No, tinned copper should not be used with aluminium wire for pigtails using regular wire nuts.Tinned copper and aluminium are two different metals, and they cannot be joined directly using regular wire nuts. This is because the dissimilar metals create a galvanic reaction, which can result in corrosion and failure of the connection.To join tinned copper and aluminium wire, a special type of wire nut called a "split bolt" or "compression connector" must be used. These connectors are designed to prevent galvanic corrosion and ensure a secure connection between the two different metals. Flag for review