6 ms·
9kW, as in, a 40A current in 220V? If you consider 127V in some regions, it's a 70A current, so wires at least 3mm thick for 40A, or 5mm for 70A. These seem muc
by edwcross 2y ago
9kW, as in, a 40A current in 220V? If you consider 127V in some regions, it's a 70A current, so wires at least 3mm thick for 40A, or 5mm for 70A. These seem much scarier (and prone to fire risks if not respected) than the shower itself. Without taking into account the likelihood of a breaker box tripping at such high loads.
It seems that the standard rated power of Brazilian showers is 5.5 kW. But then again, Irish weather seems harsher than Brazilian weather.
- skrause 2y agoSeeing the constructions makes me think that we're blessed in Germany for getting all three phases even in single apartments. Here it's quote common (if no cheaper method of central hot water is available) to have on-demand water heaters like https://www.clage.com/de/produkte/durchlauferhitzer https://www.clage.com/de/produkte/durchlauferhitzer which usually have a maximum power output of 21 kW, so they aren't just used for showers, but can also fill up a bathtub quite quickly. They also don't hang inside the shower, but on any nearby wall. They're connected to three-phase power with a 32A fuse on each phase.
- throwup238 2y agoThose heaters are also popular in Russia, at least in Soviet-era buildings where the central water heater breaks frequently.
- rodrigodlu 2y agoBoth 127 and 220/240V are 32A, 40A Max. The 127 just heat less. Max 5500W. The 240 can go up to 7500W in some versions.