Testing a Smoke Detector Circuit In this video I demonstrate using a Megger MFT how to carryout the continuity of the cpc, polarity and insulation resistance tests for this smoke detector circuit (likewise this could be a CO detector). This circuit is wired in FP200 and MICC cable (Pyro or MI Cable) via a fuse connection unit. This circuit is similar to one in unit 107 of the City and Guild 5357. The same testing procedure will be required when testing a CO detector during AM2, AM2S and AM2E end

Breaker cable Megger Test at 5000V DC | Y Phase Fault Detected | Electrical Testing Live In this video, we are performing a VCB breaker incoming cable megger test with the megger set at 5000 DC volts. ✅ B phase insulation is good ✅ R phase insulation is normal ❌ Y phase showing 0.0 MΩ, insulation failed or shorted to earth #fblifestyle #ElectricalEngineer #SubstationWork #VCBTesting #MeggerTest #InsulationResistance #HighVoltageTesting #66kVSubstation | Er Muhammad Miyaji