Alabama Power Company
Rules and Regulations for Electric Service
Appendix F
Page 2 of 4
Notes
(1) Single phase 240/120 volt underground service from a pole mounted transformer: Customer must
provide and install specified size schedule 40 conduit from the building service entrance to the base of the riser
pole. The Company will install riser and install cables in customer owned conduit and make necessary
connections.
(2) Three phase 240/120, 208/120, and 480/277 volt underground service from a pole mounted transformer
bank: Customer must provide and install the specified number and size schedule 40 conduit(s) from the
building service entrance to the base of the riser pole. The Company will install riser and install cables in
customer owned conduit and make necessary connections.
(3) Single phase 240/120 volt service from a single phase pad-mounted transformer: Customer must provide
and install specified size schedule 40 conduit from the riser pole to the pad-mounted transformer location.
Customer will provide, install, and own the service entrance cables from the transformer secondary terminals to
the building service entrance. The Company will install concrete transformer pad, pad-mounted transformer,
and primary cables from the riser pole to the pad-mounted transformer and make all cable connections within
the transformer.
(4) Three phase 208/120 and 480/277 volt service from a three phase pad-mounted transformer: Pad-mount
sizes for 208/120 volt service is limited to 1000 kVA. Customer must provide and install specified number and
size schedule 40 conduit(s) from the riser pole to the pad-mounted transformer location. Customer will provide,
install, and own the service entrance cables from the transformer secondary terminals to the building service
entrance. Customer will construct a cast-in-place concrete transformer pad as per the Company’s
specifications. The customer may option for the Company to provide the transformer pad for a price as shown
on sheet 3. The Company may option to install a transclosure to provide 208 or 480 volt grounded wye service.
(i.e. in 4 kV areas) In this case the customer will be billed the equivalent pad-mounted transformer costs.
The “Mini” design 75 kVA three phase pad-mounted transformer is currently available for 208/120 volt and
480/277 volt services and only for the 12,470 volt, 13,200 volt, and 34,500 volt operating systems. A special
fiberglass box pad will be provided by the Company for use with the “Mini” design three phase pad-mounted
transformer. Contact Distribution Engineering Services for other sizes and voltages.
(5) Three phase 240/120 volt service from a transclosure bank. Customer must provide and install the
specified number and size schedule 40 conduit from the riser pole to the transclosure bank location. Customer
will provide, install, and own the service entrance cables from the transclosure bank secondary terminals to the
building service entrance. Customer will construct a cast-in-place concrete transformer pad as per the
Company’s specifications. The Company will fabricate and install the transclosure, transformer bank, and
install primary cables in customer provided conduit from the riser pole to the transclosure location.
(6) Three phase 208/120 and 480/277 volt pad-mounted transformer service to malls and strip type
shopping centers will be provided at no cost provided the project can be served with a 200 amp loop primary
system. Customer will provide all trenching and conduit installation, transformer pads and service entrance
cables.
(7) The cost shown for 4160 / 2400 volt service from a pad-mounted transformer is contingent on the customer
meeting the special requirements regarding cable dimensions, terminations, and other requirements particular
to this service.
(8) The "Customer Qualifying kVA Demand” is used to determine the equivalent overhead service size that
relates to the differential costs shown in the table.
(9) The "Total Fixed Cost Differential" is the UG-OH differential costs associated with those items that are not
affected by underground circuit length, such as riser pole assembly, cable connections, transformer
accessories, etc.
(10) The "Variable Distance Cost" is the UG-OH differential costs associated with underground cables and
overhead wire. “Variable Distance Cost” from Appendix F, Sheet 1 shall be applied to the length of UG circuit
from the base of the riser pole to the nearest practical point of service on the customer’s building. For primary
circuit lengths in excess of the “Maximum Variable Distance”, deemed to be the closest point of service, the
Variable Distance Cost should be used for determining the additional billing to the customer.
(11) The "Special Distance Cost" is the total installed cost of underground cables. This cost is applicable for
underground circuit distance that is installed at the Customers request, that exceed the circuit length to the
nearest practical service point on the building.