Oh yeah you are right - Still it is fine for 240 volts/16 Amps. I've been using these EVSE for over a year no issues. I make the connections (plug myself I find that improper termination at the plug is 99% of the problem. When the plugs are terminated at the factory I do not like the work...
Just one correction 2.5 mm wire is pretty close to 10 Gauge:
Wire Gauge Reference Table (AWG) (Formatting gets screwed up in the cut and paste below)
https://powerwerx.com/help/wire-gauge-awg-reference-table
AWG/SWG/BWG/MM Bare Dia. (Inch) Bare Dia. (MM)
12 SWG...
Hi jjeff the 10-in-1 adjustable EVSE is made by ZenCar. Look at my eBay listings and "Other Auctions" by this seller. Here are links:
http://www.ebay.com/itm/122049817194?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649...
I sell these EVSE, I repair these EVSE, and I work very closely with the factory to improve the product. It's a lot of work! FYI there was a "bad batch" in September that had issues with compatibility with Chevy Volt and J1772 extensions like JLONG but all those issues have been addressed...