The most dangerous mistake when choosing the rating of a circuit breaker is its excess from the required. The choice of circuit breaker should be based on the cross-section of the cable that it protects. The circuit breaker device has three releases - a mechanical, electromagnetic release and a thermal release. You can disconnect the first at any moment of danger. And both others are switched off automatically and have their own characteristics of the operation of the circuit breaker. A seemingly innocuous excess of the circuit breaker rating can cause a short circuit in the wiring and cause a fire. How to calculate the circuit breaker and how to choose a circuit breaker according to the cross-section of the wire and the load is described in this video.
01:53 Calculate the circuit breaker.
02:43 Electromagnetic release.
04:46 Thermal release.
07:00 What can happen if you exceed the required rating of the circuit breaker.
08:09 Copper and aluminum cable - load comparison.
08:58 Replacement of the circuit breaker.
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The magazine "How to do it yourself" tells about various useful tips that will be useful to every person in his life, regardless of gender and age. We’ll try to tell simply about how best to make a product, how to make your choice, or how best to do in a given situation. All suggested tips are tested on their own experience.
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