NEMA 14-50 plug

Just a slight misspelling: https://www.lefunev.com/

 

On Amazon it’s Lefanev. And on the link you’ve provided it is Lefanev.

Regardless, it looks like a decent product.

 

I like the 32A/24A/16A/12A 240 Chargers. My father-in-law uses a 20A clipper creek for his everyday charger on a 30A circuit. When I visit, I will set my charger to 24A and unplug his and plug in mine (charges 20% faster than his and still doesn't overload his circuit). At home if I use it on a 50A circuit, I'll set it to 32A. Flexibility usually has some value. I have one of the older Voltec (prior to 2013) Level 1 chargers that is switchable from 8A to 12A. Multiple times I have found the 8A setting to be helpful when using a low amperage (or old) circuit to charge overnight. I usually throw it in the trunk when traveling just for it's flexibility.

 

Which model do you use? I’m not opposed to a unit that has variable charging rates, I’d just prefer that it have a switch, button or dial to make the selection rather than a rattle trap.

 

FWIW, user selectable amperages are not permitted by the NEC. They are permitted with restricted access, but only on "fixed in place" equipment (requires a tool to be removed from it's mounting).

625.42 Rating. The power transfer equipment shall have sufficient rating to supply the load served. Electric vehicle charging loads shall be considered to be continuous loads for the purposes of this article. Service and feeder shall be sized in accordance with the product ratings. Where an automatic load management system is used, the maximum equipment load on a service and feeder shall be the maximum load permitted by the automatic load management system.

Adjustable settings shall be permitted on fixed-in-place equipment only. If adjustments have an impact on the rating label, those changes shall be in accordance with manufacturer’s instructions, and the adjusted rating shall appear with sufficient durability to withstand the environment involved on the rating label. Electric vehicle supply equipment with restricted access to an ampere adjusting means shall be permitted to have ampere ratings that are equal to the adjusted current setting. Sizing the service and feeder to match the adjusting means shall be permitted. Restricted access shall prevent the user from gaining access to the adjusting means. Restricted access shall be accomplished by at least one of the following:

(1) A cover or door that requires the use of a tool to open

(2) Locked doors accessible only to qualified personnel

(3) Password protected commissioning software accessible only to qualified personnel​

 

Perhaps the "rattle trap" method of selecting the maximum current the Khons EVSE draws is an ingenious way to circumvent the NEC's 3 listed methods of restricting user access to that adjustment. The description of this EVSE doesn't mention approval by UL, NEC, or any other regulatory agency, so the "rattle trap" could simply be a way to control production costs. This EVSE doesn't appear to have any competition, so perhaps other manufacturers take the NEC restriction more seriously.

 

Except it fails on two accounts, it is neither a fixed in place device, nor does it prevent the user from gaining access to the adjusting means.

If that’s considered ingenious, I fear for humanity.

I’d still line to know what device Robert Alabama uses.

 

I have a Juicebox.

It is not a 'portable' EVSE, but it does allow you to command a charging current (via softwre) that is less than it's maximum rating.
Thus, you could plug it into a 20A circuit and command the charging current to be 16A for example.

Per @DucRider citation, this would be non-compliant per (1) or (2), but you could argue that it complies with (3) because this S/W setting requires a password in order to access it. I consider myself a "qualified person", but if you don't, then you could have your electrician set the password and not tell you what it is !

 

Sorry. Been out of pocket for a few days. My Level 2 portable charger is an open EVSE homemade model with a rotary switch to set the charging current. The LCD will show the charging setting when the EVSE is powered on. I bought the board and the LCD, then sourced everything else as cheaply as I could to build what I wanted. The open EVSE is essentially the same as a juicebox.

 

Thanks. Looks like I’ll be getting an off the shelf 32A device.

 

I have had a 32 amp Mustart for two plus years. Comes with a NEMA 14-5 plug. I have not had any issues with it. Charges the car in 2 hours.