3 ms·

Well at least you know your electrical system will be up for fast charging an EV. a 20A microwave is probably something you'd want to supervise pretty closely.

aidenn0 3y ago
It's only 33% more power than a regular microwave (which requires a 15A circuit).
freshpots 3y ago
"The oven must be on a SEPARATE, 20 Amp, 60 Hz-120V GROUNDED CIRCUIT." 20A @ 120V is only 2.4 kW max while you should only run it at 80% of the circuit/breaker load so 1.9 kW. Not exactly a fast charging EV circuit. It is not that much greater than a 15A circuit. It would take over an entire day to charge a typical EV, e.g Tesla LR Model 3, from 10-90%
- speedgoose 3y ago
  Yes, a typical EV has a 11kW onboard charger. Some have up to 22kW but it’s relatively rare. And that’s for slow charging. You can always charge slower but if you install a circuit for EV charging it’s nice to have a good one. An old Renault Zoé equipped with a Continental power train and onboard charger had up to 43kW on AC, but the industry seem to prefer external DC chargers for faster charging. And that starts about 50kW. Though nowadays people would avoid such slow fast chargers and prefer the 100kW+.
shepherdjerred 3y ago
> a 20A microwave is probably something you'd want to supervise pretty closely Aren't standard microwaves 15A? Wouldn't a 15A -> 20A microwave just be 33% more powerful? Is that a dangerous jump? I know very little about electricity
- huytersd 3y ago
  If I’m not mistaken 15A is a standard residential wall outlet with 14 AWG wires. 20A isn’t that much more but since it’s not standard, I think it would require a higher gauge of wire such as 12 AWG and an updated breaker. I don’t know much about electricity either
  - rssoconnor 3y ago
    20A is now standard in kitchens[0]. For example, when I moved in, all my kitchen outlets were 20 amps. The sockets look like https://en.wikipedia.org/wiki/File:NEMA_5-20R.svg https://en.wikipedia.org/wiki/File:NEMA_5-20R.svg [0]Requirement: Provide at least two 20-amp, 120-volt circuits to supply power to GFCI (Ground Fault Circuit Interrupter) electric receptacles for countertop and eating areas. -- https://www.thespruce.com/kitchen-electrical-code-basics-1821527 https://www.thespruce.com/kitchen-electrical-code-basics-182...
    - shepherdjerred 3y ago
      Oh that's nice! About a year ago I was considering a 20A countertop appliance (espresso machine), but my kitchen only had 20A plugs for the fridge/oven.

aidenn0 3y ago

It's only 33% more power than a regular microwave (which requires a 15A circuit).

freshpots 3y ago

"The oven must be on a SEPARATE, 20 Amp, 60 Hz-120V GROUNDED CIRCUIT." 20A @ 120V is only 2.4 kW max while you should only run it at 80% of the circuit/breaker load so 1.9 kW. Not exactly a fast charging EV circuit. It is not that much greater than a 15A circuit. It would take over an entire day to charge a typical EV, e.g Tesla LR Model 3, from 10-90%

speedgoose 3y ago
Yes, a typical EV has a 11kW onboard charger. Some have up to 22kW but it’s relatively rare. And that’s for slow charging. You can always charge slower but if you install a circuit for EV charging it’s nice to have a good one. An old Renault Zoé equipped with a Continental power train and onboard charger had up to 43kW on AC, but the industry seem to prefer external DC chargers for faster charging. And that starts about 50kW. Though nowadays people would avoid such slow fast chargers and prefer the 100kW+.

shepherdjerred 3y ago

> a 20A microwave is probably something you'd want to supervise pretty closely Aren't standard microwaves 15A? Wouldn't a 15A -> 20A microwave just be 33% more powerful? Is that a dangerous jump? I know very little about electricity

huytersd 3y ago
If I’m not mistaken 15A is a standard residential wall outlet with 14 AWG wires. 20A isn’t that much more but since it’s not standard, I think it would require a higher gauge of wire such as 12 AWG and an updated breaker. I don’t know much about electricity either
- rssoconnor 3y ago
  20A is now standard in kitchens[0]. For example, when I moved in, all my kitchen outlets were 20 amps. The sockets look like https://en.wikipedia.org/wiki/File:NEMA_5-20R.svg https://en.wikipedia.org/wiki/File:NEMA_5-20R.svg [0]Requirement: Provide at least two 20-amp, 120-volt circuits to supply power to GFCI (Ground Fault Circuit Interrupter) electric receptacles for countertop and eating areas. -- https://www.thespruce.com/kitchen-electrical-code-basics-1821527 https://www.thespruce.com/kitchen-electrical-code-basics-182...
  - shepherdjerred 3y ago
    Oh that's nice! About a year ago I was considering a 20A countertop appliance (espresso machine), but my kitchen only had 20A plugs for the fridge/oven.