A wire of different thickness can carry different currents

Time:2018-12-03 Views:193

The thicker the wire, the greater the current it can carry.

The wire carrying capacity below is for reference.For motor electrical appliances, the starting current is large, should reduce the wire load flow.

1.5 square meters of wire --10A--220V 2200W

2.5 square meters of wire --15A--220V 3300W

4 square wires --20A--220V, 4400W

6 square wires --25A--220V, 5500W

Examples:

1. Each computer consumes about 200 ~ 300W of power (about 1 ~ 1.5a), so 10 computers need A 2.5mm copper core wire to supply power, or there may be A fire.

2. The power consumption of the big 3 air conditioners is about 3000W(about 14A), so one air conditioner needs a separate 2.5mm copper core wire for power supply.

3, now the housing into the line is generally 4 square millimeters of copper wire, therefore, at the same time to open the household appliances must not exceed 25A(that is, 5500 watts), someone will replace the wire inside the house into 6 square millimeters of copper wire is not useful, because the wire into the meter is 4 square millimeters.

4, early housing (15 years ago) into the general line is 2.5 square millimeters of aluminum wire, therefore, at the same time to open the household appliances must not exceed 13A(that is, 2800 watts).

5. The household appliances with high power consumption are: air conditioner 5A(1.2 pieces), electric water heater 10A, microwave oven 4A, electric rice cooker 4A, dishwasher 8A, washing machine with drying function 10A and electric boiling water heater 4A.

In the fire caused by power supply, 90% of the fire is caused by the joint heat, so all the joints must be welded, the contact device that cannot be welded must be replaced (such as socket, air switch, etc.) for 5 to 10 years.

Disclaimer: the above parameter value is for reference only, because electrical laying environment is different, there is a certain difference, so it is not absolutely safe value, please find a professional, have sufficient experience of the special person, thank you!