We continue talking about the implements that every professional electrician must know perfectly. They are also known as square manhole boxes. They are used to connect cables and join switches or contacts. The electrical connection boxes in the facilities are of the utmost importance since they are housed and the connections and splices of electrical conductors are made in them that cannot be exposed or unprotected, in addition they must be protected from the environment, humidity, and other agents that can damage electrical connections and junctions. When installing a damper or outlet in the box, a cover adapter called an overcap is used. Wall switches must have ground screws if they are installed in this kind of box.
What are junction boxes for electrical installations and their uses?
