How many square meters does it take to install a water heater at home?. It is hot. It takes about fifteen minutes to open. There is no air conditioning and refrigerator in the house. The distance from the meter to the bathroom is about seven or eight meters. Is it safe to have 2.5 square meters?
4 flat is small, the hot type electric water heater, the best is to 6 flat line, because the main power see you choose, as you choose 2.2KW-3KW water heater, the basic choice is 4 flat, use the big power, you need 6 flat line. Moreover, the superior protection breaker should also be replaced. 4 flat line, you'd better match the 20A breaker. If you use 6 flat line, you'd better use 32A breaker. The premise is single-phase 220V. 380 of the three-phase is calculated.
For safety purposes, it would take more than 4 square millimeters of wire to be used alone
That is, the heat type water heater power is at least 5000W or more, the current is greater than 23A! By 1 square millimeter 5A conservative algorithm, 2.5 mm2 line is difficult to do, you need at least 4mm square.
