Lineworkers face no shortage of hazards during the course of a day, but switching is among those that give me the most pause. Opening and closing circuits, tying circuits together, breaking loads, transferring loads, tying or breaking substations – if any of these procedures go wrong, the results can be catastrophic. And while it always pays to heighten your awareness while switching, it is especially important to do so during the summer. Air conditioners, pool pumps, fans and other appliances add load in hot weather that can make any switching operation more precarious. In addition, the heat itself can cause the equipment to become overloaded. Regardless of the loads involved, there are safety precautions that should be taken every time you are switching. If you follow these basic ideas, the process becomes much less likely to go awry.