Minato Sama
Member
- Location
- Phnom Penh, Cambodia
I have met the problem in my work place! I have one DB with MCCB 60A 25KA with RCCB 63A 0.3mA Supplies to two line. line A have MCB 40A 25KA with RCCB 40A 30mA For Lighting circuit, and line B have MCB 40A 25KA with RCCB 40A 30mA For Power circuit. The Problem is the surface of the lighting MCB and RCCB temperature is higher around 55 drgree C and the Cable surface temperature is 60 degree C. First we thinking about the cable is small, so we change from 16mmsq to 25 mmsq already. the cable is over capacity already, but still cannot solve the problem. then we change the MCB and RCCB for this line. But this way still cannot be solve the problem. The temperature still high. This three phase when we measure are 23A, 22A, and 20A only, but the N cable is 52A. I wonder why this N cable have 52A, and why my MCB and RCCB temperature is high? So what Should I solve do to solve this problem? Please kine to help me. (^_^)