These are Signal Cable Gland 1 and Signal Cable Gland 2, used for communication wiring to energy storage inverters, EV chargers, CT sensor clamps, heat pumps, routers, etc.
Notes:
1. (Optional) Signal cable: Outdoor 2-core shielded cable with conductor cross-sectional area 0.5–1mm². Strip insulation to expose the blue and brown signal wires.
2. (Standard) RJ45 Ethernet cable: Cat 5 outdoor 8-core shielded twisted-pair cable.