EV Residential Guidelines1
Electric Vehicle Charging System
Guidelines for Residential Buildings
Checklist Review for Residential Electric Vehicle Charging Station Permits
Check One Type of Charging Station(s)
Proposed
Power Levels
(proposed circuit rating)
Level 1 110/120 volt alternating current (VAC) at 15 or 20 Amps
Level 2 - 3.3 kilowatt (kW) (low) 208/240 VAC at 20 or 30 Amps
Level 2 - 6.6kW (medium) 208/240 VAC at 40 Amps
Level 2 - 9.6kW (high) 208/240 VAC at 50 Amps
Level 2 - 19.2kW (highest) 208/240 VAC at 100 Amps
Other (provide detail)
PERMIT APPLICATION REQUIREMENTS
1) Is the permit application complete with the following information: Project address, parcel #,
builder/owner name, contractor name, valid contractor license #, phone numbers and any other
requirement? Yes ☐ No ☐
2) Does the application include electric vehicle charging station model number, manufacturer's specs
and installation guidelines? Yes ☐ No ☐
ELECTRICAL LOAD CALCULATION WORKSHEET
1) Is an electrical load calculation worksheet included? (CEC1 220) Yes ☐ No ☐
2) Based on the load calculation worksheet, is a new electrical service panel upgrade required2?
Yes ☐ No ☐
1 2016 California Electrical Code. Article 220 Branch-Circuit, Feeder, and Service Calculations
2 Load Calculation Worksheet review instructions: The size of the existing service MUST be equal to or larger than the minimum
required size of main service breaker. If the existing service panel is smaller than the minimum required size of existing
electrical services, then a new upgraded electrical service panel must be installed in order to handle the added electrical load
from the proposed EVCS.
CITY OF CYPRESS
Building Division
5275 Orange Avenue, Cypress, California 90630
714-229-6730 – buildingpermits@cypressca.org
2
a. If yes to Q2, do plans include the electrical service panel upgrade? Yes ☐ No ☐
b. If yes to Q2, is the PG&E work order included with permit application? Yes ☐ No ☐
3) Is the charging circuit appropriately sized for a continuous load (125%)? Yes ☐ No ☐
4) If charging equipment proposed is a Level 2 - 9.6kW station with a circuit rating of 50 amps or
higher, is a completed circuit card with electrical calculations included with the single-line diagram?
Yes ☐ No ☐ Not Applicable ☐
SITE PLAN & SINGLE LINE DRAWING
1) Is a site plan and electrical plan with a single-line diagram included with the permit application?
Yes ☐ No ☐
a. If mechanical ventilation requirements are triggered for indoor venting requirements (CEC
625.29 (D)), is a mechanical plan included with the permit application? Yes ☐ No ☐
2) Is the site plan fully dimensioned and drawn to scale? Yes ☐ No ☐
a. Showing location, size, and use of all structures? Yes ☐ No ☐
b. Showing location of electrical panel to charging system? Yes ☐ No ☐
c. Showing type of charging system and mounting? Yes ☐ No ☐
d. Is the type of mounting for charging system included if the charging system is not wall-
mounted? Yes ☐ No ☐ Not Applicable ☐
COMPLIANCE WITH 2016 CALIFORNIA ELECTRCIAL CODE
1) Does the plan include EVCS manufacturer's specs and installation guidelines? Yes ☐ No ☐
2) Does the electrical plan identify the amperage and location of existing electrical service panel?
Yes ☐ No ☐
a. If yes to Q2, does the existing panel schedule show room for additional breakers?
Yes ☐ No ☐
b. Are sizes for the conduit and conductor included? Yes ☐ No ☐
3) Is the charging unit rated more than 60 amps or more than 150V to ground? Yes ☐ No ☐
a. If yes to Q3, are disconnecting means provided in a readily accessible location in line of site
and within 50’ of EVCS? (CEC 625.23) Yes ☐ No ☐
4) Does the charging equipment have a Nationally Recognized Testing Laboratory (NRTL) approved
listing mark? (UL 2202/UL 2200) Yes ☐ No ☐
5) If trenching is required, is the trenching detail called out? Yes ☐ No ☐
a. Is the trenching in compliance with electrical feeder requirements from structure to
structure? (CEC 225) Yes ☐ No ☐
b. Is the trenching in compliance of minimum cover requirements for wiring methods or
circuits? (18” for direct burial per CEC 300) Yes ☐ No ☐
COMPLIANCE WITH 2016 CALIFORNIA GREEN BUILDING STANDARDS CODE
1) Do CALGreen EV Readiness installation requirements apply to this project? (Is this a new construction
of a one-family or two family dwelling?) Yes ☐ No ☐
a. If yes to Q1, each dwelling must install a listed raceway to accommodate a dedicated 208.240-
volt branch circuit in accordance with section 4.106.4.1
3
NOTES:
4
Checklist Review for Multi-Unit Dwellings (MUD) Electric Vehicle Charging Station Permit
Check One Type of Charging Station(s)
Proposed
Power Levels
(proposed circuit rating)
Level 1 110/120 volt alternating current (VAC) at 15 or 20
Amps
Level 2 - 3.3 kilowatt (kW)
(low) 208/240 VAC at 20 or 30 Amps
Level 2 - 6.6kW (medium) 208/240 VAC at 40 Amps
Level 2 - 9.6kW (high) 208/240 VAC at 50 Amps
Level 2 - 19.2kW (highest) 208/240 VAC at 100 Amps
Other (provide detail)
PERMIT APPLICATION REQUIREMENTS
1) Is the permit application complete with the following information: Project address, parcel #,
builder/owner name, contractor name, valid contractor license #, phone numbers and any other
requirement? Yes ☐ No ☐
ELECTRICAL LOAD CALCULATION WORKSHEET
1) Is an electrical load calculation worksheet included? (CEC3 220) Yes ☐ No ☐
2) Based on the load calculation worksheet, is a new electrical service panel upgrade required4? Yes ☐
No ☐
a. If yes to Q2, do plans include the electrical service panel upgrade? Yes ☐ No ☐
b. If yes to Q2, is the PG&E work order included with permit application? Yes ☐ No ☐
3) Is the charging circuit appropriately sized for a continuous load (125%)? Yes ☐ No ☐
4) If charging equipment proposed is a Level 2 – 9.6 kW station with a circuit rating of 50 Amps or
higher, is a completed circuit card with electrical calculations included with the single line diagram?
Yes ☐ No ☐
SITE PLAN & SINGLE LINE DRAWING
1) Is a site plan and electrical plan with a single-line diagram included with the permit application?
Yes ☐ No ☐
a. If mechanical ventilation requirements are triggered for indoor venting requirements (CEC
625.29 (D)), is a mechanical plan included with the permit application? Yes ☐ No ☐
2) Is the site plan fully dimensioned and drawn to scale? Yes ☐ No ☐
a. Showing location, size, and use of all structures? Yes ☐ No ☐
b. Showing location of electrical panel to charging system? Yes ☐ No ☐
3 2016 California Electrical Code. Article 220 Branch-Circuit, Feeder, and Service Calculations
4 Load Calculation Worksheet review instructions: The size of the existing service MUST be equal to or larger than the minimum
required size of main service breaker. If the existing service panel is smaller than the minimum required size of existing
electrical services, then a new upgraded electrical service panel must be installed in order to handle the added electrical load
from the proposed EVCS.
5
c. Showing type of charging system and mounting? Yes ☐ No ☐
d. Is the type of mounting for charging system included if the charging system is not wall-
mounted? Yes ☐ No ☐ Not Applicable ☐
COMPLIANCE WITH 2016 CALIFORNIA ELECTRCIAL CODE
1) Does the plan include EVCS manufacturer's specs and installation guidelines? Yes ☐ No ☐
2) Does the electrical plan identify the amperage and location of existing electrical service panel?
Yes ☐ No ☐
a. If yes to Q2, does the existing panel schedule show room for additional breakers?
Yes ☐ No ☐
b. Are sizes for the conduit and conductor included? Yes ☐ No ☐
3) Is the charging unit rated more than 60 amps or more than 150V to ground? Yes ☐ No ☐
a. If yes to Q3, are disconnecting means provided in a readily accessible location in line of site
and within 50’ of EVCS? (CEC 625.23) Yes ☐ No ☐
4) Does the charging equipment have a Nationally Recognized Testing Laboratory (NRTL) approved
listing mark? (UL 2202/UL 2200) Yes ☐ No ☐
5) If trenching is required, is the trenching detail called out? Yes ☐ No ☐
a. Is the trenching in compliance with electrical feeder requirements from structure to
structure? (CEC 225) Yes ☐ No ☐
b. Is the trenching in compliance of minimum cover requirements for wiring methods or
circuits? (18” for direct burial per CEC 300) Yes ☐ No ☐
COMPLIANCE WITH 2016 CALIFORNIA GREEN BUILDING STANDARDS CODE
1) Do CALGreen EV Readiness installation requirements apply to this project? Yes ☐ No ☐
a. Do the plans demonstrate conformance with mandatory measures for 3% of total
parking spaces, but no less than one, for new multifamily dwellings with 17+ units that
must be EV capable? (4.106.4.2) Yes ☐ No ☐
b. Do the construction documents indicate the location of the proposed EV spaces where
at least one is located in common use areas and available to all residents for use?
(4.106.4.2.1)
2) When EV chargers are installed, EV spaces required by Section 4.106.4.2.2 item 3 shall comply
with at least one of the following options:
a. The EV space shall be located adjacent to an accessible parking space that complies with
California Building Code Chapter 11-A, to allow use of the EV charger from the
accessible parking space.
b. The EV space shall be located on an accessible route, as defined by California Building
Code Chapter 2, to the building.
c. EV charging space(s) comply with Section 4.106.4.2.2, items 1, 2 and 3 (below).
The minimum length of each EV space shall be 18 feet (5486 mm).
The minimum width of each EV space shall be 9 feet (2743 mm).
One in every 25 EV spaces, but not less than one, shall also have an 8-foot (2438
mm) wide minimum aisle. A 5-foot (1524 mm) wide minimum aisle shall be
permitted provided the minimum width of the EV space is 12 feet (3658 mm).
6
o Surface slope for this EV space and the aisle shall not exceed 1 unit vertical
in 48 units horizontal (2.083 percent slope) in any direction.
NOTES:
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Section 3: Certification Statement I hereby certify that the electrical work described on this permit
application shall be/has been installed in compliance with the conditions in this permit applicable
electrical code currently adopted and enforced within the jurisdiction of installation. Furthermore, all
associated work with circuits, electrical service and meters shall be/has been completed in compliance
with applicable electrical code currently adopted and enforced within the jurisdiction of installation. By
agreeing to the above requirements, the licensee or owner shall be permitted to install and operate the
charging station. The licensee also insures that appropriate load calculations have been done to ensure
that the residence has adequate electrical capacity to support electric vehicle charging equipment.
Existing circuits provided for garages may supply other loads and may not have sufficient capacity for
electric vehicle charging equipment.
In some older installations, the residential electrical service may not have sufficient capacity to supply
electric vehicle charging equipment. Capacity problems are likely to be encountered on 60 ampere
services or on 100 ampere services with multiple 240 volt loads. In such cases load calculations must be
performed to insure adequate capacity.
Signature of Licensee: Date:
Signature of Owner: Date: