Final answer:
A deduct meter is used to measure electrical energy consumption in a specific device or circuit. Before installing one, you should understand wiring requirements, have knowledge of electrical circuits, and choose a compatible meter.
Step-by-step explanation:
A deduct meter is useful in situations where you want to measure the amount of electrical energy that is consumed by a specific device or circuit. It allows you to track and monitor electricity usage, which can be helpful for energy management and cost allocation purposes.
Before installing a deduct meter, there are a few things you should know. First, you need to understand the wiring requirements and regulations specific to your region or country. Second, you should have a basic understanding of electrical circuits and how to safely install and connect the meter. Lastly, you should ensure that the meter you choose is compatible with the electrical load you want to measure.