See this
section of the IECC except as provided below.
(4)
Section C405.13 Electric vehicle
power transfer infrastructure. Add this section to the IECC. Parking
facilities shall be provided with electric vehicle power transfer
infrastructure in accordance with design requirements and Sections C405.13.1
through C405.13.6.
(a)
Section C405.13.1
Quantity. Add this section to the IECC. The number of required EV spaces
and EV capable spaces shall be determined in accordance with this section and
Table C405.13.1 based on the total number of automobile parking spaces and
shall be rounded up to the nearest whole number. For R-2 buildings, the table
requirements shall be based on the total number of dwelling units or the total
number of automobile parking spaces, whichever is less.
(i) Where more than one parking facility is
provided on a building site, the number of required automobile parking spaces
required to have EV power transfer infrastructure shall be calculated
separately for each parking facility.
(ii) Where one shared parking facility serves
multiple building occupancies, the required number of spaces shall be
determined proportionally based on the floor area of each building
occupancy.
(iii) Installed EVSE
spaces that exceed the minimum requirements of this section may be used to meet
minimum requirements for EV capable spaces.
(iv) Requirements for a Group S-2 parking
garage shall be determined by the occupancies served by that parking garage.
Where new automobile spaces do not serve specific occupancies, the values for
Group S-2 parking garage in Table C405.13.1 shall be used.
Exception: Parking facilities, serving
occupancies other than R-2 with fewer than 10 automobile parking spaces.
(b)
Table
C405.13.1 Required EV Power Transfer Infrastructure. Add this table to
the IECC.
TABLE C405.13.1 REQUIRED EV POWER TRANSFER
INFRASTRUCTURE
|
Occupancy
|
EVSE Spaces
|
*EV Capable Spaces
|
|
Group A
|
5%
|
10%
|
|
Group B
|
5%
|
5%
|
|
Group E
|
5%
|
5%
|
|
Group F
|
2%
|
5%
|
|
Group H
|
1%
|
0%
|
|
Group I
|
5%
|
10%
|
|
Group M
|
5%
|
10%
|
|
Group R-1
|
5%
|
15%
|
|
Group R-2
|
5%
|
15%
|
|
Group R-3 and R-4
|
2%
|
5%
|
|
Group S exclusive of Parking Garages
|
1%
|
0%
|
|
Group S-2 Parking Garages
|
5%
|
10%
|
*EVCapable Spaces are in addition to the required EVSE
Spaces.
(c)
Section
C405.13.2 EV Capable Spaces. Add this section to the IECC. Each EV
capable space used to meet the requirements of section C405.13.1 shall comply
with the following:
(i) A continuous raceway
or cable assembly shall be installed between an enclosure or outlet located
within 6 feet (914 mm) of the first EV capable space it serves and electrical
distribution equipment.
(ii) EV
capable space raceway or cable assembly may be installed to a point at an
island or median in the parking lot to provide future EV spaces without being
required to provide each space with an EV capable space.
(iii) Installed raceway or cable assembly
shall be sized and rated to supply a minimum circuit capacity in accordance
with Section C405.13.5.
(iv) The
electrical distribution equipment to which the raceway or cable assembly
connects shall have dedicated overcurrent protection device space and
electrical capacity to supply a calculated load in accordance with Section
C405.13.5.
(v) The enclosure or
outlet and the electrical distribution equipment directory shall be marked:
"For electric vehicle supply equipment (EVSE)".
(vi) Accessible parking shall be in
accordance with section 1107 of the IBC.
(d)
Section C405.13.3 EVSE
Spaces. Add this section to the IECC. An installed EVSE with multiple
output connections shall be permitted to serve multiple EVSE spaces. Each EVSE
installed to meet the requirements of section C405.13.1, serving either a
single EVSE space or multiple EVSE spaces, shall comply with the following:
(i) Have a minimum system and circuit
capacity in accordance with section C405.13.5.
(ii) Have a nameplate rating of not less than
6.2kW.
(iii) Be located within 6
feet (914 mm) of each EVSE space it serves.
(iv) Be installed in accordance with Section
C405.13.6.
(v) The EVSE space shall
be in a location that will not obstruct a public walkway when the EVSE is being
utilized by a user.
(vi) Accessible
parking shall be in accordance with section 1107 of the IBC.
(e)
Section C405.13.4 System
and circuit capacity. Add this section to the IECC. The system and
circuit capacity shall comply with C405.14.5.1 and C405.14.5.2.
(f)
Section C405.13.4.1 System
capacity. Add this section to the IECC. The electrical distribution
equipment supplying the branch circuit(s) serving each EV capable space and
EVSE space shall comply with one of the following:
(i) Have a calculated load of 7.2 kVA or the
nameplate rating of the equipment, whichever is larger, for each EV capable
space and EVSE space.
(ii) Meets
the requirements of section C405.13.5.3.1.
(g)
Section C405.13.4.2 Circuit
Capacity. Add this section to the IECC. The branch circuit serving each
EV capable space and EVSE space shall comply with one of the following:
(i) Have a rated capacity of not less than 50
amperes or the nameplate rating of the equipment, whichever is
greater.
(ii) Meets the
requirements of section C405.13.5.3.2.
(h)
Section C405.14.4.3 System and
circuit capacity management. Add this section to the IECC. Where system
and circuit capacity management are selected in section C405.13.5.1(2) or
section C405.13.5.2(2), the installation shall comply with sections
C405.13.4.3.1 and C405.13.4.3.2.
(i)
Section C405.13.4.3.1 System
capacity management. Add this section to the IECC. The maximum equipment
load on the electrical distribution equipment supplying the branch circuits(s)
serving EV capable spaces and EVSE spaces controlled by an energy management
system shall be the maximum load permitted by the energy management system, but
not less than 3.3 kVA per space.
(j)
Section C405.13.4.3.2 Circuit
Capacity Management. Add this section to the IECC. Each branch circuit
serving multiple EVSE spaces or EV capable spaces controlled by an energy
management system shall comply with one of the following:
(i) Have a minimum capacity of 25 amperes per
space.
(ii) Have a minimum capacity
of 20 amperes per space for R-2 occupancy type.
(k)
C405.13.5 EVSE Installation.
EVSE shall be installed in accordance with NFPA 70 and shall be listed and
labeled in accordance with UL 2202 or UL 2594.