Uploaded September 2021 | Updated September 2026, 2 weeks ago

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Some of the considerations when installing an electrical installation with a TT supply.

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00:00 Introduction
01:00 What is a TT system
05:33 Historical devices for fault protection
07:44 Modern devices for fault protection
10:38 Dual RCD consumer units
12:07 Modern installations
13:00 Submains
14:48 Summary
16:23 Earth Electrodes
19:36 RCD & Electrode Resistance
22:22 RCBOs Switched Neutral
24:06 Maximum leakage current
28:17 Conclusion