Ok - the live part comes with training and confidence, it was an option and only an option if your were comfortable doing it, with regards to pressure from the customer, be careful you don't lose your ability to correctly judge the situe' and act accordingly, it is good when we can resolve the situe' asap to the customers satisfaction but in reality it is what is is and you have to make the calls here not the customer, like I said in my previous post, I think calling out the DNO was correct but think on this occasion you didn't need to pull the fuse yourself, it is my own personal opinion and others may disagree but that is what the forum is here for, to get other opinions... if your ever in this situe again then hopefully your actions will be based on this experience and a reflection on the views given in this thread, just be careful you don't get the DNO filing a court case because you made a hasty decision because the customer was flapping his wings about needing power immediately, had your customer had regular electrical inspections I could bet this would have been picked up and addressed at a more convenient time to him/her.. so in reflection it could have been avoided although it is sometimes hard to call although it probably was a loose connection that had been burning out over a long duration.