3 ms·

https://www.centurysaunas.co.uk/how-much-does-a-sauna-cost-to-run/ https://www.centurysaunas.co.uk/how-much-does-a-sauna-cost-t... Says an electric heater (not

https://www.centurysaunas.co.uk/how-much-does-a-sauna-cost-to-run/ https://www.centurysaunas.co.uk/how-much-does-a-sauna-cost-t... Says an electric heater (not infrared) sauna is about 4.5kW (about half my shower), takes about 40 minutes to heat up, then 20 minutes in it, so say 5kWh if you time it right, maybe 8kWh if you have a longer time in it or aren't perfectly tires. Even at current uncapped UK prices of 60p/kWh that's about the cost of a takeaway coffee. I'd use a sauna a lot more if the UK were like Germany (I was in Munich recently for work and used it every day), however there are rarely saunas in UK hotels, and those that are require you to wear clothes! Sadly haven't got enough space at home for one.

eesmith 4y ago
If I understand things right, the tricky part for someone "living in a rented flat" like faebi would be the wiring, that is: > For a small sauna, basic wiring may cost around £100 to £200 4.5kW @ 230V is 19.6 amp, while it seems the British outlet maxes out at 13 amp, like the following quote from https://www.plugsocketmuseum.nl/British1.html https://www.plugsocketmuseum.nl/British1.html : > BS 1363 plugs are required to carry a BS 1362 cartridge fuse. Existing BS 1362 fuse ratings are: 13, 10, 7, 5, 3, 2 and 1A ampere. The same site says British ring circuits can typically handle 32 amp (see https://www.plugsocketmuseum.nl/RadialRingCircuit.html https://www.plugsocketmuseum.nl/RadialRingCircuit.html ), or 7 kW, so I assume the "basic wiring" cost is to wire into one of those existing circuits. Which isn't something a renter can likely get away with. In the US, 4.5kW @ 110 V is 40 amp, which is more than even a 20A circuit found in modern kitchens. It'll require something like a dedicated 220V/30A line used for a water heater (again, in the US), which will handle 6kW. Again, not something I think feasible for most people renting an apartment.
- iso1631 4y ago
  Yes you couldn't plug in a 13A fuse. Wiring a single circuit back to your MCU and putting a 30A breaker on it isn't expensive though, assuming you have spare space on the unit. You didn't mention renting
  - eesmith 4y ago
    I didn't, but my response was in the context of faebi's earlier comment in this thread, which clarified "I'm living in a rented flat and think I could fit one on part of my balcony."

eesmith 4y ago

If I understand things right, the tricky part for someone "living in a rented flat" like faebi would be the wiring, that is: > For a small sauna, basic wiring may cost around £100 to £200 4.5kW @ 230V is 19.6 amp, while it seems the British outlet maxes out at 13 amp, like the following quote from https://www.plugsocketmuseum.nl/British1.html https://www.plugsocketmuseum.nl/British1.html : > BS 1363 plugs are required to carry a BS 1362 cartridge fuse. Existing BS 1362 fuse ratings are: 13, 10, 7, 5, 3, 2 and 1A ampere. The same site says British ring circuits can typically handle 32 amp (see https://www.plugsocketmuseum.nl/RadialRingCircuit.html https://www.plugsocketmuseum.nl/RadialRingCircuit.html ), or 7 kW, so I assume the "basic wiring" cost is to wire into one of those existing circuits. Which isn't something a renter can likely get away with. In the US, 4.5kW @ 110 V is 40 amp, which is more than even a 20A circuit found in modern kitchens. It'll require something like a dedicated 220V/30A line used for a water heater (again, in the US), which will handle 6kW. Again, not something I think feasible for most people renting an apartment.

iso1631 4y ago
Yes you couldn't plug in a 13A fuse. Wiring a single circuit back to your MCU and putting a 30A breaker on it isn't expensive though, assuming you have spare space on the unit. You didn't mention renting
- eesmith 4y ago
  I didn't, but my response was in the context of faebi's earlier comment in this thread, which clarified "I'm living in a rented flat and think I could fit one on part of my balcony."