Contents: Overview | Installing a Home Charging station: | Circuit Breaker Table | Terms
Overview:
Charging Levels:
Level | Circuit /plug | Output * | kW | Mi/Hr (MPH) of charge | time for Model 3 LR to 70% |
---|---|---|---|---|---|
Level 1 (120 volt) AC charging | 20 amp | 12 amps | 1.4 kW | 5 mph | 40 hrs |
Level 2 (240 volt) AC charging | |||||
NEMA 10-30 30 amp | 24 amps | 5.7 kW | 22 mph | 11 hrs | |
Wall Connector 40 amp | 32 amps* | 7.7 kW | 30 mph | 8.5 hrs | |
Wall Connector 50 amp | 40 amps | 9.6 kW | 37 mph | 7 hrs | |
Wall Connector 60 amps | 48 amps | 11.5 kW | 44 mph | 5 hrs | |
Level 3 (480 volt) DC fast charging | Supercharger | 300 amps | 140 kW | 320 mph | <1 hr |
MPH are for model 3 and Y. Model S and X are lower.
Source: Wall Connector | Tesla
The Model 3 Long Range (LR) has a 75 kWh battery pack and 325 mile range.
See others below.
Standard 240 V AC Plugs:
NEMA 10-30 - 30 AMP Common for clothes dryers
NEMA 14-50 - 50 AMP Common in RV parks and for electric ovens
NEMA 6-50 - 50 AMP Common for industrial use (e.g. welders and plasma cutters)
There are adapter cables for most electric vehicle connections.
The second generation Universal Mobile Connector (UMC) is limited to 32A to avoid overheating with a loose connection, and is sold with all Teslas now.
A 30 amp dryer circuit with a 10-30 plug charged at 24 amps for 22 MPH.
A Charge-Point station at Stanford West charged at 18 MPH.
Charging is limited by:
If it detects a larger than normal voltage drop or an unexpected fluctuation in input power it will reduce the charging rate by 25% and the charging port light will blink orange.
Discussions at https://teslamotorsclub.com indicated a 7 volt drop was acceptable.
Another post said that a range of +/- 5% (12 volts) is OK. i.e. it can can drop to 228 V
One post said it took 30 minutes for the light to blink.
They also said that faulty wiring could cause lower charging rates.
Voltages in my small 3 BR house at my dryer NEMA 10-30 (30 amp) outlet 40 feet from the breaker panel were: Only lights on 240-241 Volts HVAC fan and plug-in heater on 239-240 Heat and stove on 238-239 Stove and dryer (28 amp) on 234-235 I still need to test with the Tesla charging. The reading at the end of the extension cable (25 ft) was the same.
Type | Max Amps | |
---|---|---|
NEMA 14-50 | 32 | Universal Mobile Connector (UMC) which comes with your car. |
HPWC Wall connector | S, X - 48 A; 3LR - 40 A; 3 std - 32 A | Includes Cable |
On-board charger (OBC)
Model | Max Amps OBC | MPH* | Range | Time to Charge | |
---|---|---|---|---|---|
NEMA 14-50 | Wall Connector | ||||
Model S 75 kWh battery pack | 48 A | 34 | 250 mi | 11 hrs | 7 hrs |
Model S 100 kWh battery pack | 48 A | 34 | 335 mi | 15 hrs | 10 hrs |
Model 3 std 50 kWh | 32 A | 30 | 220 mi | 7 hrs | 7 hrs |
Model 3 long range 75 kWh | 40 A | 37 | 310 mi | 10 hrs | 8 hrs |
- With the NEMA 14-50 wall outlet charging amps is limited to 32 A by the Corded Mobile Connector.
Note: Tap the lightning bolt icon on the touchscreen to view the max amperage of your vehicle.
See Tesla Model 3 Home Charging Guide | TeslaTap.com
Model | Onboard Charger | Recommended circuit breaker for installation |
---|---|---|
Model S (Performance, Long Range) Model X (Performance, Long Range) Model 3 (Performance, Long Range) |
11.5 kW (48 amp) |
60 amp circuit breaker |
Model 3 Standard Range Plus | 7.7 kW (32 amp) |
40 amp circuit breaker |
Two or more Wall Connectors (for power-sharing among 2+ Tesla vehicles) |
N/A | 100 amp circuit breaker |
Note: Tap the lightning bolt icon on the touchscreen to view the max amperage of your vehicle.
Source: Wall Connector | Tesla
An easy rule of thumb for Model 3 is for every amp at 240V,
you get about 1mi/h of charging (assuming moderate temps).
See Wire Sizes (AWG)
International Standard for Electric Vehicle charging - IEC 62196-2 type 2 EU EV
Type 2 connector - Wikipedia
Source breaker-table Wall Connector | Tesla
Corded Mobile Connector $520
Model S/X/3 Wall Connector $500
The Wall Charger ($500 plus abt. $500 labor) comes with a cable so all you have to do is plug it into your tesla.
There are 3rd party Charging Stations:
e.g. Amazon.com: JuiceBox Pro 40 Smart Electric Vehicle (EV) Charging Station with WiFi - 40 amp Level 2 EVSE, 24-foot cable, NEMA 14-50 plug, UL and Energy Star Certified, Indoor / Outdoor Use 2 cables. $900
Type | Max Amps | Cost | |
---|---|---|---|
Hardware | Labor | ||
NEMA 14-50 | 32 | ||
Wall connector | 32 - 48 Depending on model |
A NEMA 14-50 wall outlet which will work with the
Universal Mobile Connector.
A Wall Connector with its own cable. Which is required to get 48 Amps.
A dedicated 60 amp 240 volt circuit is recommended for the S, X and 3 long-range.
A 40 amp 240 volt circuit is OK for the standard model 3.
60 amps requires AWG 6/4 cable - $2.80/ft, - $85 for 30 ft
40 amps requires AWG 8/4 cable - $1.84/ft - $55 for 30 ft
NEMA 14-50 wall outlet $10
Tesla Circuit Breaker Table Note: This has a cable which will only charge Tesla's
Source Wall Connector | TeslaNote: Los Angeles code requires 100 Amp for a wall charger.
The second generation UMC is 32A, and is sold with all Teslas now. So even though the cars can accept up to 48A, the only way to get that would be higher-amperage J1772 EVSEs (plus Tesla adapter), or the Tesla Wall Connectors.
Some recommend limiting charging to 40 A to avoid heating up the components, which they claim shortens the life of electronics, metal solder joints, ...
Terms in electric vehicle charging:
Reasons for speed differences when Supercharging:
UMC - Universal Mobile Connector 32A Corded Mobile Connector with a 14-50 plug for 40A charging - Interchangable NEMA 14-50 and standard 120 V plug. May be the same as UMC Gen 1 EVSE Electric Vehicle Supply Equipment - Use J1772 plug commonly called a charging station or charging dock. J1772 (SAE) - J Plug - North American standard for electrical connectors for electric vehicles NEMA - National Electrical Manufacturer Association SAE Society of Automotive Engineers CCS Combined Charging System SAE Level 3 HPWC - High Power Wall Connector