Q: What is a charging station (EVSE), and why is it required?

A: The technical name for these products is EVSE (Electric Vehicle Supply Equipment), commonly called a charging station or charging dock. These charging stations are built into the EV charging standard for electrical safety; first for the user, then the vehicle, and then the power grid. The charging station's primary function is as electrical safety equipment. A standard home charging station, whether it is a Level 1 (120V) or a Level 2 (240V) station, will provide pass through AC power to the vehicle for charging. The vehicle will convert this AC power to DC power and utilize that to recharge the batteries, the actual charger is on-board the vehicle. A charging station implements several layers of redundant safety features to protect the user from potential electrical hazards while connecting and disconnecting the station to the vehicle for charging.  Once connected to the vehicle the station will inform the vehicle that power is available and at what level.  From that point the vehicle takes over, initiates and takes full control of the power transfer, unless an electrical fault occurs, in which case the station will stop the power transfer immediately.

Q: Is there a standard connector for all plug-in vehicles?

A: Yes, the industry standard connector in North America is the SAE J1772 connector and all  EVSEs come standard with this type of connector.  The SAE  J1772 standard also covers the communication protocol used by the vehicle and charging station.  The SAE  J1772 standard connector is used for Level 1 (120V) and Level 2 (240V) charging.

One caveat is Tesla.  Tesla uses its own proprietary connection interface.  The Tesla vehicles still utilize the SAE  J1772 communications protocol, so Tesla vehicles can use public charging stations by utilizing a Tesla provided adapter.

Q: Will charging stations work with the vehicle€™s on board timer?

A: Yes, charging stations are a pass through for electricity and will not supply power to the vehicle unless the vehicle is requesting a charge. The vehicle is in complete control of the charge and if a timer is set within the vehicle the station will not supply power to the vehicle until the vehicle requests a charge at the set time, this is beneficial in order to take advantage of "off peak" electricity rates from your utility company.

Q: What type of warranty do you offer?

A:  AZ Charging Specialists provides a 5 year labor and material warranty on all installations.