2 things wrong here firstly the box was plastered closed and secondly the one wire is a 4 mm and the other 2.5 mm if there was a 20 amp circuit breaker in the DB feeding this circuit it wouldnt be a problem... but the fact that there was a 30 amp breaker makes it a problem...it is extremely difficult to find a box plastered closed...so if you see an electrician doing this take a photo report him and record it for your own good.
Did you like this article? Share it with your favourite social network.