I came across this junction box under a bedroom floor. Even me as an electrician found it difficult to find this junction box let alone get access to it!
This junction box is the main junction box for the downstairs lighting. This is classed as ‘the junction box method ‘. The junction box method is the old way of wiring lighting. Basically you take a lighting cable from the fuse box / consumer unit and take it to the junction box then you take one cable from the junction box to each light on that floor level. The new, and I think the best way of wiring lighting in a property is three plating ‘The three plate method ‘. This means basically you take a cable from the fuse box / consumer unit to the first light on that floor level and then link that to the next light and so on.
So, the moral of this blog is that if you wire lighting in the new three plate method then access to every cable connection is easily accessible. For not only if any fault occurs, but for inspection and testing of the lighting circuit.
