What should be used to secure an upper floor circuit extension?

Using wire staples to secure an upper floor circuit extension is appropriate because they are specifically designed for this purpose. Wire staples effectively secure electrical wiring in place, ensuring that it is held tightly against the structure and reducing the risk of interference or accidental damage. They provide stability and are suitable for various building materials, which is vital for maintaining safety and compliance with electrical codes.

Twine and zip ties, while capable of temporarily holding wire in place, do not provide the same level of permanency and security as wire staples. Electrical tape is intended for insulation and protection of electrical connections, not for securing wires to a surface. This means it doesn't serve the same function as wire staples and is not a reliable method for installation. Therefore, the use of wire staples is the best choice for properly securing an upper floor circuit extension.