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GeekEV
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Re: Adapters for Ingineer's L1 to L2 EVSE mod NOW AVAILABLE

Thu Mar 24, 2011 3:42 pm

StayOnline.com also has some ready-made on this page in a variety of lengths. Just make sure to get the L6-20 plug on both sides! I got a 15' from them for myself...

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Re: Adapters for Ingineer's L1 to L2 EVSE mod NOW AVAILABLE

Thu Mar 24, 2011 3:49 pm

GeekEV wrote:StayOnline.com also has some ready-made on this page in a variety of lengths. Just make sure to get the L6-20 plug on both sides! I got a 15' from them for myself...
Is this the right one? http://www.stayonline.com/detail.aspx?ID=7510
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Re: Adapters for Ingineer's L1 to L2 EVSE mod NOW AVAILABLE

Thu Mar 24, 2011 3:53 pm

Yep, that's it... Thanks for posting that link. I shoulda done that. :lol:

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z0ner
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Re: Adapters for Ingineer's L1 to L2 EVSE mod NOW AVAILABLE

Fri Mar 25, 2011 6:25 pm

GeekEV, are you using 12/3 for this?

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Re: Adapters for Ingineer's L1 to L2 EVSE mod NOW AVAILABLE

Fri Mar 25, 2011 6:52 pm

Yes, we will be using 12-3. Though, truth be told, the first batch was done with 12-4, but that's overkill since they only need three wires.

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Re: Adapters for Ingineer's L1 to L2 EVSE mod NOW AVAILABLE

Sat Apr 02, 2011 11:12 pm

I got my adapters today. I got a complete set except for the NEMA 5-15 adapter which I already purchased from Ingineer with the upgrade. So far I have only been able to test the adapter that goes in my NEMA 14-30 outlet. That worked no problem. I also got a set of two L6-20 8/3 extension cords from StayOnline, a 20' and 40'. I tested them plugged together for at total of 60' with both 120v and 240v and it worked in both configurations. So far I have only used this set up indoors to test it but sooner or later I'll want to use it outdoors. Any suggestions on how to mitigate the risk when using this setup outdoors?

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Re: Adapters for Ingineer's L1 to L2 EVSE mod NOW AVAILABLE

Sun Apr 03, 2011 12:25 am

I know Ingineer has expressed concerns about runs that long causing too much resistance and creating a lot of loss, thus impacting your charge times and possibly heating the extension cord up too much. Perhaps it's better because you went with 8/3 instead of 12/3 wire - I'm not sure, any comments Ingineer?

As for the safety of using these outdoors, that's fine if the outlet you're using is a GFCI outlet. If it's not, the recommendation would be to keep everything between the EVSE box and the wall indoors. The J plug hose is always safe to run outdoors because the EVSE box has built-in GFCI protection. If you MUST use the entire rig outdoors without a GFCI outlet, you should only do it nice weather and only if the area around the plug and all extension cord junctions is completely dry... It's risky, because that's a LONG stretch of cord that is unprotected without GFCI, but it will work. All at your own risk, of course.
Last edited by GeekEV on Sun Apr 03, 2011 12:47 am, edited 1 time in total.

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Re: Adapters for Ingineer's L1 to L2 EVSE mod NOW AVAILABLE

Sun Apr 03, 2011 12:40 am

1. It is possible to buy/make a waterproof "plastic box" to cover the outdoor connections of extension cords/adapters, etc.

2. Home Depot has a portable 120v GFI outlet for about $10 or so. Plug it into a regular 3-prong (grounded) 120v socket, and then plug your extension cord into the 5-15 socket on this device.
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Re: Adapters for Ingineer's L1 to L2 EVSE mod NOW AVAILABLE

Sun Apr 03, 2011 7:57 am

GeekEV wrote:I know Ingineer has expressed concerns about runs that long causing too much resistance and creating a lot of loss, thus impacting your charge times and possibly heating the extension cord up too much. Perhaps it's better because you went with 8/3 instead of 12/3 wire
Cord length will definitely increase voltage drop, which would mean slightly slower charging and slightly higher bills. Google "voltage drop calculator", and you can quantify this. Use a maximum 1% voltage drop to be really conservative, or use 2%. For example, according to http://www.southwire.com/ProductCatalog/voltdrop.jsp if you are using #8 Cu for a 12 amp load at 240V, the length needs to be 144 feet or less to limit the voltage drop to 1%. For #12 Cu, the maximum length for 1% voltage drop or less is 57 feet.

As for heating problems damaging the cord, the only way the cord length matters is if you coil up the excess cord. As long as the cord is laid out so it doesn't touch itself, you're fine.

Cheers, Wayne

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Re: Adapters for Ingineer's L1 to L2 EVSE mod NOW AVAILABLE

Sun Apr 03, 2011 8:25 am

Great info, thanks Wayne! So a 60' run of 8 gauge should be no problem at all...

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