Final answer:
While the question inquires about the Canadian Electrical Code regarding a disconnect box, the additional information provided is unrelated to the question and revolves around electrical forces and measurements in physics. Correctly, the maximum distance for disconnect box installation can vary based on local electrical code regulations.
Step-by-step explanation:
The question refers to the Canadian Electrical Code and the installation of a disconnect box from an outside unit, such as an air conditioner. While the original question deals with regulations, the provided information pertains to electrical and physical concepts, such as forces between wires in an AC appliance cord, electric fields, and distances in space measured in light years. This suggests a mix-up in the information provided and the actual code question.
As for the Electrical Code standards, the correct answer would often be (c) Varies by local regulations. Electrical codes can differ by jurisdiction and it is essential for any electrical installation to adhere to local code requirements. Regarding the detailed questions given in the information:
- The average force per meter can be calculated using the Ampère's force law for parallel current-carrying conductors.
- The maximum force per meter would occur when the currents are at their peak values.
- The forces between the hot and neutral wires carrying AC current are attractive when currents flow in opposite directions and repulsive when they flow in the same direction.
- Appliance cords are typically robust enough to handle the forces generated by the electrical current they carry without needing special design features.