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The ring final circuit (ring main) is a unique British socket wiring system. More complex to test and install compared to radial circuits. In this electrical tutorial, Joe Robinson explores how the current flows in the branches of a ring circuit.
This video demonstrates why you can't use a 16A junction box on a 32A ring final circuit, a topic explored in a previous electricians' Q&A - • Can a junction box rat...
🕐 TIME STAMPS 🕕
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00:00 Ring final circuits - (yes loads of people still call them ring mains)
00:56 Ring final test rig.
02:00 Load placed in the exact mid-point.
03:35 Placing load away from the electrical mid-point.
04:50 Placing load close to the consumer unit.
05:50 Appendix 15 - BS7671
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Joe Robinson - technical editor eFIXX
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