In this video we look at the level of circuit protection offered by an old consumer unit with BS 3036 fuses and a 100mA RCD main switch. We then compare it with the level of protection offered by the new replacement fuse box with a type 2 SPD and 30mA type A RCBOs for each final circuit. We talk about the need for the consumer unit to be metal, circuit protection to offer selectivity and AC and DC leakage currents.

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== 🕐 Time Stamps - Cut to the action 🕕 ==

00:00 - Consumer unit upgrade
00:48 - Made of metal
01:19 - 100mA RCCB
01:47 - Time for a break
02:13 - BS3036 fuses
02:43 - Issues when rewiring the fuse
03:22 - Old consumer layout
03:33 - Plastic consumer units
04:03 - New fuse box
04:11 - Type 2 SPD
05:18 - Back EMF
06:21 - NOT a direct lightning strike
06:40 - Main switch
07:12 - Disconnects both line and neutral
07:41 - Types of MCB's
08:27 - RCBO
08:47 - Type A RCBO
09:24 - Say NO to AC RCDs
09:45 - The reason why our RCDs should be type A as a minimum
10:26 - Types of RCDs
11:38 - Why do we leave spare ways
12:35 - Natural earth leakage current explained
13:49 - 9mA
14:50 - Summary

Videos are training aids for City and Guilds (C and G) and EAL courses Level 1, 2, 3 plus AM2, AM2S and AM2E.

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