Section 49 – Signals, Lighting and Electrical Systems
12/1/03
49.13
49-2.11.A Metered Service (120/208 Volt, 120/240 Volt)
The metered electrical service will be served from SMUD facilities as shown on the Plans.
Unless otherwise specified, service shall be wired for 120/208 volts or 120/240 volts, three-wire
and single phase as shown on the Plans.
New service enclosures shall be supplied and installed as shown on the Plans.
The service enclosure shall consist of a separate metering section and a service section.
The metering section shall be complete with SMUD approved meter socket, steel socket cover,
and manual circuit closing device.
The meter section shall have a removable cover with the top and front sections welded
together so that it is rain-tight and padlockable. The meter section shall include provisions to
allow SMUD to lock and seal the meter section.
The service enclosure shall be fabricated in accordance with the dimensions shown on
Standard Drawing 5-8.
Mounted in each metered service enclosure shall be the following equipment:
1. Two 2-pole, 120-volt alternating current main breakers with 100-ampere trip and a
rating of 10,000 amperes AIC at 120/240 volts. Each main breaker shall have an
internal common trip. Each pole shall have individual "ON-OFF" control and handle
tie for common operation. Breakers shall be Westinghouse Quicklag C or approved
equal.
2. One single-pole, 120-volt alternating current branch circuit breaker for control circuit
with 15-ampere trip and a rating of 10,000-amperes AIC at 120/240 volts. Breaker
shall be Westinghouse Quicklag C or approved equal.
3. Two single-pole, 120-volt alternating current branch circuit breakers for traffic
signals, each with 60-ampere trip and a rating of 10,000 amperes AIC at 120/240
volts. Breakers shall be Westinghouse Quicklag C or approved equal.
4. Minimum six, single-pole, 120-volt alternating current branch circuit breakers for
street lighting, each sized per the Special Provisions and the Standard Drawings
(minimum 30-ampere trip), and with a rating of 10,000 amperes AIC at 120/240 volts.
Breakers shall be Westinghouse Quicklag C or approved equal.
5. Minimum two, 3-pole, normally open, 60-ampere mercury displacement lighting
contactors. Coil voltage shall be 120 VAC, 60 cycle. Mercury displacement lighting
contactors shall be Dayton Electric Manufacturing Co., Model Number 3X753E, or
approved equal.
6. One oil tight "Hand-Off-Auto" selector switch.
7. One solid copper neutral bus.
8. Incoming terminals (landing lugs).
9. Solid neutral terminal strip.
10. Terminal strips for conductors within the cabinet.
49-2.11.B Metered Service with Encapsulated Step-Down Transformer (277/480 Volt
to 120-240 Volt)
The metered electrical service will be served from SMUD facilities as shown on the Plans.
Unless otherwise specified, service shall be wired for 277/480 volts, four-wire and three phase
as shown on the Plans.



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