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Anyone use this Romex 6/3 cable during install?
- Thread starter Dugdale
- Start date
So they do indeed make 55amp breakers
Where could we suggest to tesla to consider adding it to the available options? I mean it exists, so theres sure to be a lot of people would like to max out their potential without having to totally rewire an entire setup.
Where could we suggest to tesla to consider adding it to the available options? I mean it exists, so theres sure to be a lot of people would like to max out their potential without having to totally rewire an entire setup.
Midnightsun
Active Member
What happens if a 50a breaker is used on a 60a rated circuit. Since it technically only draws 48a, will the 50a breaker eventually overheat and pop and just become a reset nuisance? Not recommending this at all, just curious.
Got my wall connector installed today by a local electrician. They had to run about 25-30 feet of wire. I am assuming it’s Romex but I know it’s 6 gauge wiring. It’s connected to a 60amp breaker. I did not plug the car in while they were finishing up. But when I did 2-3 hours later it would work for 4-6 mins and then the breaker trips. They came back out and tried a new 60 amp breaker and then a 50 amp breaker. Well it works fine on the 50 amp breaker. I think I will have him change out the wire since he should have known it’s only rated for 55 amp. Do you think this is the cause of my issue? Or did they mess something else up?
Thanks
Thanks
What's the setting on the EVSE? Do you have a Tesla Wall Connector? What do you have the breaker rating set at in the app (or in the dip switches if it is an older EVSE)?
davewill
Active Member
That doesn't really make sense. The problem with using a 60a breaker on 6/3 Romex would be that it doesn't trip when it should, not tripping early. The main things I can think of would be a poor connection causing extra current draw or bad breakers or maybe the wrong breaker for your panel.
BelugaWhale
Member
I just ran this wire about 100' through my attic across house to garage. Wall charger up and running. Easy to install the new breaker and also easy to do the termination to the charger. Make sure you hire an electrician of you are not comfortable... you could run the cable and just hire someone to make the terminations to save money
BelugaWhale
Member
Yeah, thinking about it again, if it tripped with two different 60A breakers, but didn't trip with a 50A breaker, and you didn't change anything in between, then, um, either you had two bad 60A breakers, or ???
6 gauge NM-B (Romex) is only rated for 55A intermittent, or 44A continuous loads. Especially if it is routed in an uninsulated attic that can get really hot in the summer. That was kinda of the whole point of 332 posts in this thread
BelugaWhale
Member
Thanks for this I'm going to research some more. The gen3 installation manual says we can use 6 awg and my electrician also said it was good to use. I'm in coastal, central California and it doesn't hardly get hotter that 80 degrees6 gauge NM-B (Romex) is only rated for 55A intermittent, or 44A continuous loads. Especially if it is routed in an uninsulated attic that can get really hot in the summer. That was kinda of the whole point of 332 posts in this thread
BelugaWhale
Member
davewill
Active Member
That's not how electrical code works. The wire isn't rated for 60a, period. You don't get to say, "but I won't let it get that hot".
BelugaWhale
Member
I'm still confused about that because we thought the max draw is 48 amps. I appreciate your help
davewill
Active Member
In order to draw 48a, you have to have a 60a rated circuit, not a 55a rated circuit.
Or a different type of 6ga wire (in conduit).
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