Provide
Future Electric Car Charging Stations
Prepare for
future installation of electric vehicle (EV) charging stations
for 1 of every 20 on-site parking stalls, by providing sufficient
panel space, installing conduit, and for ventilation and lighting.
Currently,
there are several different EV charger types: inductive paddles
and others with plug connectors. Until these standards are resolved,
it is difficult to know which type to install. However, they have
similar electrical and mechanical requirements, and preparing
for their future installation during construction is much simpler
and cheaper than adding them later.
New California
Electric Code and California Building Code sections govern EV
charging station installation. Non-commercial chargers require
either a dedicated 40A-240V ground-fault circuit interrupter (GFCI)
circuit for a 3-to 8-hour charge; or a 15A-120V GFCI circuit for
a 10- to 15- hour charge. (120V charging stations are far less
convenient for users because of the long charge time.) Charger
and lighting electrical panels should be located as close as possible
to anticipated charging stations for lowest cabling costs. Install
conduit for future cables. Anticipated charging stations should
also have sufficient space for a charger, its base and protective
wheel stops.
Chargers in
garages require interlocked ventilation to reduce explosion hazards
during charging.
Cautions
- Hydrogen
gas is extremely explosive, and generous ventilation must be
provided in enclosed spaces.
