I am going to be installing a charger for a client for their Tesla.
Do I need to ha e a separate shut off box for a double gang 100amp breaker for the charger?
Electrical – Does a 100A outlet for a car charger need a dedicated disconnect
electricalreceptacle
Related Solutions
See SAE J1772
In the 2009 standard, two charging levels are defined.
Voltage Phase Peak current AC Level 1 120 V Single phase 16 A AC Level 2 240 V Split phase 32 A (2001) 80 A (2009)
Nissan say
Most Nissan LEAF owners recharge their cars at home. The 6.6kW charger option lets you charge your Nissan LEAF at home in just 4 hours using a 32A Home Charging Unit
For that option you'd need a dedicated 240 volt 32 amp circuit.
Until you actually have an electric car it may be best to leave that circuit terminated in a junction box of some sort and leave the fitting of a charging-unit until later. You probably shouldn't fit a regular 240 V 32A outlet because the J1772 system requires some intelligence be built in to the supply side (the charging unit).
In some countries the government will pay you up to $1600 to have a charging point fitted in your garage. If you live in such a country, it might be worthwhile taking advantage of such offers whilst they are still available.
Yes, you are right. Current code wants the dishwasher GFCI protected. However, unlike the dishwasher, there is no specific article that explicitly states a disposal requires one.
A Double pole GFCI 20 Amp breaker can protect two individual appliances. The Wiring is known as a MWBC "multi-wire branch circuit" and uses 12-3 "Black, Red, White, and Ground".
However, current code also wants everything in a kitchen, including dishwashers to be ARC-fault protected. One solution is to use a Double-Pole Dual GFCI/ARC fault 20 Amp breaker.
But since you ran two separate branch circuits I don't think code allows you to combine the neutrals as one in the panel because the conductors are not in the same sheath/raceway when they leave the panel. In which case, you would just do as you mentioned using a 2-gang box with one GFCI and one regular outlet, which is probably far way less expensive!
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Best Answer
Receptacle plugs can serve as a means to disconnect an appliance.
If there is no receptacle, but is instead direct-wired, appliances rated over 300 volt-amperes require a disconnect. If the breaker box is within sight and is 50 ft or less the breaker can serve as the disconnect. If it is not within sight, then a means to lock the breaker in the off position can suffice as a disconnect.
Addendum: There is a small section in the code that talks about car charging disconnects. As mentioned by another post, 2011 625.23 says greater than 60A or 150 volts to ground requires a disconnect -- That section was moved to 625.42 in the 2014, and to 625.43 in 2017.
That being said, 60A or less can use a receptacle plug as a disconnect if listed by the manufacture, and with residential 150V to ground is not an concern.