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#Wire gauge for tesla wall connector install
#Wire gauge for tesla wall connector code

Tesla Gen1/Gen2 Wall chargers have a rotary “dip-switch” inside unit - it’s the job of the installer to setup this dip-switch to match the breaker for the installation.

#Wire gauge for tesla wall connector install

MOST J-1772 EVSE’s are “hard wired” to offer a particular number of amps and you install them with breaker/wire to match the setting (clippercreek I’m looking at you)

respond to the vehicle telling them to turn power flow on/off.

advertise a maximum amp rate to the vehicle.

safety relay - only let power flow _IF_ you’re actually plugged into a vehicle.

J-1772 EVSE’s really ONLY do 3 things (they are not magic or complicated) Your 19.2 kw (80 amp) Taycan will only pull 48 amps on your Tesla Charger, and only pull 30 amp the mall plugged into a ChargePoint L2 charger… I hope its not a hot day in that garage when this car says "im hungry".Click to expand.The Taycan will only pull the amount of power/amps advertised by the J-1772 charger it’s plugged into. The wire used in this article is certainly undersized, especially for that length run, for a continuous load, and with the potential that the main breaker box has a lower rated breaker or wire inside it. That whole panel should be derated for the lower temperature due to this and that dictates a severe jump in wire size. If your undersized new charging circuit is rated for 90c and is heating up to 80c, thats fine, but the other wires adjacent to it are now melting. This heat created also heats up other breakers and circuits and wires in the panel - some of those wires might be older and not rated at the same rating as today's plastics/wire coatings and are rated for 60c or 75c. Cars charging can be across many hours of high amperage usage - and can create excessive heat not only in a panel but in the conduit that it must be in if it is in a garage. The logic is normal devices have potentially shorter cycles that allow cooldown periods for the run of wire and for the panel/subpanel. Vehicle chargers are classified as "continuous usage" which dictates higher standards than normal. the NEC (National Electric Code) has tables that show what gauge wire to use in certain circumstances, but chargers are so new that the average electrician who hasn't done the legwork doesn't size it right, let alone a homeowner. I don't post this to discourage people from taking things into their own hands, but there are a few things that strike me as worrisome.

Other than that, the man has done a fantastic job. Tesla owner's garage fire highlights EV charging safety and cost. My point is, it will raise serious home insurance related questions. For example, the home insurance provider will ask if this Wall Connector was installed by a licensed electrician or no. There may be many risks associated with this and if something happens to the installer or the house the insurance is going to ask though questions. They wary from city to city and from state to state. Check your city's electric ordinances first.

Dazzford posted this picture, used here and another picture on Imgur.ĭon't try it yourself, unless you are a licensed electrician or have consulted one. Since his Wall Connector is outside, he also added a small rain guard over the top of it to protect it from rain. Various left over cedar wood I had laying around.

240 ft of 4 AWG THHN stranded copper (I could have done 160 ft of 3 AWG and 80 of 4 AWG for the ground if I wanted to do 100 amp).

#Wire gauge for tesla wall connector code

Very easy to do, and I'm completely to code apart from the licensed electrician part," he writes. It took me about 8 hours total split across the weekend to do everything. "It cost me less than $260 in materials (not including the wall adapter) for a 90 amp circuit, running 60ft through my garage in sch 40 PVC conduit. The Wall Connector for fast charging cost him ten times less than he was quoted for and only eight hours of work. He says when the quotes came back around 3,000 dollars, he decided to go for it different way. I have plenty of experience wiring outlets, installing new breakers, and reading code to make sure things are done safely," writes Reddit user Dazzford. I cant even do the work and then have it inspected. "I live within 50 miles of NYC and my locality has a silly ordinance that all electrical work, no matter how simple, must be done by a licensed electrician.