INFORMATION & REQUIREMENTS ELECTRIC SERVICE - NStar

SKETCH 11
Padmounted Transformer Protection From Vehicular Traffic
SKETCH 12
Temporary Service Structure for Service 200 Amperes or Less
Service Structure 3' Min. in Ground
Approved Weatherhead
Service Drop Cable
(Max. Span 100')
4
APPROX.
4' TO TOP
OF BRACE
See
Note 2
4
4
Service Entrance
Cable
All Wood
Braces 2"x4"
Meter
10' MIN
NSTAR Electric shall:
A. Make service drop
cable connection to
its distribution system
1' Max.
B. Furnish, install, and
maintain the meter
APPROX.
5'
Ground
Conductor
APPROX.
5'
Buried Ground
Rod
All Stakes
(Wood)
2"x4"x3'
1. The above specified clear area distances to buildings or landscaping
shall be maintained to: inspect, provide access, perform switching and
ventilate the transformer.
2. If no curb exists, or transformer is located closer than 10 feet to the
traveled way, protective vehicle posts shall be installed on exposed side
as specified.
3. Vehicle posts shall be 4 inches galvanized steel pipe minimum, filled
with concrete and extend 42 inches above and below grade. Larger
diameter posts may be required for some installation.
4. Contact NSTAR to ensure transformer meets the minimum distances
to doors windows, fire escapes, air intakes and walls.
120
1. 6 inches X 6 inches timber shall extend into ground a minimum of
3 feet.
2. Service structures for road crossings must be of sufficient height to
maintain an 18 feet minimum road clearance. If drop does not cross
street, clearance may be reduced to 12 feet.
3. All timbers to be sound and free of knots.
4. Minimum of 4-10d nails or larger at each joint.
5. Grounding conductor shall be stapled to timber at frequent intervals.
6. Equivalent structure may be used with the approval of NSTAR.
7. Approved manual bypass required.
121