IP68 Waterproof Junction Box: 4M/2H Lab-Tested — How We Verify the Rating Most Suppliers Just Print
Most junction boxes claim IP68 with nothing to back it up. This guide shows exactly how we test ours — 4 metres depth, 2 hours submerged — then walks through IP65 vs IP67 vs IP68 selection, the 5 reasons boxes fail in the field, sizing by way-count, and the sourcing mistakes that cost buyers real money.