|Түрү||30a катардагы эритүүчү тетик|
Civilian USES electricity is 220V, calculate the power that the fuse of 30A can bear by this is 6600W, add the power of household electric appliance calculates together, do not exceed 6600W, should have no problem.
The selection fuse is generally between 1.5 and 2.5 times, to be determined according to the special circumstances of the load, such as the motor start current is large on the selection of a larger point.
Answer 1: No, the parameters differ too much. Under normal circumstances, the insurance will burn up after overload, but the 70A will not necessarily be used, and there are serious safety risks.
Answer 2: Lost the function of the fuse.It would break after 30 amperes, but if we switched to 70 amperes, it wouldn't break, and it wouldn't make sense
Answer 1: you so much electric equipment is impossible to use together, and the time that electromagnetism kitchen USES is not long, you press electromagnetism kitchen 3000W to calculate good, the current when the highest grade is 13.7A, with 15A good.
Answer 2:1 building said although true, but in real life du fuse choice must be greater than the calculation results, zhi if just equal to the results of the calculation, with the full open electrical appliances, it is very easy to blow out the fuse, many electrical appliances in just opened the moment will be much bigger than usual current!Accordingly go up in the choice of domestic expenses fuse, want bigger than the result of computation 0.5 to 1 times advisable!Choose a 30 - to 40-amp fuse like your home.