Knowing which outlets share a circuit, and which breakers (or fuses) protect each circuit in your building can save money by reducing the quotes of electricians, who know that a mapped electrical system costs less to repair or upgrade than a mysterious web of unlabeled circuits. For further savings, balanced loads based on what you discover through mapping can avoid overloads on individual circuits and save costly shut-downs (lost data or business downtime) or the expense of installing new circuits where properly-balanced old ones will do.
Following are some tips for speeding the process of mapping your electrical system, and ensuring that your results are accurate.
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