In this video we will answer Question 5 from the April 2022 Level 3 Written Answer Exam. The question is: Determine the neutral current within a three-phase circuit where the current for each
phase is L1 = 80 A, L2 = 60 A and L3 = 40 A. Watch the video to find out the answer using the mathematical method used in the marking criteria.

00:00 Introduction and Thanks to Supporters
01:11 The Question
02:00 The Formula
04:38 Exam Hack
06:43 How to Enter the Formula into a Calculator
07:45 Mobile Phone Warning
08:44 Weird Initial Answer
09:04 How to Switch to an Answer You Can Write Down
09:42 Marking Criteria Advice

All the information in this question, both the Exam and the Answer Sheet is readily available on the City and Guilds Website so no answers are being given away, just past answers being explained.

These videos are aimed at learners studying electricity on any course and will help those studying the City and Guilds 2365, 5357 Apprenticeship, 7202 and 8202 courses, the EAL Diploma in Electrical Installation and also any course involving electrical science, physics and maths.

Further help and practice questions:

https://www.efixx.co.uk/apprentice-hub

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