Also you’re correct in not exceeding 60A or 150V

So this article was not written very well and neither was the new code rules…

Either way looks like the intent is to have gfci only on a receptacle intended to be used for EVs. Since you are hardwiring yours it’s not required.

As far as I know no disconnect required because an EV charger is not really a serviceable appliance. The point of a disconnect on AC unit is so when the AC guy comes to clean it he can easily turn it off and lock it out. For an EV charger it’s just passing power to your car.

The inspector will probably want the NMD inside to be in conduit for the section that is below 1.5m. I would use the watertight right angle connector I sent and just a drill a hole to put it right into the wall right into the back of a junction box inside garage. Then a chunk of conduit up to the 1.5m line and you can run the wire stapled to wall up high.

Another option would be to put a junction box on the exterior attic wall. This could serve as a junction point between the NMD90 and either some TECK90 (outdoor armoured cable) or flexible conduit or ridged conduit. Theoretically you can remove the sheath from the NMD90 up to the transition to conduit but I would just size the conduit so it fits with the sheath on. Then just get one 90 for conduit and one of the right angle watertight grommets.

https://www.homedepot.ca/product/southwire-1-inch-liquid-tight-non-metallic-simpush-90-degree-connector/1001386626 Assuming it’s a 1” knock-out.

Also looks like the they are ring terminals so you may need to get bigger rings for #6 wire from lordco or another electrical store.

While you’re doing it all I’d recommend going to the 50A breaker especially if you’re getting a permit and inspected so you only have to do it once! You can always lower the charging rate with dip switch or most cars will let you lower charging rate too. Charging at 40A isn’t going to affect your batteries noticeably. However DC fast charging at 50KW will!

There is a rule that if NMD is above 1.5m I believe it doesn’t need to be mechanically protected.

Firstly in Canada we have tables in the CEC that dictate the maximum amperage for a certain gauge of wire. This is dependent on the temperature rating of the wire and the material. If it is NMD 90, 90 means 90 degrees. Please confirm if copper or aluminum. According to table 2 for up to 3 #6 wire in a cable you can supply up to 75A. If you prefer you can upsize your breaker to a 60A to supply more current. This is important because most breakers are only rated for 80% so really your 40A breaker is only 32A to the charger. So with a 60A breaker you get 48A to charger a 50% increase.

As for the wire routing there is rules on the number of bends in conduit for every junction box. All wiring must be mechanically protected. If it’s NMD 90 it must be in a wall assembly or in conduit. Depending on the charger some of them can be fed from the back or inside the wall. If possible route the wire in the wall or on other side of the wall and come directly into the charger. I wouldn’t recommend wrapping around with conduit.

What charger are you planning to use?

Source: Electrical engineer consultant