Even a small leakage current can be dangerous as it may cause electric shock or fire, so devices like Earth Leakage Circuit Breakers (ELCB) or Residual Current Devices (RCD) are used to detect this leakage and quickly cut off the power supply to protect people and equipment. Earth leakage current is the small amount of electric current that accidentally flows from a live wire to the earth or ground instead of going through the neutral or normal circuit path. So what's the problem? On circuits protected by GFCIs (Ground Fault Current Interrupters), leakage. Septic system D box installation, specifications, inspection, diagnosis, and repair: in this article series about septic system drop boxes we describe the best procedures for locating and inspecting, repairing or replacing the septic drainfield distribution box, or the "D-box" or "Splitter box". If. Septic tank distribution boxes play a crucial role in the functionality of a septic system. They serve as the intermediary between the septic tank and the drain field, ensuring that effluent is evenly distributed across the leach lines. Once the leakage source is found, repair or replace the faulty wiring or.