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Discussion Starter · #1 ·
I have a friend looking to have a new feed ran to his garage for his future EV in Alberta. He is looking to run PVC underground from his house directly to his garage, and was previously suggested by someone to use 6/3 NMWU. Looking through the code now I'm not sure if it's possible to run NMWU since according to the CEC it is not allowed in a raceway.

Is it indeed possible to run NMWU straight from the panel to PVC underground out to the charger in the garage or if it would just be easier/cheaper to run something better suited for a raceway? If so, what would be recommended?
 

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With the prices of EV, I can see how it would be tight to hire an electrician to do it.

What about solar ?
 

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What's the ampacity on #6 NMWU?

If he has 1 electric car, it would stand to reason that he would someday have 2, or maybe his next electric car will use a faster charger.

If I was going underground I would want a 100A feed.
 

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With the prices of EV, I can see how it would be tight to hire an electrician to do it.

What about solar ?

They have previously looked into solar as an option to offset costs, but unfortunately don't have the available roof space to make it worthwhile.
 

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Discussion Starter · #5 ·
What's the ampacity on #6 NMWU?

If he has 1 electric car, it would stand to reason that he would someday have 2, or maybe his next electric car will use a faster charger.

If I was going underground I would want a 100A feed.
He currently has a Tesla Model 3 on pre-order, but no plans of a second one in the near future without a new home purchase beforehand. He is planning on ordering a Tesla 80 amp wall connector but has plans to only use it on the 40 amp setting i believe due to the current limits of his service unfortunately.
 

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You do understand NMWU is direct burial....so why the conduit ! And if it is a Telsa 80....that is what you need as a feeder....doesn't matter if you can dial it down.!
He needs an electrician and a permit !
 

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I dialed my Tesla charger down, but then put it back up to 80A.

I only have a 100A service, so I just tell the wife not to use the toaster or kettle while I'm charging my baby :wink:

No fires yet, so I think I'm good to go :biggrin:
 

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He currently has a Tesla Model 3 on pre-order, but no plans of a second one in the near future without a new home purchase beforehand. He is planning on ordering a Tesla 80 amp wall connector but has plans to only use it on the 40 amp setting i believe due to the current limits of his service unfortunately.
Then why get a wall charger? He can install a 50A range outlet and plug the Tesla right into it for 40A.


I can only imagine a wall charger in Canada costs like 7,000,000 loonies.
 

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Then why get a wall charger? He can install a 50A range outlet and plug the Tesla right into it for 40A.


I can only imagine a wall charger in Canada costs like 7,000,000 loonies.
We offset that cost by not running a neutral to the 14-50R :wink:
 

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Discussion Starter · #10 ·
You do understand NMWU is direct burial....so why the conduit ! And if it is a Telsa 80....that is what you need as a feeder....doesn't matter if you can dial it down.!
He needs an electrician and a permit !

I am aware yes that NMWU is direct burial, but keep getting conflicting information as to whether or not it can be used in PVC even throughout this site on different threads. There was even a pdf I came across from Airdrie that listed NMWU in PVC as a recommended method for feeds to a garage.
He wants the conduit for future considerations such as changing the feed or what not its easier to pull out and replace wires rather than having to dig up his lawn again.
Currently he is trying to price out the work required in order to pull permits.
 

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Discussion Starter · #12 ·
Then why get a wall charger? He can install a 50A range outlet and plug the Tesla right into it for 40A.


I can only imagine a wall charger in Canada costs like 7,000,000 loonies.
I think at first he was planning on installing a NEMA 14-50 (which I myself had also suggested as well) but as far as I'm aware is leaning towards the Tesla charger or something similar for ease of charging, and so the supplied charging cables are able to remain in the car and such for daily commutes or charging at work.
 

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Run 1 1/4" PVC and pull in the wires you need based on the demand of the charger. If you are going from the panel to the garage to an outlet, just use X-Link... If you don't want to do that, install teck cable and put in a sub panel in the garage, after upsizing the house panel (if needed). Then you can wire it from the panel in the garage. Either way, best call an electrician and get it done right...
 

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I am aware yes that NMWU is direct burial, but keep getting conflicting information as to whether or not it can be used in PVC even throughout this site on different threads. There was even a pdf I came across from Airdrie that listed NMWU in PVC as a recommended method for feeds to a garage.
He wants the conduit for future considerations such as changing the feed or what not its easier to pull out and replace wires rather than having to dig up his lawn again.
Currently he is trying to price out the work required in order to pull permits.
1. If he gets a permit the inspector will tell him he needs to upgrade his service.
2. NMWU will not pull out of the conduit easily.
 

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Discussion Starter · #15 ·
1. If he gets a permit the inspector will tell him he needs to upgrade his service.
2. NMWU will not pull out of the conduit easily.
I agree to both. I had already informed him that he would likely need to upgrade his service and to be prepared for the added cost of that. Just trying to find more opinions to use to sway his mind and give him options as to what would be the best scenario for what he would like to accomplish.

Thank you guys for all the input.
 

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I don't know about Canada, but in the US you can run cable in conduit but the fill calculation is different. I'd still oversize the pipe no matter what you pull in it. Pipe is cheap. Excavation- no so much. Won't hurt to spend a couple extra shekels on future proofing it.
 
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Obviously, if NMWU can't be installed in conduit, just pull it through a sleeve:shifty:
That's one I've used a lot. Some inspectors aren't even familiar with that provision. The NEC calls it "sleeving for protection". Fill tables don't apply and the conduit, or "sleeve" in this case, need not be terminated at each end if the wiring method would have otherwise been permitted to be run on its lonesome without conduit.
 
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