Codebreakers # 26 – Professional Electrician


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Do you need help deciphering the EICR? The technical team at NAPIT, with the help of the 18th Edition Codebreakers, is answering your latest code-related inquiries. Click on the pictures to take a closer look! Colin Pride: I found this out in a sister-in-law’s garage – the socket used in the dryer was plugged in with flexible air! This type of monitoring is precisely the reason why electrical installations must be checked regularly, and any new installation, maintenance, or modifications performed by a professional. The supply cable here is flexible, and although it is not a problem in and of itself, as bends are used, they need to be sized and finished appropriately for their own design. Since we are unable to determine what type of device is protecting this cable, I will assume it is radial 20 amps (could be a 32A ring terminal circuit) and the flex is 1.5 mm2. It is quite possible for the flex to be 1.25mm2 or less, but it is very difficult Distinction from pictures. In all scenarios, I will assume that the size of the flexible conductor is not sufficiently protected by an overcurrent protection device (OCPD). Since the neutral conductor burned away, I suspect the terminal was loose or may not have sufficiently held the fine wire connectors of the flexible. When we terminate our multi-threaded fine wire conductors, they must either be terminated in such a way that the fine wire connectors are securely anchored or be handled appropriately. Proper handling allows the use of isolated flat blade curls or the like. The risk of escalation due to fire was high here, as the fault was only found after the dryer had stopped working, so a lucky escape. Find out how you can purchase a copy of the NAPIT Codebreakers post by clicking here


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