Skip to content
Menu
Learn Electrics
  • ABOUT US
  • PRIVACY POLICY
Learn Electrics

VIDEO 035 – Zs WHERE DO THE NUMBERS COME FROM

Posted on October 7, 2021

To view this video, Zs WHERE DO THE NUMBERS COME FROM, click on the link below

https://www.youtube.com/watch?v=IjpJK1eJLzw

To view all our videos, click on the following link

https://www.youtube.com/channel/UCYaJQnpO4XAp0yCgqzMkmfA

Many electricians will have experienced, in their early days, a moment of panic when they have been presented with too much information.

Too many tables to look through, all the tables giving different information and generally making it difficult to be certain that the information you have is the correct one for you, for the circuit that is in front of you.

In this short video we will take Zs, the system loop impedance and go back to basics to discover just which tables in the Wiring Regulations and the On-site guide that the information comes from; and then look at how it is calculated.

How do they allow for temperature and voltage fluctuations in the circuit, because they both affect the values of the circuit.

What is a tabulated value and why is it different to a measured value and which one should you use.

The answers will be here.

To view this video, Zs WHERE DO THE NUMBERS COME FROM, click on the link below

https://www.youtube.com/watch?v=IjpJK1eJLzw

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Recent Posts

  • VIDEO 147 – TABLE OF TABLES – 18th EDITION – AMENDMENT 2 – FINDING THE ANSWER
  • VIDEO 146 NEW REGULATIONS – NEW QUESTIONS – 18TH EDITION – AMENDMENT 2 – FINDING THE ANSWER
  • VIDEO 145 – Zs TABLES – 18th EDITION EXAM – AMENDMENT 2 – ANSWERING THE QUESTION
  • VIDEO 144 – 18TH EDITION EXAM QUESTIONS – AMENDMENT 2 – FINDING THE ANSWER
  • VIDEO 143 – RING CIRCUIT CALCULATIONS – TESTING METHODS – SOME PROBLEMS – THE RIGHT NUMBERS AND THE WRONG ONES

Recent Comments

    Archives

    • June 2022
    • May 2022
    • April 2022
    • March 2022
    • February 2022
    • January 2022
    • December 2021
    • November 2021
    • October 2021
    • September 2021
    • June 2021
    • March 2021
    • February 2021
    • January 2021

    Categories

    • Uncategorized
    ©2022 Learn Electrics | WordPress Theme: EcoCoded