AM2S - Section B: Live Testing: Ipf Testing at Distribution

In this practical electrical testing tutorial, you'll learn how to correctly carry out Prospective Fault Current (PFC/IPF) testing on a three-phase distribution board, including both Prospective Earth Fault Current (PEFC) and Prospective Short Circuit Current (PSCC) measurements. The video explains the purpose of prospective fault current testing, why it is an essential part of initial verification, and how to obtain accurate results using a multifunction installation tester. The demonstration follows the correct inspection and testing procedures expected during electrical training, AM2 assessments, End Point Assessments (EPA), and real-world inspection work. Throughout the tutorial you'll learn: ⚡ The difference between PEFC (Prospective Earth Fault Current) and PSCC (Prospective Short Circuit Current). Why both values must be tested on all three phases. The importance of reconnecting the main earthing conductor before carrying out PFC testing. Why previous earth loop impedance (ZDB/Ze) measurements cannot simply be used as the final fault current value. How multifunction testers calculate fault current using voltage and resistance rather than measuring the current directly. How parallel earth paths affect prospective earth fault current readings. Performing three-lead PEFC testing safely on RCBO/RCD protected installations. Carrying out line-to-neutral PSCC testing. Why some installation testers automatically switch testing modes. Understanding why test results can vary slightly and when it is appropriate to repeat a test. How to identify the highest prospective fault current value. The rule of thumb for estimating three-phase prospective short circuit current by doubling the highest line-to-neutral result. Converting fault current readings from amps (A) to kiloamps (kA) for completion of electrical certification. Recording the correct values on inspection and testing paperwork. This video also discusses why prospective fault current values vary between installations, how supply characteristics influence readings, and the importance of ensuring protective devices have adequate breaking capacity for the maximum prospective fault current available. Whether you're an electrical apprentice, practising electrician, or preparing for your Level 3 Inspection & Testing qualification, AM2, or EPA, this tutorial provides a clear step-by-step explanation of one of the most important live electrical tests carried out during initial verification. If you found this video helpful, don't forget to Like, Subscribe, and turn on notifications for more electrical installation and inspection & testing tutorials. #Electrical #Electrician #InspectionAndTesting #PFC #IPF #PEFC #PSCC #FaultCurrent #ThreePhase #ElectricalTraining #ElectricalInstallation #AM2 #EPA #CityAndGuilds #2391 #InitialVerification #DistributionBoard #Megger #ElectricalTesting #ElectricianLife