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Globally, สายไฟ (Wires , Cordes , สายไฟ ) is a rare mostly masculine, but seldom female forename. The given name สายไฟ is habitual in Brazil, where it is a very rare dominantly male, but infrequently female name, the United States, and Nigeria, where it is an extremely rare gender-neutral name. Much more prevalently, สายไฟ is the last name as well as the forename.