When the live work is done, the fire wire is broken first and then the zero line is broken. When the wiring is reversed, first connect the neutral wire and then connect the fire wire.
In the case of useful electrical appliances, regardless of whether the arc is to be connected first to the live line or the neutral line, the larger the arc generated by the use of the electrical appliances is, the larger the arc will generally be without the live working of the load, and the small load will work only when the protective work is performed properly. , The big load wants to make that arc not let you do.
So we must pay attention:
Connect the neutral wire before wiring, and then connect the fire wire. Do not work with the load. If the fire wire is connected first, the fire wire can be transmitted to the neutral wire through the load (such as a bulb).
When the wire is disconnected, the fire wire must be disconnected first and then the zero wire must be disconnected. There should be no load operation. If the zero wire is broken first, the wire can be transmitted to the neutral wire through the load (such as a light bulb).
When you plug in the socket, if you don't have a socket (such as a household appliance), you can choose which one you want. Remember the left and right fire (responsible for yourself, responsible for the family).
It is best to install the switch in the circuit and cut off the power first. If this is not possible, you must first disconnect or shut down all the electrical appliances to ensure that there are no electrical devices in the circuit.
Wear insulated gloves, leather shoes, and cloth shoes.
When you work, you must first cut off the fire line. Responsible for their own!
Experienced decorators know that both the first zero line and the hot line generate an arc. The greater the power of the appliance, the greater the arc generated. 220V low-voltage circuit is absolutely correct in the case that the human body is absolutely not grounded.
When the general circuit is broken, it is the first to break the line of fire, and then break the zero line, and the wiring is just the opposite. When connecting the socket, as long as there is no connection with the electrical appliances, whichever root is the same, remember that the left zero is right. If it is a switch, it is better to install it in the circuit. If you can't, turn off the power. If you can't, switch off or switch off all the electrical appliances. Make sure there are no electrical devices in the circuit. Excessive load will cause a large arc when the fire is removed. This will cause some damage to the maintenance personnel.
When working on electricity, electricians should remember to wear insulated gloves, put on electrician insulating shoes or dry wood boards, and use some other insulating tools. When you work, you must also cut off the fire line, even if there is a small current through the body at this time, but it will not pose too much of a threat to the body, but it is better to have someone beside the supervision to prevent accidents.
Some users Tucao direct power-off operation is not better, but does not rule out the need for live operating conditions, this time you need to pay attention, the operation should be standardized, the protection work must be in place, first to protect the zero line grounded, then work zero Lines, the final line of fire, the operation must be fast and accurate, so that the arc will be smaller.
When the circuit is wired, these sequences must be clearly understood. Not only the workers but also the landlord should understand it. After all, safety is the most important thing.
Zoolied's filters application:biochemical analytical instruments, medical equipment, beauty instruments, environmental protection testing instruments, fluorescence analysis instruments, optical communications, chemical testing instruments and other optoelectronic instruments.
Optical Filters,Dichroic Filters,Longpass Filters,Shortpass Filters
Zoolied Inc. , https://www.zoolied.com