns and maintains the underground service lateral from its
distribution line to the customer’s service point. The Power Company also owns and
maintains the meter. The customer owns the meter socket, the meter base, and all wiring
beyond the meter socket.
Special rules may apply in some cities where local ordinances specify underground
service. Customers in these areas should consult the Power Company.
Installation requirements for underground service are listed below. These requirements are
in addition to the general requirements given in Section 7.6. For requirements relating to
specific underground installation configurations, see Section 7.7.2, Underground Service
to Wall-Mounted Meters, or Section 7.7.3, Underground Service to Free-Standing Meter
Bases.
Requirements:
1. Trench, backfill, compaction, and, where required, surface restoration shall be
provided as defined in Section 6.
2. An appropriate underground facility location shall be arranged before trenching.
3. The customer shall consult the Power Company to determine the conduit location
adjacent to a Power Company pole, transformer, or junction box. The customer shall
provide and install all conduit from the meter socket to the Power Company’s point of
attachment. See Section 6.2 for conduit requirements. The customer shall not install
any conduit within two feet of the pole, unless requested by the Power Company.
The Power Company will install the appropriate size service conductor from its
distribution line to the service point.
4. The Power Company reserves the right to connect the service lateral at the meter base
or to make a connection in the junction box.
5. Potential surface or subsurface problems that may damage the Power Company’s
facilities shall be identified and corrected. This may include, but is not limited to,
surface or sub-grade water flows.
6. A slip joint shall be provided in the riser below the metering enclosure in areas where
frost heaves and settling are likely to pull the surface-mounted meter base from the
wall.
Figure 7.7.1 shows the installation of an underground service extension from the
transformer to the house.
This manual shall be distributed and interpreted in its entirety. Individual pages will not represent all the requirements necessary for an installation.
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