How to find incorrect supply polarity with an approved voltage indicator. The first live test in BS 7671 is recheck supply polarity it is so important and in this video Marcus demonstrates how to prove supply polarity of a single phase 230 volt AC supply in a domestic dwelling. Using a proving unit and a voltage indicator we show step by step how to carry out proving polarity of the supply test.
🔵 First Live Test AM2 & AM2S - Check Polarity of 3 Phase Supply, Using an Approved Voltage Indicator https://youtu.be/3kHlWHM9Wm8
== 🕐 Time Stamps - Cut to the action 🕕 ==
00:00 - Fault finding on the supply cable
00:18 - First live test re-check polarity of supply
00:37 - Issues at the socket?
01:22 - Supply is isolated
01:57 - Visual inspection
03:07 - Check your approved voltage indicator
03:36 - Starting the test L/E N/E L/N
05:16 - Recheck your approved voltage indicator
05:26 - 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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