Ground wire how to connect?
1, according to the specification requirements, wire diameter equal to or less than 16mm2 when the ground wire diameter must be equal to the fire, the zero line, that is, the three wires must be the same.
2, the house installation of water and electricity when the three lines (fire, zero, ground) must be led to the indoor distribution box, the yellow and green line is the ground.
3, in addition to lighting (some drawings lighting is also three wires), all other outlets, including the weak box power is three wires.
4, utilities acceptance when the supervisor will certainly check the circuit, for the check of the ground with a socket inspector will know, not connected to the ground is not acceptable.
5, the grounding line can only be connected in parallel does not allow series connection, which is to ensure that at all times to have grounded to ensure the safety of electricity.
6, the socket to have a grounding line which is the minimum construction of common sense and requirements, the construction team generally cut corners on the line diameter, let's say 1.5mm2 line instead of 4 or 6mm2, but do not dare not install the ground, in case of trouble he is responsible for.
7, you double-check the line in the outlet box to see if the ground wire is not connected to the outlet.
8, no ground does not affect the use of electrical appliances, but once the leakage of electricity that is very dangerous.
9, if there is really no ground wire, you can find the construction team to claim compensation, or require re-threading and installation, even if the decoration contract does not emphasize the need to install the ground wire, you can also ask for compensation, no matter where the lawsuit is you win.
10, if you can not find the construction team, or your own decoration, I recommend that you re-threading to ensure the safety of a few dollars, after all, life is only once.
The role of the grounding wire
a, to protect personal safety
As a result of electrostatic discharge is prone to generate a large number of charges, if the electrical equipment does not get proper isolation, it will be very easy to electrical appliances and human body caused by a great deal of damage, and the role of the grounding wire is just to become a high-voltage equipment and the earth between the conductor, to play a role in avoiding us to be damaged by the purpose of the electric charge.
b, lightning
Placed in the past, once the occurrence of thunder and rain, utility poles and other equipment are often damaged because of lightning strikes, sometimes even days can not be used, so the role of the grounding wire in the role of lightning can be a very good protection, effectively extend the service life of electrical equipment.
c, to ensure normal operation
For some must have electricity to work, such as medical work, the role of the grounding wire is to avoid power outages encountered when the unexpected situation, not to be affected, still be able to operate normally a small load reference potential.
It is believed that through the above introduction, we understand how to connect the ground, I summarized 10 aspects, I hope to be able to help you, the role of the grounding wire in the end what it is, I also summarized for you, mainly in 3 areas: lightning, to protect personal safety, to ensure the normal operation of the work. Visible, and not just we think of the role of security. So related issues must be more understanding.