Updating electrical wiring

If that live wire touched the metal case, the tool could be energized to 120v, and that’s not good.If this happens with a grounded tool, a short circuit is created, and the breaker trips.The approach you take will depend on your budget, your ability to access the walls, attic, and crawlspace and the level of demolition allowed.This kind of remodeling is easier to do in a newly purchased home than a well lived-in one.If any other safety hazards or wiring problems are found during the project, these will need to be repaired as well.Upgrading the panel to a higher amperage of electrical service will add to the cost of the project, and wiring an entire house will cost more than wiring just one room.Modern circuits are grounded for safety, so your concern is well-founded.

A few ground wires are connected to the cold-water supply, but I believe that they are for a 240v electrical-baseboard heater system.Homeowners are allowed to do electrical repairs on their own houses, but the work will have to be inspected.You may want to consider hiring an electrician to advise and assist you with planning and discovery, since understanding the wiring of an old structure involves a good deal of experience and knowledge.How might the metal case of a drill become energized?The insulation on a wire inside the drill could become damaged.

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