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The requirement for who must sign the electrical plans for a house is predominantly focused on professional qualifications and licensing. A registered and licensed electrical engineer possesses the necessary education, training, and credentials to design and oversee electrical systems in residential projects. Their expertise ensures that the electrical plans comply with local codes, industry standards, and safety regulations.

Such engineers are responsible for the thorough assessment of electrical load calculations, circuit design, and safety measures that are essential in residential structures. This signature is not only a formality but signifies that the plans have been vetted by a professional capable of ensuring the integrity and safety of the electrical work being proposed, thereby protecting both the homeowner and the public.

The other professionals listed, while they may hold qualifications related to electrical work, do not typically have the same level of endorsement as an electrical engineer in terms of having legal authority over electrical system designs. For instance, a master electrician or an electrician may be involved in the implementation of electrical work but generally do not possess the same level of responsibility for the design documents. A civil engineer, although highly skilled in construction-related fields, focuses primarily on structural and civil aspects rather than specialized electrical systems.