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Month: January 2021

RING CIRCUIT TESTING

Posted on January 28, 2021

The Wiring Regulations inform us that every installation should be inspected and tested during erection and on completion before being put into service, to verify that the requirements of BS7671 have been met. In other words, we should always inspect and test our work before handing it back to the customer. We will focus here…

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ADIABATIC EQUATION

Posted on January 19, 2021

We are often asked what is an adiabatic formula or equation and indeed what does adiabatic actually mean in relation to electrical installation work. We know it is to do with selecting the correct size earth conductor but how do we use it? And why do we even bother? If we look in the Wiring…

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Recent Posts

  • VIDEO 193 – ELECTRICAL CERTIFICATES – WHAT FORMS DO I NEED TO COMPLETE? – 18th EDITION AMENDMENT 2 – BS7671
  • VIDEO 192 – OHM’S LAW AND THE POWER MATRIX – HOW TO COMBINE FORMULAS – HOW TO MAKE CALCULATIONS – EASY TO USE
  • VIDEO 191 – ADD A LIGHT TO A ROOM – PARALLEL LIGHTING – WHAT CONNECTIONS TO MAKE AND THE CHANGES TO BE MADE
  • VIDEO 190 – Zdb – WHAT IS IT? – WHY DO WE HAVE Ze? – WHY USE Zs? – TESTING Zdb AND RECORDING THE RESULTS ON TEST CERTIFICATES
  • P192 – OHM’S LAW AND THE POWER MATRIX – PRINTABLE PDF

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