Setting up HPWC outside in my driveway

[ACAG]

I plan on setting up a my HPWC on the side of my house near my driveway. My plan is to use a 60 amp breaker and either 6 gauge THHN wire for my line 1 & 2 along with a 10 gauge THHN for my ground OR a 4 gauge THNN wire for my line 1 & 2 with a 8 gauge THHN ground. I will be using 1” liquidtight flexible non-metallic PVC conduit to run my wires from my 200 amp service panel through my basement and out to the side of my house. The reason i plan on using liquidtight instead of EMT is because it should be much easier to maneuver.

Any thoughts on this configuration? Should i use 6 gauge or 4 gauge for my line voltage? Are my ground wire gauges appropriate for my 60 amp breaker? I know you should not use Romex 6-2 with a 60 amp breaker.

Thanks

 

[woodguyatl]

I plan on setting up a my HPWC on the side of my house near my driveway. My plan is to use a 60 amp breaker and either 6 gauge THHN wire for my line 1 & 2 along with a 10 gauge THHN for my ground OR a 4 gauge THNN wire for my line 1 & 2 with a 8 gauge THHN ground. I will be using 1” liquidtight flexible non-metallic PVC conduit to run my wires from my 200 amp service panel through my basement and out to the side of my house. The reason i plan on using liquidtight instead of EMT is because it should be much easier to maneuver.

Any thoughts on this configuration? Should i use 6 gauge or 4 gauge for my line voltage? Are my ground wire gauges appropriate for my 60 amp breaker? I know you should not use Romex 6-2 with a 60 amp breaker.

Thanks

6 gauge for conductors and 10 gauge for ground are just fine. 1” conduit is big enough.

 

[SSedan]

Price out 4 gauge and decide for yourself if the cost is modest enough to justify the future proofing.
Are you going to be kicking yourself in a few years when you want to have 2 EVs sharing a breaker. What if a friend has a older S or X that can take 72-80amps and wants to visit.

If you actually look at the cost to upsize a little I think you will go for it. Breakers are easily swapped later, so I would consider that to be the least important component to consider oversizing, running new wire is a hassle.

 

[timk225]

Here's a video of how I built my driveway charging station. I had to run 85 feet of 6/3 wire to mine. I used 3/4" conduit and sealed the sections with RTV. I would suggest using 1 inch pipe, it'll be easier to get the wires through it and around the bends.

If you are setting your HPWC to 48 amps I would use 4 gauge instead of 6.