Residential Overhead Electrical Service Upgrade
BASED ON THE 2010 CALIFORNIA ELECTRICAL CODE AND PG&E GREEN BOOK
Prior to this inspection, all required sequential inspections and correction notices must be completed.
This is not an all-inclusive list and additional items may be required as determined during the inspection.
Permit documents on site
PG&E application number on site
Verify correct permit description for service amperage.
PANEL LOCATION
• 30” wide x 36” deep level and unobstructed working space in front of panel (not in a “dog house”. CEC 110.26.A
• Meter socket located between 48”min and 75” max from grade. PG&E
• Panel located in front of building requires Zoning approval. OAK
• May not encroach on a 9’ wide or less driveway. OAK
• Where subject to vehicle damage: 2 -3” diameter concrete filled bollards are installed (min 9’ wide driveway is maintained. PG&E (Exempted in recessed panel applications)
• Panel is located at least 3’ form any property line when located on side of building. CEC 110.26
• Provides 6” min distance from where gas service enters the building. PG&E
• Maintains 18 min distance form gas riser. PG&E
Located 8” min from building edge. PG&E
SERVICE ENTRANCE
• Riser min. 1-1/4” diameter rigid steel or 2” rigid aluminum. PG&E
• Heavy duty Riser straps within 36” of service enclosure and every 36” after, using 3/8” x 3” min. lag screws directly attached
to building framing. PG&E
WEATHERHEAD
• Maximum 18” beyond eave strap (no couplings)
• Periscope 18” behind building wall facing the service line.
• Located a max 48” beyond any roof line (service drop conductors travel over roof limited to 48”)
• Riser braced if over 30” from roof line OAK
METER MAIN AND SUB-PANELS
• Suitable for use as service equipment CEC230.66
• Main Service Disconnecting means rated not less than 100 amps, 3 wire. CEC 230.79.C
• Main Service disconnects breaker max 6’-7” from level grade. CEC
• All breakers permanently labeled.
• Knob and Tube wiring limited to 15amp CE 240.4
• Arc Fault breakers per CEC 210.12 includes family room, dining room and living rooms, parlors, libraries, dens, bedrooms,
sunrooms, recreation rooms, closets, hallways or similar
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Residential Receptacle Requirements (General)
(2010 California Electrical Code)
• Feeders to existing sub-panels rated for required load
• Edison-Base fused sub-panels with new feeders are modified to comply with CEC 240.51 & 240.54. Retrofitted to accept
S type fuses permanently.
• Working space area and headroom for new sub-panels per CEC 110.26
GROUNDING
• 1/2” grounding rod (under 200 amps) or 5/8” (for 200amps) installed near service equipment and driven a minimum of 8’
into the ground.
• Single piece #6 (under 200 amps) or (#4 for 200 amps) copper conductor connecting Neutral
• Bus, Grounding rod and Metallic main water service within the first 5’ after entering the building.
• “Acorn” clamp used for grounding electrode conductor to grounding bar
• “Weaver” clamp used for connection to water main.
• For grounding of non-metallic water services use secondary bar
• Water heater bonding using a #6 copper wire between hot and cold water lines and gas supply line.
SERVICE ENTRANCE CONDUCTORS
• Conductors identified at both ends.
• Conductors sized for load and entrance riser for capacity:
CU
Rigid
AL
Rigid
100A
4
1-1/4”
2
1-1/4”
125A
2
1-1/4”
1/0
1-1/4”
150A
1
1-1/4”
2/0
1-1/2”
175A
1/0
1-1/4”
3/0
1-1/2”
200A
2/0
1-1/2”
4/0
2”
• Minimum 18” long conductor length beyond the weather head. PG&E
• Minimum 12” separation from communication lines. PG&E
• Minimum 36” distance from operable portions of windows, balconies and decks. PG&E
• Minimum 12” on top of operable windows. PG&E
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Service Conductor Ground Clearances
and Service Drop Clearances
SERVICE CONDUCTOR GROUND CLEARANCES
SERVICE DROP CLEARANCES
Clearances from doors and decks
Clearances from windows
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Service Drop Clearances to Buildings
SERVICE DROP CLEARANCES TO BUILDINGS
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Residential Overhead Electrical Service Upgrade
DEPARTMENT OF PLANNING, BUILDING &
NEIGHBORHOOD PRESERVATION
250 FRANK H. OWAGA PLAZA. SECOND FLOOR. OAKLAND CA. 94612
RESIDENTIAL OVERHEAD ELECTRICAL SERVICE UPGRADE
BASED ON THE 2010 CALIFORNIA ELECTRICAL CODE & PG&E GREEN BOOK
This is not an all-inclusive list and additional items may be required as determined during the inspection.
A
B
C
D
E
F
G
H
I
J
Riser max. 18” behind wall facing service line. Brace riser if over 30” high. Service knob 12 over roof
48” max service conductor run over roof
Maximum distance 18” beyond the last strap. (no couplings)
36” minimum distance from window openings (12” over window)
10’ from walking surface, 12’ over driveways and 18’ over roadways
“Weaver style clamp” for grounding conductor connection to first 5 feet of water main.
Grounding Electrode (#6 copper conductor for services less than 200 amps, #4 for 200 amps)
“Acorn clamp” connection grounding electrode to 8’ long grounding rod. 1/2”for services less than 200 amps,
5/8” for 200 amps)
6’-7” max height for service disconnect.
Meter socket located between 48”min and 75” max from grade.
5
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