devmach-e
Well-Known Member
- First Name
- David
- Joined
- Sep 8, 2021
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- 2,028
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- SF Bay Area
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- 2022 Premium RWD ER, 2016 Toyota Highlander Hybrid
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- Unix Sysadmin
I don't think people understand and what nature the plug was designed for. If you wash your clothes, you dry your clothes. The dryer is only on an hour. Two tops a deep freezer cuts on shuts off every so many hours. Same as any other household item that you use like your stove, your stove cuts on and cuts off. It's not on for 10 hours straight 100% of the time but an EV charger an evse whenever is charging. It's a minimum 5 hours at 100% of the time and the plugs cannot handle that they were only designed for maybe 80% usage and it's not 5 hours. Maybe an hour or two
If only there was a national standards organization that governed this kind of stuff. An organization dedicated to preventing fire hazards by creating regulations that local jurisdictions could use when deciding what sort of electrical wiring to deploy in homes, businesses, factories, etc, and how much amperage was safe to draw based on application and expected use case.a high quality install and correct gauge wire will lower your risk, but pulling more than 32 amps for more than 3 hours thru a nema 14-50 is not a great idea.
if you really really really WANT to pull more than 32a, you should hardwire.
A shitty 14-50 install is just as likely to cause a problem with a 32A EVSE as it is with a 40A EVSE. There's plenty of people on this forum, and others, who used the stock 32A EVSE that came with an EV, plugged it into a cheap 14-50 outlet, and ended up with a melted socket. The issue isn't drawing more than 32A. The issue is crappy cheap outlets that people are buying from home improvement stores.
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