Residential EV Charging Guide

EV Charger Types

Charging hybrid electric vehicles (PHEVs) and all-electric vehicles (EVs) requires plugging into an Electric Vehicle Supply Equipment (EVSE).
Charging times vary based on how empty the battery is, how much energy it holds, battery type, and the type of charging equipment used. EV Chargers may require power infrastructure upgrades.

There are two residential categories of EV chargers, based on the amount of power the charger can provide:

120v Wall Outlet
Level 2 Charger

Level 1 - 120 volt outlet

  • Plug into a standard 120 volt (V) wall outlet; alternating current (AC) plug up to 15 amperes and 1.8 kW
  • Requires a dedicated circuit
  • Portable, does not require installation 
  • Cord is a standard 3-prong household plug with a connector to the vehicle
  • Slowest charging time between 8 - 20 hours
  • Standard outlet: NEM 5-15R

Level 2 - 240 volt outlet

  • Uses 240 volt(V), alternating current (AC) plug up to 80 amperes and 19.2 kW
  • Requires installation
  • Most residential level 2 EVSE will operate at lower power, using 30 amperes and deliver 7.2 kW of power
  • Charging time take 3 - 8 hours and can be done overnight
  • Most common in US for residential homes and business use
  • Standard outlet: SAE J1442/3

Equipment, Connectors & Plugs

For a list of charging units and other accessories, view Plug Shares home charging equipment options.

  • Modern charging equipment and vehicles use a stand connector and plug receptacle based on the Society of Automotive Engineers (SAE) J1772 standard. Vehicles with this plug receptacle can use any Level 1 or Level 2 EVSE. Major vehicle and charging system manufacturers support this standard, which should eliminate drivers’ concerns about whether their vehicle is compatible with the infrastructure.
  • In the US, Combined Charging System (CCS) and CHAdeMO are the two standard connector types for Level 3 (DC fast charging) EVSE.
  • Tesla chargers deviate from these standards, but adapters are available so that Tesla drivers can use standard, non-Tesla connectors.

Permitting & Electrical Steps

Residential EV Charger Installation Checklist for a list of permitting and electrical steps.