Ring Final Circuit Testing for Sockets Wired in 2.5 Twin and CPC Cable (Twin and Earth Cable)

Student training aid for how to carryout a continuity of a ring final circuit and polarity. Using a MFT Megger tester set to the ohms scale. This video follows the 3 stage required to prove a ring final circuit is wired correctly as well as carrying out the calculation required. The circuit is wired in 2.5mm2 twin and CPC cable (twin and earth) as it is in a domestic installation. Sometimes in industry this type of circuit is called incorrectly a ring main circuit. Things of note: finding r1, rn, r2, R1 + Rn, R1 + R2, 1.67 ohms and proving one of the sockets is a spur from the ring. After completing the test the conductors are returned to the correct torque setting with in the consumer unit. NOTE - at times during the video I state some of my reading wrong by adding anther zero on to the value. the subtitles are correct as are my calculations and my final reading recorded as R1 = R2. Hopefully you can forgive a oral slip ups. Massive thanks Gaz 🔔 Subscribe for more free electrical training videos https://youtube.com/c/GSHElectrical?sub_confirmation=1 == 🕐 Time Stamps - Cut to the action 🕕 == 00:00 - How to test a ring circuit 00:52 - Consumer unit layout 01:03 - Identifying the legs of the ring circuit 01:56 - End to end test r1, rn and r2 02:31 - The rule of 1.67 times greater 03:05 - Reading for r1, rn and r2 04:12 - Calculations for R1 + RN and R1 + R2 04:40 - Linking opposite line to opposite neutral 05:29 - Testing at every socket outlet 06:50 - Finding a high reading on the ring circuit 07:38 - Spur from the ring final circuit 08:31 - Linking opposite line to opposite CPC 09:10 - Testing at every socket outlet 10:22 - Finding and recording out highest reading in ohms 11:00 - Using a torque screwdriver for the connections in the consumer unit Understand and Carry Out Terminations and Connections of Conductors 5357 107. 🔵 How to Test a Ring Final Circuit - Ring Main or Socket Circuit - Ring Continuity & Polarity Tests https://youtu.be/UesYHVsZD-E Videos are training aids for City and Guilds (C and G) and EAL courses Level 1, 2, 3 plus AM2, AM2S and AM2E. You can follow me day by day on Facebook, Instagram, Twitter and TikTok lookout for "GSH Electrical. ▶️ FACEBOOK https://www.facebook.com/gshelectrical/ ▶️ INSTAGRAM https://instagram.com/p/BrIhZmrAYGDTmjMdb9lUNQodMevqsbDDki3qpQ0/ ▶️ TWITTER https://mobile.twitter.com/gsh_electrical ▶️ TikTok https://vm.tiktok.com/ZMRBLFdhe/ #GSHElectrical #Electricaltrainingvideos #electricaltesting