5 ms·

And again, that doesn't matter because that's for inrush current for starting the motors, and not a steady state draw.

by ikiris 5y ago

endisneigh 5y ago
It does matter because my comment was talking about breakers in a typical house electrical panel. The breaker needs to be able to handle the peak, not the average. Just go Google Mitsubishi hyper heat - it clearly states 50 amps per condenser. I’m not sure what’s difficult to understand about this.
- lixtra 5y ago
  > Just go Google > I’m not sure what’s difficult to understand about this. Of course you may expect the casual reader to do the googling themselves. But if you want to make your arguments heard, it’s helpful to put a link to an authoritative source. Of course this is also true for anyone making the counter claim.
  - endisneigh 5y ago
    https://www.google.com/search?q=mitsubishi+hyper+heat+amperage&rlz=1C1ONGR_enUS974US974&oq=mitsu&aqs=chrome.0.69i59l3j69i57j69i60l4.1231j0j7&sourceid=chrome&ie=UTF-8 https://www.google.com/search?q=mitsubishi+hyper+heat+ampera... Of course the Google link has nothing to do with my claim anyway, since my original post supposed that 50 amps was required by breaker.
xxs 5y ago
Every single heap pump that I have heard of - has a slow start (triac based usually) module. Also the breakers should be type C (not B). I wonder if having higher voltages in the US might be adopted for higher power devices. 110-120V is just too low, including for car charging.
- midasuni 5y ago
  My understanding from technology connections is that US circuits are 230ish volts, but it’s often centre tapped out to sockets. I can’t imagine a permanent high energy install like a heater, shower, car charger, oven or heat pump would be 110v. If you plug in via a standard socket in europe you get about 3kW, which given european driving is probably fine overnight, but you’d want more than that in the US
  - xxs 5y ago
    >My understanding from technology connections is that US circuits are 230ish volts, but it’s often centre tapped out to sockets. Indeed. My heat pump is 3phase 230v/16A one, that's 11kW peak power, the pump itself is 5kW, though with the rest being a resistive heater. Car charging is similar as well 3phase is quite standard nowadays. My understanding is that the US power supply is pretty similar to the one in Europe when it comes to delivery, and industrial equipment runs 3phase, 240v - something you can find at a lot (most new) homes in Europe.
  - briHass 5y ago
    That's right. All power-hungry appliances (those that produce heat, mostly) get their own 240V circuit at amps typically ranging from 20-50. Electric dryers and water heaters usually get 30A @ 240V, stoves get 40A-50A @ 240V, and AC/heat pump units depend on size, but usually 30A+ @ 240V. It's really just our basic receptacles that are 15A or 20A @ 120V. This is plenty for 99.9% of uses, with the exception of some kitchen appliances that produce heat (e.g. a plug-in kettle.) If you bought a unit that required higher voltages and was rated for use in the US, you could always have an electrician wire a 240V circuit with one of the standard 240V receptacle types.
    - midasuni 5y ago
      30A/7kW for a dryer? Wow how large are they and how long does it take to dry? My oven is on a dedicated 30A circuit, but the dryer, washer, dishwasher, microwave, kettle are all on the same 32A circuit with individual 13A plugs and don’t trip it.

And again, that doesn't matter because that's for inrush current for starting the motors, and not a steady state draw.

by ikiris 5y ago

And again, that doesn't matter because that's for inrush current for starting the motors, and not a steady state draw.

It does matter because my comment was talking about breakers in a typical house electrical panel. The breaker needs to be able to handle the peak, not the average. Just go Google Mitsubishi hyper heat - it clearly states 50 amps per condenser. I’m not sure what’s difficult to understand about this.

lixtra 5y ago
> Just go Google > I’m not sure what’s difficult to understand about this. Of course you may expect the casual reader to do the googling themselves. But if you want to make your arguments heard, it’s helpful to put a link to an authoritative source. Of course this is also true for anyone making the counter claim.
- endisneigh 5y ago
  https://www.google.com/search?q=mitsubishi+hyper+heat+amperage&rlz=1C1ONGR_enUS974US974&oq=mitsu&aqs=chrome.0.69i59l3j69i57j69i60l4.1231j0j7&sourceid=chrome&ie=UTF-8 https://www.google.com/search?q=mitsubishi+hyper+heat+ampera... Of course the Google link has nothing to do with my claim anyway, since my original post supposed that 50 amps was required by breaker.

xxs 5y ago

Every single heap pump that I have heard of - has a slow start (triac based usually) module. Also the breakers should be type C (not B). I wonder if having higher voltages in the US might be adopted for higher power devices. 110-120V is just too low, including for car charging.

midasuni 5y ago
My understanding from technology connections is that US circuits are 230ish volts, but it’s often centre tapped out to sockets. I can’t imagine a permanent high energy install like a heater, shower, car charger, oven or heat pump would be 110v. If you plug in via a standard socket in europe you get about 3kW, which given european driving is probably fine overnight, but you’d want more than that in the US
- xxs 5y ago
  >My understanding from technology connections is that US circuits are 230ish volts, but it’s often centre tapped out to sockets. Indeed. My heat pump is 3phase 230v/16A one, that's 11kW peak power, the pump itself is 5kW, though with the rest being a resistive heater. Car charging is similar as well 3phase is quite standard nowadays. My understanding is that the US power supply is pretty similar to the one in Europe when it comes to delivery, and industrial equipment runs 3phase, 240v - something you can find at a lot (most new) homes in Europe.
- briHass 5y ago
  That's right. All power-hungry appliances (those that produce heat, mostly) get their own 240V circuit at amps typically ranging from 20-50. Electric dryers and water heaters usually get 30A @ 240V, stoves get 40A-50A @ 240V, and AC/heat pump units depend on size, but usually 30A+ @ 240V. It's really just our basic receptacles that are 15A or 20A @ 120V. This is plenty for 99.9% of uses, with the exception of some kitchen appliances that produce heat (e.g. a plug-in kettle.) If you bought a unit that required higher voltages and was rated for use in the US, you could always have an electrician wire a 240V circuit with one of the standard 240V receptacle types.
  - midasuni 5y ago
    30A/7kW for a dryer? Wow how large are they and how long does it take to dry? My oven is on a dedicated 30A circuit, but the dryer, washer, dishwasher, microwave, kettle are all on the same 32A circuit with individual 13A plugs and don’t trip it.