IMO, you can now buy decent heavy-duty well-constructed J1772 EVSEs for rather low cost, and if you own a Tesla, their wall-connector EVSE is a good bargain for what you get. If you just dropped many tens of kilobucks on a new EV, do yourself a favor and get a decent EVSE. Save the included portable unit for emergencies/travel. The portable units are much less reliable, so if you get a wall-mounted one, you then have a backup should it fail.
A proper hard-wired installation is more reliable and less prone to failure, simply because there are less connection points, especially those of the 100 year old NEMA connector designs still in common use. An EV charging load is challenging, which is why the NEC (National Electrical Code) implemented the 125% rule to oversize things to provide additional headroom and protection from overheating. Even with this, I can't tell you how many times I've seen NEMA 15-40 outlets being used for EV charging get overheated and damaged because of corrosion, worn contacts, or most commonly; a loose wire termination. It's even worse on 120v Level 1, with many people using the included portable EVSE old worn-out garage outlets, or worse; and undersized cheap extension code. Do yourself, your family, and your insurance adjuster a favor; spend the $500 or so on a decent permanently wired EVSE. On Fri, Mar 26, 2021 at 12:01 PM Mark Hanson via EV <[email protected]> wrote: > Hi folks > We were arguing about insertion cycles of various connectors at lunch > (something engineers do) so I asked the great god google: > Since the Tesla Y came with a portable 32A 240Vac charge controller > (ordered the nema 14/50 plug), could just use it as others do for > charging. Looking at Wikipedia UL498 insertion cycles for Nema flat blade > connectors , they show 250 cycles at 200% rated current. The J1772 shows > 10K cycles but turns off so is disconnected no load. I don’t see the 14/50 > no load insertion number, apparently UL 498 doesn’t test for that. Do to > the reduced insertion rating of the Nema flat blade (in this case) 14/50 > connectors, probably best to put the portable EVSE under an enclosure to > protect from the weather and leave it plugged in. My P3 Killowatt meter > shows 2 watts of ghost load so negligible. > Stay connected, > Mark > > Sent from my iPhone > _______________________________________________ > Address messages to [email protected] > No other addresses in TO and CC fields > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > ARCHIVE: http://www.evdl.org/archive/ > LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20210326/d6de38ec/attachment.html> _______________________________________________ Address messages to [email protected] No other addresses in TO and CC fields UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/ LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
