Because working with electrical wires can be risky, an electrician needs to be qualified and experienced. All household electrical work must be certified, unless it is done in the garage or another specific exterior section of the house (that is, a space that may be connected for power and lighting but isn't a part of the designated living area of the house). So in a manner, having the appropriate certification and the training to support it is the first and most crucial instrument of all for dealing with electrics.
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