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| Member |
I keep reading about " hard wiring " the charger . It's plugged into a receptacle that is fed from this breaker ? | |||
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אַרְיֵה |
Yes. The receptacle is the only thing on this circuit. Most EV Chargers are offered in your choice of hardwired or NEMA 14-50 plug-in*. Pros and cons, either way. As of ~3 years ago, the plug-in requires a GFCI breaker, the hard-wired does not. Advantage: hard-wired. If the charger itself goes bad, a hard-wired installation would require me to call (and pay for) an electrician to change it. It's easy enough for the homeowner to change a plug-in. For that reason, I opted for the plug-in version of my charger. In retrospect, that might not have been the smarter choice. *I believe that Tesla only offers the hard-wired charger, no plug-in option. הרחפת שלי מלאה בצלופחים | |||
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Shall Not Be Infringed |
Require?? It's just a three (or four) conductors and Cable Gland, so definitely not rocket science. Open the Breaker to kill power to the circuit/unit, or if you prefer, kill the entire electrical service at the Main Breaker and deploy your screwdriver. Double-check your work, make sure all terminations are tight and you're all set. I get having a pro/electrician run the new electrical circuit, but once that circuit is installed, any replacement down the road is quite simple! If one is not comfortable doing this work that's one thing, but I can't imagine 'required' applies here. ____________________________________________________________ If Some is Good, and More is Better.....then Too Much, is Just Enough !! Trump 2024....Make America Great Again! "May Almighty God bless the United States of America" - parabellum 7/26/20 Live Free or Die! | |||
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| Member |
In my opinion and not seeing the wiring, it sounds like the electrician used the hardware as the ground return. It seems that a ground return conductor back to the panel buss would solve the ground imbalance. Just my opinion without seeing all the connections. | |||
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| Member |
Have you unplugged the charger and energized just the wire and the receptacle ? | |||
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| אַרְיֵה |
The Romex between the breaker and the 14-50 receptacle includes a ground wire. הרחפת שלי מלאה בצלופחים | |||
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| Member |
Why would a 2 pole GFCI breaker need a Ground wire to function correctly ? | |||
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| Member |
Amperage flows on the ground wire if a circuit is out of balance on the hot legs. If the amperage on the ground and the breaker are not balanced, the breaker opens. That is the protection. And if the grounds are not tied to a common point, a difference in ground potential can happen and the breaker interprets this as a fault and opens. | |||
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| Ammoholic |
That’s fine advice. I’d just add one step. After downing the power and before deploying the screwdriver, get out your volt meter and check your voltage between all legs. Any mechanical device can fail and it is wise to ensure the power actually is off before messing with connections.* You may also choose to take a picture before disconnecting wires. It is easy and cheap insurance against getting delayed, then when you finally get back to it thinking, “Now which wire went where?” *Granted, the (old) electrician who taught me this was referring to changing fuses in a 480v service to a well, and you only screw up with 480v once, but he’s still not wrong. You absolutely want to check that the power really is off before screwing around with electricity. | |||
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| Member |
But a two pole GFCI breaker does not have a ground connection . The current on one leg flows back through the other . This the return path . If they are not equal , then current is assumed to be flowing to " Ground " . Any ground . The scenario you describe sounds like a protective relay with a ground element . | |||
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Alea iacta est |
Not a typo. I already had a 50 amp breaker installed. No reason to swap out to a 30.
No sir. I have a plug in charger for the Tesla I just bought. If I could go back to the 5th when I bought the car and charger, I would have bought the hardwired one. Yes, I can take the plug in charger with me… In reality, it’ll probably never leave the garage. The “lol” thread | |||
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| Savor the limelight |
Other than being able to draw more current than a 30amp cord can handle and bypassing the safety feature designed to prevent that cord from burning up? | |||
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| Alea iacta est |
Looking at the instruction manual… it’s a 14-50 plug, and I had bought the corresponding outlet. Thanks for pointing out the potential issues had I installed a breaker not paired to the outlet. The “lol” thread | |||
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| Member |
Update? Was it the breaker or something else? --K | |||
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| Ammoholic |
This is a question for a licensed electrician up to speed on the NEC (National Electric?Electrical Code), but I wonder if there is any reason why one couldn’t cut off the plug, strip an appropriate amount of wire, and hardwire a charger that was originally sold as a plug-in? Yes, by code it should probably be done by an electrician, and maybe even with a permit depending on the jurisdiction. Sure, there should be appropriate strain relief, and if the box the outlet is removed from doesn’t have enough space (seems unlikely), it may need to be changed. I just wonder if there is any reason in the code why it couldn’t be done. Oh, I suppose it might void any manufacturer’s warranty, so that’s a consideration, but I wonder if it would be legal. | |||
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thin skin can't win |
 Hell, he probably screwed it up for spite. And no need for the inspector after your eagle-eye was dripping on his shoulder the whole time! You only have integrity once. - imprezaguy02 | |||
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