Yanquetino
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How to prep a New House for an EVSE

Fri Jul 02, 2010 12:46 pm

planet4ever wrote:I had to ask myself, 'Why did you care so much about what you expected to learn on June 30?'
I'm sure that we all have a different answer to that question.

My own is that I am building a new home right now. Obviously, it would be best to install whatever is needed for the home charger from the get-go as part of the project. Trusting Nissan's word, I reassured my contractor and electrician that "by June 30" I could provide them "more details on [...] how to begin preparing [the] home for [my Leaf]." The electrician has been waiting for those specs, and getting them "later this summer" will hardly suffice. The wiring has to be laid over the next couple of weeks or we won't be able to move in as scheduled.

I guess at this point I am simply going to try to pick the brains of friends who own Tesla Roadsters. Perhaps they can provide workable specs for breakers, wire gauges, circuits, optimal locations in the garage, etc. I just hope that those specs will suffice for the Leaf, when and if I can arrange for an inspection --rather than installing the precise Leaf components from the ground up. Nissan hasn't left me much choice.
Last edited by evnow on Fri Jul 02, 2010 2:00 pm, edited 1 time in total.
Reason: Split from an earlier thread

AndyH
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Re: June-30 Nissan Mail

Fri Jul 02, 2010 1:09 pm

Yanquetino wrote:
planet4ever wrote:I had to ask myself, 'Why did you care so much about what you expected to learn on June 30?'
I'm sure that we all have a different answer to that question.

My own is that I am building a new home right now. Obviously, it would be best to install whatever is needed for the home charger from the get-go as part of the project. ...
I guess at this point I am simply going to try to pick the brains of friends who own Tesla Roadsters. Perhaps they can provide workable specs for breakers, wire gauges, circuits, optimal locations in the garage, etc. I just hope that those specs will suffice for the Leaf, when and if I can arrange for an inspection --rather than installing the precise Leaf components from the ground up. Nissan hasn't left me much choice.
Since Nissan is partnering with AeroVironment for EVSE, maybe telephone AV for info? Since bad info is more harmful than no info, it should be better to go to the 'source' for info.
AV Corporate Headquarters
181 W. Huntington Drive, Suite 202
Monrovia, CA 91016
ph: 626.357.9983
fx: 626.359.9628

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evnow
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Delivery Date: 25 Feb 2011
Leaf Number: 303
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Re: June-30 Nissan Mail

Fri Jul 02, 2010 1:41 pm

Yanquetino wrote:My own is that I am building a new home right now.
Why don't you create a new thread - that way people with experience can give you suggestions and you can also document what you learn and do for others.
1st Leaf : 2/28/2011 to 5/6/2013
2nd Leaf : 5/4/2013 to 3/21/2017
Volt : 3/25/2017 to 5/25/2018
Model 3 : 5/10/2018 to ?

Yanquetino
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Re: June-30 Nissan Mail

Fri Jul 02, 2010 1:45 pm

AndyH wrote:Since Nissan is partnering with AeroVironment for EVSE, maybe telephone AV for info?
I wrote to AeroVironment three times over the the last few weeks with no response, but I have finally managed to reach them by phone. The gentleman with whom I spoke was much more helpful than Nissan has ever been. He told me that, to accommodate their "RS Model" EVSE (the top one on this page), my electrician should install...
  • a 240V line
  • at 50Hz / 60Hz
  • on a 40amp circuit breaker
  • with 30amp wire (6 gauge, I would imagine)
  • located to allow at least 4 feet between the garage floor and the bottom of the charger
  • located to allow either a 15- or 25-foot cable to reach the Leaf (both are available, at no additonal cost)
According to him, the EVSE is fully capable of charging at 6.6kW, even though the initial Leafs will only handle 3.3kW. Ergo, when and if Nissan upgrades to the higher capacity charger, there will be no need to replace the EVSE. (I just wish that the unit were as powerful as the 70amp model that Tesla uses.)

I will pass these specs on to my electrician, and hope that they don't change before I can install the EVSE and take delivery of my Leaf.

Yanquetino
Posts: 478
Joined: Tue May 11, 2010 7:47 am

Re: June-30 Nissan Mail

Fri Jul 02, 2010 1:47 pm

evnow wrote:Why don't you create a new thread - that way people with experience can give you suggestions and you can also document what you learn and do for others.
Sure... I'm happy to pass along whatever might help others. Feel free to transfer these last few messages to a new thread, since you are a moderator. Thanks!

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DaveEV
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Re: June-30 Nissan Mail

Fri Jul 02, 2010 3:15 pm

Yanquetino wrote:
  • a 240V line
  • at 50Hz / 60Hz
  • on a 40amp circuit breaker
  • with 30amp wire (6 gauge, I would imagine)
  • located to allow at least 4 feet between the garage floor and the bottom of the charger
  • located to allow either a 15- or 25-foot cable to reach the Leaf (both are available, at no additonal cost)
Just a couple notes here:

Unless that's a type-o above, your wire should be matched to the breaker at least, meaning it should be 40A wire for a 40A breaker. The wire can be capable of handling more current than the breaker. 6 GA wire is good for 55-75A depending on the insulation, so perhaps it was just a type-o and you mean 60-70 A wire.

It's highly recommend to place the EVSE on one side or the other and in a place where the cable won't overlap any commonly used walkways.

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evnow
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Re: June-30 Nissan Mail

Fri Jul 02, 2010 3:21 pm

drees wrote:It's highly recommend to place the EVSE on one side or the other and in a place where the cable won't overlap any commonly used walkways.
Good idea - we should have a new thread on that to see what people are planning.
1st Leaf : 2/28/2011 to 5/6/2013
2nd Leaf : 5/4/2013 to 3/21/2017
Volt : 3/25/2017 to 5/25/2018
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EVDRIVER
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Re: How to prep a New House for an EVSE

Fri Jul 02, 2010 3:35 pm

Regardless of what AV requires I would run 6 gauge wire as it will cover you for an upgraded EVSE and the cost is only incremental since they are running the wire already, the rest of the above tips are all good. If they are running romex the 6 G upgrade is even better since it will be in the wall. Mine will be in conduit, next week I will run 6G in a 1" conduit to my install location. If you think you may be eventually charging two EVs at once in the future you may want to plan accordingly. I can't tell you how many people don't run the proper wire for what they need and they regret it. If you are doing a remodel also run low voltage as well, I would run a CAT6 to the EVSE location as well as to your main panel. I do many high-end automation projects with LV and central lighting controls so if you have any questions please feel free to send a PM. Wire is much less expensive then tearing up walls:)

AndyH
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Location: San Antonio

Re: June-30 Nissan Mail

Fri Jul 02, 2010 3:44 pm

Yanquetino wrote:I will pass these specs on to my electrician, and hope that they don't change before I can install the EVSE and take delivery of my Leaf.
Nice job! Thanks for the excellent info!

Yanquetino
Posts: 478
Joined: Tue May 11, 2010 7:47 am

Re: June-30 Nissan Mail

Fri Jul 02, 2010 6:58 pm

drees wrote:Unless that's a type-o above, your wire should be matched to the breaker at least, meaning it should be 40A wire for a 40A breaker.
Yeah, I know: I asked the AV rep about that, yet this is what he specified. I don't get it myself, but I figure if I have my electrician install 6 gauge wire, I shouldn't have a problem. In fact, I will probably have him install a 100amp Milbank RV box, and then have him connect the EVSE next to it according to the above specs. That way, if and when onboard chargers and/or EVSEs change, it won't prove so problematic to upgrade the connection.

As for location, yes: by all means it is prudent NOT to have the cable strung across a common walkway. In my case, I am thinking of the far wall of my double (L-shaped) garage, with enough cable to reach two EVs, if ever necessary. It will thus be strung AWAY from the entrance to the house. That location will also allow me access to my small sailboat (in the top of the L), without stepping over the cable. AND... I will be able to open the door to the garage from the house and easily see the SOC lights on both the EVSE and the Leaf.

At least those are the parameters that occur to me so far. ;) Suggestions are welcome!

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