Junction boxes are sometimes required when extending or modifying a circuit in some way or other. Traditional junction boxes very often look like this:



These junction boxes have screw terminals within which can come loose over a period of time leading to problems (see previous post). Screw terminal junction boxes should only be installed where they are readily accessible however, this historically has not been the case. Many of these are found under floors which have had laminate flooring put down over the top of, or glued down carpets or other floor coverings. This then makes then inaccessible and prone to failure due to a lack of maintaining.

Newer options include Wago terminals which use spring clips to hold the cores of the cables in place and are deemed to be maintenance free. These terminals are then put into an enclosure as a more compliant solution to the old style junction boxes.

See below.