Wiring for Wall Connector

[Rocky_H]

My electrician stated for a 60 amp service he could not legally use Romex (NM-B)

Well, the way that's stated is false. There are some jurisdictions that forbid the use of Romex for anything. Period. (Chicago is one example.) So EVERYTHING has to put in wires in conduit.

He said that Service Entrance cable was rated for I believe 65 amps where Romex was only rated for 55 amps.

Again, not really accurate, because no one is mentioning the wire gauge.

This is just about using a correct wire type AND GAUGE that meets the criteria for the circuit rating. 4 gauge Romex is thick stuff and has a rating of 70A. Of course it can be used for a 60A circuit.

For some reason, some people get really obsessed with 6 gauge only and then make incorrect blanket statements like "Romex isn't allowed." No, that's just too thin a version of Romex.

 

[h2ofun]

Copy paste from the paid invoice:

Installed a 240 volt 60 amp circuit

Then it has to either be 4/3 RM or #6 thhn conduit, or you got ripped off

And if county approved, I would go after them also, like I did

 

[h2ofun]

Well, the way that's stated is false. There are some jurisdictions that forbid the use of Romex for anything. Period. (Chicago is one example.) So EVERYTHING has to put in wires in conduit.


Again, not really accurate, because no one is mentioning the wire gauge.

This is just about using a correct wire type AND GAUGE that meets the criteria for the circuit rating. 4 gauge Romex is thick stuff and has a rating of 70A. Of course it can be used for a 60A circuit.

For some reason, some people get really obsessed with 6 gauge only and then make incorrect blanket statements like "Romex isn't allowed." No, that's just too thin a version of Romex.

Yep, I used 4/3 romex for my 60 amp breakers, and boy was that stuff expensive, worked on my 75 amp breaker to code also.
At least they passed it.

 

[jeanluc07]

I used single wires #6 THHN.

 

[flixden]

What do you guys with single #6 thhn wires in conduit use for the third conductor (ground)?

 

[flixden]

The other warning I have is to make sure your connections are all torqued properly - a bad connection can negate properly sized wire and be a fire risk.

Not saying you are wrong in any way (because I am sure the correct torque helps to make connections safer), but I have honestly never seen an electrician use a torque wrench. Is that really common practice in other areas?

 

[jeanluc07]

What do you guys with single #6 thhn wires in conduit use for the third conductor (ground)?

I used #6 THHN for ground as well. I also has a same type of wire for neutral as spare just in case I need it since my path from my panel box to my garage is long and hard to route so I had them done one time only.

 

[sleepydoc]

Not saying you are wrong in any way (because I am sure the correct torque helps to make connections safer), but I have honestly never seen an electrician use a torque wrench. Is that really common practice in other areas?

I can't say how common the practice is; the torques are specified for various devices and the NEC states all devices must be installed per the manufacturer instructions/specifications. There is also a level of experience involved - after you have done enough you have an idea of how tight is tight enough.

 

[Jerryr]

What do you guys with single #6 thhn wires in conduit use for the third conductor (ground)?

Green THHN

 

[Jerryr]

Interesting

I am getting my Wall Connector installed Tuesday of next week. My electrician stated for a 60 amp service he could not legally use Romex (NM-B) He is going to use 6 AWG “Copper Service Entrance” cable for the run from the breaker panel, though the attic. Then conduit down the garage wall and transition to flex to the Tesla Wall Connector. He said that Service Entrance cable was rated for I believe 65 amps where Romex was only rated for 55 amps.

He charges actual material cost and bills his labor rate for the actual number of hours it takes. He said he estimated it at 3 hours and that would be $800 total. If would likely only take 2 hours and if so the charge would be less. It’s 50 feet of Service entrance cable, conduit where it comes down the garage wall from the attic and any other parts needed.

I’ll post update after it’s installed.

Update as promised.

Electrician removed existing 40/30 amp Eaton EVSE

Electrician used 6-6-8 Southwire copper CU SEU (service entrance cable) and wired it to a 60 amp breaker. 2-blacks plus stranded ground. He claimed couldn’t use 6/3 NM-B over 55 amps but it was ok to use Copper SEU cable protected with a 60 amp breaker.

He did several tighten/wiggle steps of the stranded wire before setting final torque on the connections.

cable was $4.50/ft, needed 50 feet
other parts = 60 amp DP breaker, pvc conduit to run up on garage wall exterior, cable clamps, tap cons, wall anchors plus misc hardware
2.5 hours labor @ $120/hr plus $69 trip fee = $309
——————-
$667 total

 

[flixden]

Update as promised.

Electrician removed existing 40/30 amp Eaton EVSE

Electrician used 6-6-8 Southwire copper CU SEU (service entrance cable) and wired it to a 60 amp breaker. 2-blacks plus stranded ground. He claimed couldn’t use 6/3 NM-B over 55 amps but it was ok to use Copper SEU cable protected with a 60 amp breaker.

He did several tighten/wiggle steps of the stranded wire before setting final torque on the connections.

cable was $4.50/ft, needed 50 feet
other parts = 60 amp DP breaker, pvc conduit to run up on garage wall exterior, cable clamps, tap cons, wall anchors plus misc hardware
2.5 hours labor @ $120/hr plus $69 trip fee = $309
——————-
$667 total

That's a great price!
Which are of the county are you in?

 

[Jerryr]

That's a great price!
Which are of the county are you in?

Near Sarasota Florida.

 

[smashcz]

Electrician used 6-6-8 Southwire copper CU SEU (service entrance cable) and wired it to a 60 amp breaker. 2-blacks plus stranded ground. He claimed couldn’t use 6/3 NM-B over 55 amps but it was ok to use Copper SEU cable protected with a 60 amp breaker.

Where to buy this cable? Link...... I need about 8 feet.

 

[ewoodrick]

Where to buy this cable? Link...... I need about 8 feet.

Check with your Home Depot or Lowes.

 

[Jerryr]

Where to buy this cable? Link...... I need about 8 feet.

Check your local electrical supply houses. Home depot doesn't sell it by the foot from what I searched.

 

[Jerryr]

Where to buy this cable? Link...... I need about 8 feet.

To add on, When you contact the electrical supply house make sure that you specify Copper SEU, not aluminum

 

[Jerryr]

Where to buy this cable? Link...... I need about 8 feet.

Here is an ebay listing for a used 8 foot length 166561384289 for sale | eBay

 

[rjpjnk]

Yep, an electrician who knows code!!!!

Yeah, first one so far. Isn't it odd how the small group of non-NM-B evangelists here seem to know more than all the electricians in the nation?
Not disagreeing. 55a is the limit as I read it.

 

[ewoodrick]

Check your local electrical supply houses. Home depot doesn't sell it by the foot from what I searched.

Did you search online or go into a store?