Review Refer to the National Electrical Code or the working drawings when necessary. Where applicable, responses should be written in complete sentences. 1. Why must overcurrent protection be provided? Several factors should be understood when selecting overcurrent protective devices. In your own words, define each of the following as they apply to overcurrent devices. 2. Voltage rating: 3. Continuous current rating: 4. Interrupting rating: 5. Speed of response: 6. Current limitation: 7. Peak let-through