1. For the junction box with double outlet, the unused outlet should be blocked with a metal sealing sheet with a thickness of not less than 2mm. Tighten the nut evenly to compress the sealing ring to achieve reliable sealing.

2. After the junction box is installed, check the electrical clearance and creepage distance: 380/660V small electrical clearance is 10mm, and the creepage distance is as small as 18mm. 1140V small electrical clearance is 18mm, and the creepage distance is as small as 30mm.

3. The inlet of the junction box is sealed by pressing the rubber ring. The weakness of this structure is the aging of the rubber ring and the failure of its elasticity, which makes the cable and the rubber ring inconsistent.

Other Product