To view this video, 18th EDITION – SESSION 5 – VOLTAGE DROP CALCULATIONS, click on the link below https://www.youtube.com/watch?v=Z-kw680SIoo To view all our videos, click on the following link https://www.youtube.com/channel/UCYaJQnpO4XAp0yCgqzMkmfA As many of us know, understanding an equation is half the battle in performing the correct calculation and reaching the right answer. The 18th Edition…

To view this video, Zs and the 80% RULE, click on the link below https://www.youtube.com/watch?v=ihD-NO-7G5Y To view all our videos, click on the following link https://www.youtube.com/channel/UCYaJQnpO4XAp0yCgqzMkmfA Every electrical installation should be inspected and tested before being put into service. When it comes to testing the circuits there are so many tables of numbers and options…

To view this video, 18th EDITION – SESSION 4 – ADIABATIC EQUATIONS, click on the link below https://www.youtube.com/watch?v=173C7yE-xbU To view all our videos, click on the following link https://www.youtube.com/channel/UCYaJQnpO4XAp0yCgqzMkmfA Adiabatic Equations are an essential part of confirming safety in an electrical installation. During an earth fault there will be massive fault currents flowing, several hundred…

To view this video, DIVERSITY and MAXIMUM DEMAND, click on the link below https://www.youtube.com/watch?v=TV2IZtmydm4 To view all our videos, click on the following link https://www.youtube.com/channel/UCYaJQnpO4XAp0yCgqzMkmfA Being able to calculate and understand the difference between diversity and maximum demand is an important skill for all electricians. It will avoid overloading the main fuse, with all its…

To view this video, 18th EDITION – SESSION 3 – Zs TABLES, click on the link below https://www.youtube.com/watch?v=HbWhzt4r644 To view all our videos, click on the following link https://www.youtube.com/channel/UCYaJQnpO4XAp0yCgqzMkmfA This video is the third in our help series on the 18th Edition of the Wiring Regulations. Whether you are studying for the exam or just…

To view this video, 2 WAY LIGHTING, click on the link below https://www.youtube.com/watch?v=I00WNerWJBo To view all our videos, click on the following link https://www.youtube.com/channel/UCYaJQnpO4XAp0yCgqzMkmfA A 2 way lighting circuit is to be found in almost every domestic dwelling, factory or commercial premises. They are incredibly easy to wire up, but they do however cause some…

To view this video, 18TH EDITION SESSION 2 – PARTS and CHAPTERS, click on the link below https://www.youtube.com/watch?v=2wr1JP5l0PU To view all our videos, click on the following link https://www.youtube.com/channel/UCYaJQnpO4XAp0yCgqzMkmfA This is the second part to our series of videos on the 18th Edition of the Wiring Regulations BS7671. Not only is this video useful for…

To view this video, CABLES LENGTH CALCULATIONS and R1+R2, click on the link below https://www.youtube.com/watch?v=Qq_9MNH8XxU To view all our videos, click on the following link https://www.youtube.com/channel/UCYaJQnpO4XAp0yCgqzMkmfA An important skill for any electrician is to be able to calculate cable resistances for given cable lengths and to able to determine the R1+R2 values for the different…

To view this video, 18th EDITION – Session 1 , click on the link below https://www.youtube.com/watch?v=3sp-NByk0Q8 To view all our videos, click on the following link https://www.youtube.com/channel/UCYaJQnpO4XAp0yCgqzMkmfA Are you studying for the BS7671 Wiring Regulations 18th Edition exam? Or are you just looking to update your knowledge and skill in using the Regulations book? Whatever…

To view this video, CABLE TESTING … CONTINUITY and INSULATION RESISTANCE TESTS, click on the link below https://www.youtube.com/watch?v=tT3eGK1b0Yk To view all our videos, click on the following link https://www.youtube.com/channel/UCYaJQnpO4XAp0yCgqzMkmfA When assessing electricians we have sometimes found areas of knowledge that were not fully understood or appreciated. Why do we test both continuity of conductors and…