Entering the top of an Tesla charger, outside.

[Irving LaRue]

I’m installing a Tesla charger. The customer would vastly prefer me to enter the top of the box rather than the bottom because of the wrap around of the pipe. This particular charger doesn’t allow side entry.

I am using 1in PVC for the conduit. I plan to use a weatherproof locknut and put some clear silicone caulk around the point of entry, which will be hidden nicely behind the charger’s faceplate.

Would you suggest a better way to perform this install?

I read in a post from 2005 on here about “Meyer’s Hubs”, but I can’t seem to find them anywhere and the job is tomorrow. I’d love to hear some thoughts from you all. Thanks!

 

[hillbilly1]

You will probably void the warranty, I have no doubt they probably have that in the instructions regardless if you use a myers hub (available at most supply houses and big box stores, in case you ever need one)

 

[Irving LaRue]

You will probably void the warranty, I have no doubt they probably have that in the instructions regardless if you use a myers hub (available at most supply houses and big box stores, in case you ever need one)

I read through the manual and didn’t see anything about voiding warranty if entering through the top. Here’s a link to the manual.

https://www.tesla.com/sites/default...Gen3_WallConnector_Installation_Manual.pdf#23

 

[retirede]

I read through the manual and didn’t see anything about voiding warranty if entering through the top. Here’s a link to the manual.

https://www.tesla.com/sites/default...Gen3_WallConnector_Installation_Manual.pdf#23

The Wall Connector enclosure is rated NEMA 3R and the instructions state that top entry is provided. Any rain-tight method of attachment should be satisfactory.

 

[hillbilly1]

Chalk one up to Tesla being ahead of everyone else! All of the other manufacturers I’ve installed don’t give that option!

 

[Irving LaRue]

You will probably void the warranty, I have no doubt they probably have that in the instructions regardless if you use a myers hub (available at most supply houses and big box stores, in case you ever need one)

You mentioned that Myers Hub was available at most big box stores. Most in my area are Home Depot. Do you know if they go by another name at THD? I looked for “myers hub” but couldn’t find anything.

 

[LarryFine]

You mentioned that Myers Hub was available at most big box stores. Most in my area are Home Depot. Do you know if they go by another name at THD? I looked for “myers hub” but couldn’t find anything.

Of course, some will point out that a hub is not suitable to accept a male adapter.

Leviton Watertight 1 in. Conduit Hub for use with Intermediate Metal Conduit (IMC) or Rigid Conduit, Zinc HUB-100 HUB-100 - The Home Depot

Conduit hubs of die-cast zinc provide a positive ground with insulated throats to prevent wire abrasion. Embedded O-ring ensures a watertight seal. For use with IMC (Intermediate Metal Conduit) or rigid

www.homedepot.com

 

[Little Bill]

Of course, some will point out that a hub is not suitable to accept a male adapter.

Leviton Watertight 1 in. Conduit Hub for use with Intermediate Metal Conduit (IMC) or Rigid Conduit, Zinc HUB-100 HUB-100 - The Home Depot

Conduit hubs of die-cast zinc provide a positive ground with insulated throats to prevent wire abrasion. Embedded O-ring ensures a watertight seal. For use with IMC (Intermediate Metal Conduit) or rigid

www.homedepot.com

The specs on that hub say IMC or Rigid.

 

[hillbilly1]

The specs on that hub say IMC or Rigid.

Yeah, several years ago during a CE class taught by one of the CMP members, said they were not listed for pvc. He has since retired. I miss those classes! A lot of the classes are taught by people that don’t have a clue about code, they just regurgitate a prepared text.

 

[scrubbin]

Myers Hub and PVC. Simply screw a PVC threaded terminal adaptor into the MH and change over to PVC

 

[wwhitney]

Myers Hub and PVC. Simply screw a PVC threaded terminal adaptor into the MH and change over to PVC

UL 651 "Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings" says in section 1.5 Fittings:

1.5.2 Internally-threaded adapters covred by these requirements are fittings intended for joining a length of rigid PVC conduit [or] a PVC elbow to threaded rigid metal conduit or other externally threaded devices.

1.5.3 Externally-threaded adapters (also referred to as terminal adapters) covered by these requirements are fittings intended for joining a length of rigid PVC conduit or elbow to a) the knockout area of a metal box with a metal locknut, b) a threaded metal hub or fitting on a metal box, c) a threaded hub on a phenolic box, or d) a knockout in a phenolic box.

As a Meyers hub is a threaded metal fitting, if the Tesla Wall Connector has a metal box, then 1.5.3(b) arguably allows what you suggest.

Otherwise, you'd need to use a short IMC or RMC nipple, and then a PVC female adapter, which is allowed per 1.5.2.

Cheers, Wayne

 

[Irving LaRue]

Thanks for the thoughtful responses everybody. People like you are what make this forum worth visiting. Here’s an update on the job.

I spoke with the homeowner about the location of the charger. I preferred to move it near a door which would require me to make some holes in her wood paneling walls. She was ok with this change as they’d like to get rid of the paneling in the future anyway. I went into the back of the charger, rather than the top. Problem solved!