UpRider wrote:My situation was probably pretty favorable, but I was able to get Level 2 charging from my house built in 1972 for about $260.
Here's how it worked.
I have an unfinished basement laundry room adjacent to the ground level garage. In the basement, I happen to have a gas dryer, although the dryer had an unused 240V outlet behind it. I was able to move the 240V outlet box to the joists closer to the garage. Then I was able to cut a hole between the lower garage wall into the basement. Ran the cable thru the hole and then connected the NEMA 10-30 plug to 240V and the other end to the BOLT and off we go. Total cost - $260 for the cable from Amazon + $6 for cable hanger clamps and screws.
If you have this situation, but have an electric dryer, it would probably be cheaper to hire a plumber to run a gas line to the dryer, replace the electric dryer with a gas dryer (energy cost savings here too), and repurpose the 240V box. This would certainly be cheaper than having an electrician install a new 240V circuit from your service panel to the garage. In fact, the electrician might recommend a new upgraded service panel to accommodate the new amperage load. But using my suggestion, there is NO additional amperage load, because the former dryer load no longer exists.
If I'm reading this correctly, you passed the power cord thru a hole into a separate room/different floor. This type of install violates almost all electrical codes and would not pass an inspection.
If you're the "codes and rules are for weenies" type, then go for it.
The proper way to do this is to convert the existing outlet box into a junction box. Run wires from the existing dryer outlet box to a new box in the garage. Put a blank cover plate on the old outlet box and install the receptacle in the new box. Not much more money (<$5 most likely) and a safe installation that meets codes.
If you don't know why the installation described by the OP is unsafe, you probably shouldn't be doing electrical work.