Basic rules for risk assessment(even though you'd act different in real life), absolutely no live working, any mention of the power not being able to be switch off, you simply say, job cant be done and should be arranged for when the power can be turned off. As for the rest, just go way over the top, use all correct PPE, use correct tools, corden off area being worked at, set up appropriate lighting, blah blah blah, think i explained in more detail in earlier posts, as for the mother and kid, job should be arranged when they are not there......depends how its worded, just common sense really. basically be over the top and the most safety minded guy ever. Good luck with it and read over the earlier posts i did.