Wall charger

[kbr0125]

Just got done installing my new Tesla Wall charger. I used about 5 ft of flex conduit to get to the garage from basement then 4 ft of hard conduit to get to the wall charger. I used (2x) 11ft 4AWG THHN 90c and 11ft 8AWG THHN green.

Materials: $200 (charger: $450)
Time: 6 hours, I didn’t want to destroy my office walls In my basement so I had to fish conduit, that took the longest!

4 gauge wire was a pain in the butt to work with. I have some dry wall patching to do,

 

[240vPlug]

I bet your feeling satisfied after doing this! Yes #4 is a lot harder to work with than #6. #6 THHN 90C is rated for 75 amps and would be sufficient in this application. I went with #6 THHN 90C on mine.

 

[kbr0125]

Very satisfied, two 4AWG and one 8AWG barely fit in the 3/4 inch conduit it seemed. Finished at 2am, now I have to clean up my mess and fix the drywall, lol. Think I’ll wait until it’s warm out so it dries faster.

My old charger was only 32 amps on a nema 14-50.

Yes after looking at the code chart, kind of wish I went with 6 gauge,

 

[zoomer0056]

Tesla Wall charger

Its a Wall Connector.

 

[Cosmacelf]

Very satisfied, two 4AWG and one 8AWG barely fit in the 3/4 inch conduit it seemed.

That’s because you were supposed to use 1” conduit for those size wires. No big deal, but yeah, check tables before doing projects!

 

[hjylb]

You are amazing! For such a large current operation, I dare not do it myself. I asked a nearby company, and the quoted price was very expensive, so I hesitated for a long time.

 

[mongo]

That’s because you were supposed to use 1” conduit for those size wires. No big deal, but yeah, check tables before doing projects!

Conduit Fill Calculator | Southwire
says two 4s and an 8 are 36.5% fill, so they meet NEC's < 40% requirement for 3 conductors (also <31% for two if only checking the 4 AWG wires).
Kudos to @kbr0125 for also upsizing the ground wire to match the 4 AWG feeds.

 

[Cosmacelf]

Conduit Fill Calculator | Southwire
says two 4s and an 8 are 36.5% fill, so they meet NEC's < 40% requirement for 3 conductors (also <31% for two if only checking the 4 AWG wires).
Kudos to @kbr0125 for also upsizing the ground wire to match the 4 AWG feeds.

View attachment 949444

Silly me, I just glanced at a chart (which doesn’t do mixed wire sizes). OK, you are correct, I’ve learned something, and it must have been really hard to pull nonetheless!

 

[mongo]

Silly me, I just glanced at a chart (which doesn’t do mixed wire sizes). OK, you are correct, I’ve learned something, and it must have been really hard to pull nonetheless!

Yeah, I tried to find a mixed fill chart.
I've found the key to using flex conduit is to stuff it first while pulling it straight, then route it.

 

[Jerryr]

Just got done installing my new Tesla Wall charger. I used about 5 ft of flex conduit to get to the garage from basement then 4 ft of hard conduit to get to the wall charger. I used (2x) 11ft 4AWG THHN 90c and 11ft 8AWG THHN green.

Materials: $200 (charger: $450)
Time: 6 hours, I didn’t want to destroy my office walls In my basement so I had to fish conduit, that took the longest!

4 gauge wire was a pain in the butt to work with. I have some dry wall patching to do,

Just got done installing my new Tesla Wall charger. I used about 5 ft of flex conduit to get to the garage from basement then 4 ft of hard conduit to get to the wall charger. I used (2x) 11ft 4AWG THHN 90c and 11ft 8AWG THHN green.

Materials: $200 (charger: $450)
Time: 6 hours, I didn’t want to destroy my office walls In my basement so I had to fish conduit, that took the longest!

4 gauge wire was a pain in the butt to work with. I have some dry wall patching to do,

Good Job. I sure you experienced a great sense of accomplishment.

I had a Wall connector installed a few weeks ago by a local electrician. He used 6-6-8 copper SEU Service cable through the wall rather than Romex NM-B since NM-B wouldn’t support 60 amp.

He charged me $389 for Labor plus parts at his cost For total $667. it took him 2.5 hours 1/2 of that time was crawling crawling through the hot Florida Attic. He came out of the attic with his shirt drenched with sweat.

It would have taken me all day with trips to l electric supply store and crawling in the attic. In my younger years I would have done the installation but I no longer put my aged body through that punishment. Best $389 I’ve spent recently.