How many watts can a household 220V use electrical appliances normally? Where is the electrician???

This problem is encountered by many people with computers! Especially in the summer, when many people turn on the air conditioner, the computer is almost unusable, and the voltage jumps to a very low level every few minutes, and the computer will restart, and the computer at home does not restart! Only the cat rerises!

Prove that the voltage is at least 170V or more, buy a 1000W voltage regulator and connect your 3 computers to solve the problem. If it's as low as 100V or less, there's no way around it.

There is also a possibility that the transformer used in your area has something to do with it, the transformer power is too small, and there are too many residents around it.

It's not the problem of the electrical appliances, it's the instability of the power supply voltage. Install a regulated power supply.

Go directly to the voltage regulator, tell him what appliances you have in your house, and ask him to give you one to install on your power bus, and all your household appliances will work at a stable voltage.

There are two ways: call on the power supply bureau to replace the transformer (suspension) with higher power, and then install a voltage regulator with a quality of at least 1000W on the main line of the household. Comrade, it's better to rely on yourself! Spend money early and solve problems early.

First of all, the electricity of 220 does not mean how many watts can be used normally! This mainly depends on how big the wire you pull, if your home is pulling 10 square wires, even if you have 100 computers in your home, it will be fine, and on the contrary, your home is pulling a square wire, then you can only barely use an air conditioner, a computer, and then use the others will burn the wire. According to what you said, the voltage in your house is unstable, buy a voltage regulator and come back and install it, and it will be fine.

Remember, it's a regulator, not a transformer! The transformer is for high voltage).

According to common sense, the situation you are talking about is that the incoming power supply voltage in your home is low. Because, if the power supply voltage is within the normal range, and the indoor power cord meets the current residential electricity design requirements, if there are many household appliances or the total power of electricity is high, it will cause the indoor circuit breaker to trip. The solution is to find a power supply department and expand the installed capacity.

If you solve it personally, you can use a voltage regulator to do it. "A voltage regulator is not a transformer! The transformer is used for high voltage" obviously does not understand electrical common sense when saying this.

You can use 220V electrical appliances, the rated voltage of electrical appliances is 220V, but its normal working voltage is generally between 200V-240V, so it can work normally. However, it is not recommended to use it for a long time to avoid unnecessary losses.

Common national voltages and frequencies.

The common electrical appliances at home are 220 volts 50 Hz sine wave alternating current, 24V belongs to low-voltage electricity, which is generally used for control circuits, low-voltage lighting, etc.

China's household appliances are AC220V +-10%, 24V is generally used for industrial control, rarely seen, household low voltage is generally 12V or below.

The commonly used electrical appliances at home are 220V, and 24V is used in many places, which is difficult to explain.

The voltage use requirements of our country are stipulated as follows, 380V is the conventional industrial power electricity, and it is also the final backbone power supply network of household power supply.

220V is the conventional power supply voltage of China's home, and all electrical energy can be obtained from here.

36V and 60V are generally the lighting voltages used in special industrial environments, 24V is the industrial control signal voltage, and the use of diesel fuel for automobiles or engine systems is also 24V.

12V is the voltage standard used by general small electrical appliances, and the use of gasoline as the fuel of automobiles or engine systems is also 12V

According to the power = voltage * current, calculate the working current = power voltage = 5000 220 = to see if the current is less than the calibrated current on your air switch, if it is greater, the air switch will jump off.

The voltage is 220V, how many electrical appliances can withstand it, the key is that your meters, switches, wires and other capacity are enough.

This is not in terms of voltage. is from the current. 4000 watts 220 18 (amps), as long as your home meter, line can withstand 18 amps. Generally, household meters and wiring can withstand it.

If the power cord in your home is large enough (6 10 square meters), the voltage of 220V with a load of 5kw will not have much voltage drop, which is completely fine.

It depends on the thickness of your wire, the size of the empty opening, and the size of the insurance.

The voltage of 220 volts can withstand the work of electrical appliances, mainly determined by the resistance value of the wire, according to the home circuit in parallel connection mode or formula p=uxi, the more electrical appliances connected, the greater the current in the wire, and then according to Joule's law q=i2rt, it can be known that in a certain resistance value, a certain period of time, the more heat generated by the current in the conductor, the wire will be in danger of burning. Therefore, the number of appliances that can be connected is determined by the resistance to the wires.

Usually, household electricity is around 3-10 kilowatts.

As the power of electrical appliances in the home is getting bigger and bigger, the household current will also be higher, and the high-power electrical appliances in the family mainly include air conditioners, bath bombs, water heaters, induction cookers, etc.

The load of these electrical appliances is about 2-3 kilowatts, usually more than kilowatts or more belong to Shixun high-power electrical appliances, pay attention when using electrical appliances, do not use multiple high-power electrical appliances at the same time, to avoid short circuits.

Dangerous situations are common sense:

1. When someone is electrocuted, turn off the power in time, use dry wooden sticks and other insulating objects to save people, and do not pull them directly by hand.

2. When the line is **, do not directly use water to pour, to cut off the power supply first, use dry powder or gas fire extinguisher to extinguish the fire, if there is no professional equipment in the house, you can use dry clothes, quilt cover to extinguish the fire, so that the fire is isolated from oxygen, of course, this situation can only be used in the stage when the fire is relatively small, if the fire is too large should be away from the alarm.

If conditions permit, we can also choose some advanced equipment to help complete daily electricity monitoring, so that we can use electricity more assured and safer. <>

Theoretically, the power does not change when the voltage changes, that is, the power does not change no matter how the power supply voltage changes. Therefore, the power after inverter is 120W. Current i = p v

120 220 = amps.

In fact, the process of inverting is very complex, and the inverter itself consumes a lot of energy. The specific consumption has a lot to do with the design of the inverter circuit and the advantages and disadvantages of the device. Generally speaking, 120 watts of DC inverter to AC is above 100 watts.

3V to 220V can be made, but there are almost no on the market. Because if 3V is 120 watts, its current is 40A, which is a very large current, and the general wire will heat up or even burn out. You should dispel the idea of 3V to 220V.

In addition, 12V inverters are common, and 5V ones are also available.

It depends on the thickness of your wire, the thicker (and more expensive), the greater the current that can flow, and the greater the p=220*i.

1. When the electrical appliances at home are not in use, the voltage is 220V; All of them use electricity, and the voltage is still 220V. There are factors such as the load in your home is not large, the distance from the bus to your home is short, or the conductor from the bus to your home is large enough, and the voltage drop is less.

2. The voltage passes through the transformer, wire, etc., there is always a voltage drop, and the voltage is different at different times, in different places, in different positions, etc., and the voltage is higher in places close to the transformer; Far away from the transformer, the voltage should be lower; When the electricity consumption is low, the voltage should be higher; During peak demand, the voltage is lower. In the average person, the voltage will not be 220V, it will always be more or less, and the change is between a few volts, and the average person can't see it. National regulations:

For 220 volt single-phase power supply, the allowable voltage deviation is +7% and -10% of the rated voltage. That is, if the voltage is between 198V-235, the electrical appliances can work normally.

3. If a resistor is connected on 220V, the voltage at both ends of the resistor will change with the change of the resistance value. If the resistor power is small and the current is small, the voltage change cannot be seen. If the resistor power is large, the current is large, and the voltage drop changes greatly, the voltage change can be clearly seen.

The appliance is equivalent to a load and is connected in parallel with 220V. In principle, the more loads there are, the lower the voltage will be.

However, 220V is 220V after a high voltage drop of 10kVA, so the power of the substation absolutely meets the requirements of household appliances, and the voltage will not change.

1: 220V is AC. It is dangerous to connect resistors.

2: 220V belongs to strong current and high voltage can only be connected in series. The series resistor does not change the voltage, because it is an AC signal, it only has an effect on the current.

3: If you want to adjust the resistance to change both ends, you can use the DC power supply to do the experiment. This is achieved by parallel voltage division of resistors.

Okay, two questions :

1.Because all household appliances are connected in parallel, the voltage will remain unchanged at 220V according to the principle of "equal voltage of parallel circuits".

2.If you are connecting a resistor in parallel, then it remains the same. If you connect a series into a circuit, the voltage at both ends of the resistor will change as the resistance value of the resistor changes.

As long as the household electricity does not exceed the load of the wire diameter and the load of the transformer 220V will not change, as for the connection of a resistor, the voltage will change with the change of the resistance value, but the general design of the resistor The load is relatively small, and it is not safe, so it is not recommended to use.

The internal resistance of the mains is very small, because it is powered by a high-power transformer, and your appliances are used, and the load current increased by the transformer is negligible. You plug in a few more resistors, and the voltage doesn't change.

This has nothing to do with electrical resistance, and the voltage drop we are talking about refers to the voltage drop caused by the resistance of the transmission wire, so that the user's voltage cannot reach 220v, not that you use electrical appliances to divide the voltage, all the electrical appliances of the user are connected in parallel, and their voltages are the same 220v

Hello landlord!

The appliances we use in our homes are connected in parallel, not in series.

The voltage of parallel connection is constant, it is 220V, and if it is connected in series, the current of the whole circuit is the same, and the voltage changes.

Household appliance circuits are connected in parallel.

The household line for general residential electricity is 10-16 square copper core wire.

The maximum amount of pants can carry 70-94A current, but the pure flashlight used at home for safety is about, which is about 56-75A.

Based on this safe current, the maximum safe power can be obtained.

220*56 to 220*75, that is, if you enter the house with 10 square meters of pure cherry blossoms, it is about 220*56 = or so.

If you enter the house with 16 square meters, it is about 220*75=.