HOLT Electricians Practice Exam

To prevent transmission of tension to joints or terminal screws, how should flexible cords be connected?

1. By using longer cords

2. By knotting the cord, winding with tape, or using designed fittings

3. By using screws only

4. By tying directly to devices

The correct answer is: By knotting the cord, winding with tape, or using designed fittings

The correct approach to connecting flexible cords in order to prevent the transmission of tension to joints or terminal screws is by utilizing methods such as knotting the cord, winding it with tape, or employing specifically designed fittings. This method effectively reduces strain on the connections by absorbing tension and distributing it more evenly across the cord. Flexible cords are designed to be durable and provide a certain level of flexibility; however, if they are connected too rigidly or directly to terminal screws, the tension during use can lead to damage or disconnection. By incorporating techniques like knotting or using purpose-built fittings, the cord can flex without placing undue pressure on the points of connection. This is significant in maintaining the integrity of the wiring and ensuring the safety of the electrical system. Using longer cords, relying solely on screws, or tying directly to devices would not effectively mitigate tension issues. Longer cords could result in more slack, which might cause tangling or increased stress at awkward points. Connecting with screws alone does not account for the flexibility needed, while directly tying to devices can create points of weakness that are prone to failure. Thus, the recommended techniques promote reliability and safety in electrical installations.