Is it reasonable to have an open nose of 250A total air pressure 100A 35 square copper wire with two

How many types of air switches are there? (Model, Current A).

At present, the household uses the DZ series of air switches (small circuit breakers with leakage protection), the common models are the following specifications: C16, C25, C, C60, C80, C100, C120 and other specifications, where C represents the trip current, that is, the starting current, for example, C32 means that the starting current is 32 A, and the general installation of 6500W water heater should use C32, and the installation of 7500W and 8500W water heaters should use 0 air opening. Common models in the industry are:

DW and DZ types for power circuits are divided into 20, 32, 50, 63, 80, 100, 125, 160, 250, 400, 600, 800, 1000...Unit a). Air switch model:

D stands for power and C stands for lighting. c65n 1p-:c1a c2a a c6a c10a c16a c20a c2

How many amps are generally used for household indoor total air switches? The meter is used behind 60a, and the house is always on.

40A can be used for a total of 8 kilowatts (40AX220V) of electrical power in a regular manner, which is generally no problem for household use (unless there are five or six air conditioners and two or three electric water heaters to be used at the same time, then a higher current is required). If there is no electrical appliance or short circuit in the line, etc., and it suddenly trips, it is likely that the quality of the main switch of the trip has begun to have problems, and it is recommended to replace one. In my house, there was a leakage switch that tripped at the unprovoked end, and even removed the connected output line, and the gate was pulled up or jumped down directly.

The explanation is that this leakage switch is broken. If you change it to a new one, it will be solved.

How many amps of air switch to choose at home?

Optional: total 20A leakage + overload protection switch, plug in 10A, according to 10A Although the size of the wire is related to the switch, it is generally considered separately in the design.

How much air should be used in the bathroom.

To use the socket circuit of high-power appliances, a 20-amp air switch can be used, and the rest of the 16-amp air switch is sufficient. The air switch combines control and many protection functions, and in addition to causing contact and breaking currents, it can also cause short circuits in circuits or electrical equipment, and can also protect against phenomena such as severe overload or undervoltage. Generally, each air conditioner is divided into separate circuits, the sockets of the kitchen and bathroom are divided into one separately, the rest of the sockets can be divided into 1 to 2 channels according to the situation, and all the lighting can also be divided into 1 to 2 channels.

35 square copper wire can be multiplied by six times the current, which is 210A current. 210A current multiplied by 380V voltage equals 80 kilowatts. So it's appropriate.

Hello: 1, cross-sectional areaThe copper wire of the safe current is95a

2. Rated current100aThe air switch is matched with a copper noseof,Wiring widthCan't afford itThe line of the nose.

It can load 20-25 kW at 220V. And it is mainly divided into the following three categories:

A switch - 50 kilowatts for electric load, 20 kilowatts for 220V resistive load, 66 kilowatts for 380V;

A - 16 kilowatts for electric load, 6 kilowatts for 220V resistance load, 380V21 kilowatts for resistive load.

Square copper core wire - 25 kW for electrical load, 10 kW for 220V resistive load, 380V 33 kW.

Note: Generally, the rated current of the empty opening is 2-3 times the rated current of the line. 100A air-open three-phase load 25kw, single-phase 10kw32A air-open three-phase load 8kw, single-phase less than 4kw10 flat single-phase 10kw, three-phase 25kw.

The 100A air opening can carry a load of 22KW at 220V voltage and a load at 380V voltage. The power calculation formula has a conversion success rate of

1. For single-phase electricity p=ui=220*100=22000w=22kw, 100A air opening can carry 22kw load.

2. For three-phase electricity, the power factor is calculated as p= 3uicos = 3*380*100*, and 100A can be loaded when the air is opened.

It is best to calculate that about 87% of the power, that is, between kilowatts and kilowatts, then the rated current of the electrical equipment needs to be controlled at about 80A, otherwise it is easy to burn out the air open, which will affect the normal use of the electrical equipment, and even bury potential safety hazards.

Hope it helps.

100A air opening can carry 100A load.

The conversion success rate is: for single-phase electricity p=ui=220*100=22000w=22kw, 100A air opening can carry 22kw.

For three-phase electricity, the power factor is calculated as p=3uicos=3*380*100*, and 100A can be loaded when the air is opened.

How the air opening works

There are three types of tripping methods: thermal, electromagnetic and duplex. When the general overload occurs in the line, although the overload current can not make the electromagnetic tripper move, it can make the thermal element generate a certain amount of heat, promote the bimetal sheet to bend upwards when heated, push the lever to disconnect the hook and the lock, break the main contact, and cut off the power supply. When the line is short-circuited or seriously overloaded, the short-circuit current exceeds the instantaneous tripping setting current value, and the electromagnetic tripper generates a large enough suction force to suck the armature and hit the lever, so that the hook rotates upward around the shaft seat and disengages the lock, and the lock breaks the three main contacts under the action of the reaction spring to cut off the power supply.

The tripping mechanism of the switch is a set of connecting rod devices. When the main contact is closed by the operating mechanism, it is locked in the closing position by the latch. If a fault occurs in the circuit, the relevant tripper will act to disengage the locking hook in the trip mechanism, so that the main contact is quickly disconnected by the release spring.

According to the different protection functions, the tripper can be divided into overcurrent trippers and loss-of-voltage trippers.

100A switch - 50 kW for electric load, 20 kW for 220V resistive load, 66 kW for 380V; 32A - 16 kW for electrical load, 6 kW for 220V resistive load, 21 kW for 380V. 10 square copper core wire - 25 kW for power load, 10 kW for 220V resistive load, 380V 33 kW. %d%a

The secondary rated current of the 50kva transformer is squared, the rated current carrying capacity of the cable is 113A, and it is completely possible to cooperate with the air switch of 100.

A 35 square cable can carry a 50kva transformer, but it is not right to choose an air switch, and a high-voltage vacuum circuit breaker should be chosen.

It is feasible for the wiring operator to directly press several wires into a wire nose and connect them to the main circuit breaker, and it is safer and more reliable than other methods, so it can be used with confidence.

Yes, I've had similar problems. An XL-21 cabinet, the main switch is melted with a 200A knife, and there are 10 below (shell specification 100A) open empty, I require that each empty power cord must be drawn from the main switch (not allowed to be opened on the empty switch), the high current switch is installed in the lower row (the wire is thick and can be a little longer), and the small current switch is installed above (the line is thin and short), and the short-circuit current is mainly considered! Multiple wires are pressed with an open nose (copper wire lugs 500a) and soldered.

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No!

The air opening current parameters of the post-stage should not be higher than that of the pre-stage.

The configuration principle is as follows:

1 Calculate according to the capacity of the device and the way it works Calculate the current , please accept my best wishes.

2 Select the distribution line according to the kWh current calculation and load calculation.

3. According to the calculated current and line specifications, select the distribution protection switchgear.

The circuit breaker plays the role of a protection switch, and the rated current of the protection device should be slightly greater than the current of the instrument. On the other hand, the rated current of the switch should not be greater than the lasting current of the line. The latter point is sometimes easy to overlook, so the circuit is prone to problems and there is no slight overload causing the circuit breaker to trip.

General: The cable under the 100A circuit breaker should not be less than 35mm square.

The principles of configuration are:

1. According to the capacity and working mode of the equipment, calculate the [calculated current];

2. Select the distribution line according to [Calculate Current] and [Calculate Load];

3. According to the calculated current and line specifications, select the distribution protection switchgear.

Remember: the circuit breaker is used as a protection switch, and the rated current should be slightly greater than the calculated current to protect the equipment, and on the other hand, the rated current of the switch cannot be greater than the long-term continuous current of the line. The latter point is sometimes overlooked, and the line is prone to problems if a slight overload does not trip the circuit breaker.

General: The cable and wire under the 100A circuit breaker should not be less than 35 square millimeters.

It's better to use a molded case circuit breaker than an air switch!

35 square is more suitable.

If the model unit of copper wire OT opening nose is 200A, it is suitable for 50 square cable connectors, and the reasons are as follows:

1. Copper nose model number and meaning, such as: OT10-8, O is the representative model. t is the representative material. 10 represents the wiring square (with 8-10 square cables). 8 represents the screw hole diameter.

2. Copper nose specifications: square The common models are OT, UT, RV, RNB, SNB, C45, SC, etc. The commonly used models of copper nose above 10 square are: DT, DTG, DL, DTL, SC, JM, JG, GT, GL.

3. If it is a hard cable, the wire nose used is DT type, which is the kind of tubular wire nose. This model is marked with the square number of wires, and the size of the line nose is selected according to the cross-sectional area of your line. For example, if you have a 185 cable, the line nose model should be DT-185.

4. If it is a flexible cable, it is recommended to choose the line nose of the OT series, also commonly known as the open line nose. It is recommended that cables 240 and 185 be selected and 120 should be selected for 500A, 95 for 400A, 70 for 300A, 50 for 200A, 35 for 100A, 35 and 25 for 100A, 16 for 60A, 10 for 30A, 6 for 15A.

Copper wire nose: also known as wire nose, copper wiring nose, copper pipe nose, terminal block, etc., the names of various places and industries are different. It is a connector used for connecting wires and cables to electrical equipment, the top side is fixed on the screw edge, and the end is the copper core of the wire and cable after stripping.

Only those larger than 10 square meters use copper noses, and wires less than 10 square meters do not use copper noses, and use cold-pressed wire noses instead. Copper noses are divided into tin-plated and non-tinned surfaces, tube-pressed and oil-plugged.

OT Open Models, 3A, 50A, 10A, 20A, 30, 40A, 50A, 60A, 80A, 100A, 150A, 200A, 250A, 300A, 400A, 500A, 600A, 800A, 1000A OT copper open nose series products use high-quality copper plate stamping ,..