You see code violations??

[Ponchik]

This does not sound right but I can not put my finger on a citation, except not a good design.

A 50Amp rated oven circuit, turned into a sub panel feeder, then two separate circuits originated from it. one 50Amp back to the oven and one 40A to an EV charger.

 

[ActionDave]

215.2 Minimum Rating and Size
(A) Feeders Not More Than 600 Volts.
(1) General. Feeder conductors shall have an ampacity not
less than required to supply the load as calculated in Parts
III, IV, and V of Article 220. The minimum feeder-circuit
conductor size, before the application of any adjustment or
correction factors, shall have an allowable ampacity not less
than the noncontinuous load plus 125 percent of the continu-
ous load.

In reality it may work. If you can make sure that the car is not charging while someone is baking in the oven you may be able to make pass code.

 

[texie]

In addition to the load issues, I hope this is not an older circuit that does not have an EGC.

 

[jeff48356]

In addition to the load issues, I hope this is not an older circuit that does not have an EGC.

That would not be good at all!

But I would have replaced the feeder conductors with #4-3 copper Romex with #8 EGC (or #2 aluminum SER cable) for a 100-amp feeder ampacity. The feeder breaker too, of course. Then both the range and the car charger can be run at the same time without any trouble.

 

[norcal]

That would not be good at all!

But I would have replaced the feeder conductors with #4-3 copper Romex with #8 EGC (or #2 aluminum SER cable) for a 100-amp feeder ampacity. The feeder breaker too, of course. Then both the range and the car charger can be run at the same time without any trouble.

In that application neither cable is suitable for 100A & 4/3 NM is only suitable for 70A as it has to be sized from the 60 degree column of table 310.16.

Edit #2, I think that there are a few more code cites to be found.