Using ferrules in consumer unit wiring is essential for ensuring safe and reliable electrical connections. Here’s why: 1. Prevents Stranded Wire Fraying • Stranded wires can spread out when inserted into terminals, leading to weak connections. • Ferrules keep the strands compact, ensuring a secure and firm grip inside the terminal. 2. Enhances Connection Stability • When tightened in screw terminals, bare stranded wires can deform over time. • Ferrules prevent loosening, reducing the risk of arc