In order to provide power to rural areas it is often necessary to run power lines through woods and forests. In order to do this a passage must first be cleared to allow the line to be built. But there is an additional danger if the surrounding trees are not kept clear of the lines. I was first made aware of this problem when out walking. I spotted a vehicle belonging to a tree service near me parked in a wooded area near the power lines. It made me wonder what it was doing in such a rural area. Although wood is a poor conductor of electricity, branches can still cause problems for power lines if they are allowed to grow near them: strong winds may cause the branches to repeatedly hit the lines and damage them, or the lines may be damaged simply by a bough moving them as it grows. This is why the trees surrounding the lines must be regularly cut back by qualified professionals. This work is obviously not without danger. In addition to the perils of regular tree surgery, working around power lines carries the risk of electrocution. If the work is not done carefully branches may fall into the lines, not only causing damage, but creating extra danger. Usually the power lines will be turned off while the work is being carried out to reduce the risk. It is not just very wooded areas that require this kind of work. Trees in residential areas must also be kept clear of the lines. With the additional lines and habitation in these areas it is arguably more important that trees here a maintained. Local authorities usually carry out extensive management programs, but if you have a tree which is growing close to a power line you can arrange for it to be cut back by contacting a local tree service.