Quote from: carewolf on February 10, 2017, 04:38:55 PMQuote from: mrm on February 05, 2017, 06:36:40 AMQuote from: Hans Lemurson on February 05, 2017, 05:51:36 AMI wouldn't use the 175 watt heaters as a "reasonable example" of anything, though. Multiply the wattage by 10 and now you're in the range of "Portable Space Heaters".
Yes and i forgot about those. Such heater should have at least 2kW to heat up a small room. If i remember correctly, we need around 100W to heat up a 1m2 in winter, with good thermal isolation etc. Without isolation (steel or stone walls) it should be 200W or more. So for small rimworld bedroom 4x4 with very poor isolation and a thin steel tile roof, we need at least 3kW to keep it warm.
I grew up in a house with electric heating and cold winters. We had 1000-2000W heaters in each room depending on size. But the didn't actually use anywhere near their maximum capacity most of the time. On average a 20m² room would use 100-200W of heating. The full power is only needed to warm a cold room in a reasonable time after airing out (which also meant you couldn't reheat all rooms at the same time as that would blow the fuses to the entire house).
Absolutely not. You either had super-efficient insulation (like spaceship level efficient), or it was like 10oC outside. :V I actually have masters in power engineering (if something like that exists in the west - it sure does here, in Poland

Also, if you had electric heating in your house (and only that) fuses were also designed to be able to operate in such conditions. If I were to guess, I'd go with three-phase on that, but nothing guaranteed. :2
If you really want me to, I can make you some calculations for the designed heating power (or whatever it is called) - the way you determine how much heating capacity you want to have in your house.