Does the socket have to have a left zero right fire? What will be the consequences of the reverse? Old electricians don't necessarily know

When wiring, we all know that it is left zero and right fire. Many people have a question. Is there anything unusual about the reverse connection?  As a matter of fact, for professional electricians, the left and right wires are connected in this way, but many people cannot answer why.

Through the annual big data survey of electrical appliance accidents:
Most of them are right-handed. If the plug cannot be pulled out, many of them will try their best to change the depth of grasping and pull it out. Generally, the fingertip of the right thumb will be stretched and pushed against the socket as a fulcrum. If the plug is pulled out, a gap will be formed between the plug and the panel. If the nail is soft, the nail may bend and touch the electrode. In this way, an electric shock will be formed. Therefore, this is why some people can get an electric shock on the socket.

Then why do you want a left zero right fire?
1, in order to unify wiring, convenient installation and maintenance
When connecting wires, as long as the zero-wire line is unified, the zero-wire line can be quickly identified and professionally wired for installation and maintenance, so as to avoid the circuit failure caused by the mixed use of the zero-wire line. Another point is to ensure that the installed electrical switch can accurately cut off the wire line, thus achieving a safe state.
2, not only is the electric wire left zero right fire, in daily life, we use the faucet is also left hot right cold, public toilets are left male right female, so said the circuit left zero right fire is a commonly known specification.
3. The heart is on the left side of the chest. Ventricular fibrillation is the main cause of death after electric shock. Therefore, researchers show that 67% of the current from the left hand to the biped passes through the heart. If it is from the right hand to the biped, only 3.7% reaches the heart, if it is from the right hand to the left and right, only 3.3% and from the left foot to the right foot, only 0.4%.
Therefore, through data analysis, if the left hand gets an electric shock, it is closest to the human heart, which may lead to life danger. If the right hand gets an electric shock, at least life can be guaranteed. Therefore, the design of the electric wire also has its reasons. The design of the left zero right fire is to reduce the probability of the heart getting an electric shock.

Some people say that for a small socket, the left and right fire connections will not affect the use of the socket. Yes, it will not affect the use of the socket. However, once you get an electric shock, you will know the importance of the connection. No one can guarantee that there will be no leakage and electric shock in any household. I think you should know all this common sense, whether it is an electrician or not.