Como dimensionar cabos elétricos residenciais!

SUBSCRIBE TO THE WORLD OF ELECTRICITY 🢂 ​​https://eletri.ca/ASSINAR-O-CANAL Knowing how to size and choose cables and wires for an electrical installation is part of the mandatory knowledge for building electricians. Choosing the correct electrical cable depends on well-defined standards and calculations. Cables for showers, grounding, outlets, lighting, and motors have sizing standards with variations and important details. Knowing how to calculate how many amperes a cable should support can help in sizing through the use of tables provided by manufacturers. The correct sizing of circuit breakers in each phase, circuit, and overall is also related to the sizing of the conductors. The Prysmian Club app can be downloaded from the following links: Android - http://bit.ly/29wtPV8, iOS - http://apple.co/1PgggEw, Windows (NEW) - http://bit.ly/2b8zjW1 Among the objectives of this video, we highlight: Presenting the sizing method and tables of NBR5410. Presenting Prysmian's supporting material on electrical cables. We address the following items throughout this video: The NBR-5410 standard stipulates some criteria that must be taken into consideration when sizing an electrical conductor. One of the main points is knowing the cable installation method; in the case of residential installations, most of the installation is in conduits embedded in masonry. According to table 33 of NBR-5410, the installation method is number 7 and the reference for installation is B1. Next, find out how many cables in the circuit are loaded, according to table 46 of NBR-5410. Now, simply consult the current carrying capacity table for conductors according to the cable that will be used; for residential installations, PVC cable, in this case, table 36. Then, verify if the current found for the circuit you want to size is within the minimum cross-section criterion; it stipulates the minimum gauge of a cable according to its use in low voltage. In the Prysmian Club app, you can find reference tables as well as various other informative and technical materials about this sizing method. Highlighted parts in this video (edit notes): 00:34 - All electrical installations and their components are governed by standards, as are the cables. 01:52 - The standard stipulates standardization, as in the case of cable color; the NBR5410 standard is very specific regarding which colors are used for each function within the electrical installation. 02:35 - There are many sizing tables, avoiding the need for many calculations, such as the table for sizing electrical conduits. 03:58 - Loaded cables refer to phase and neutral cables and the types of circuits. 04:56 - There are wires and cables, and the name can be confusing, but the difference between them is quite simple. 06:45 - Voltage drop is found in long circuits; the greater the distance, the greater the voltage drop. 07:30 - Cables and loads are protected by circuit breakers. 08:56 - For sizing, it is necessary to understand the correction factors that are applied. 09:50 - Cables, when outside the correct occupancy rate, tend to heat up the circuits more, thus requiring a resizing of the cables. Participants in this video: Henrique Mattede   / henrique.mattede   Video editing: Alex Teixeira Benfica #MEL_00383 -- The World of Electricity is a channel about electricity, electrical engineering, and electronics with quality videos for you to learn on your cell phone, tablet, or TV in your living room. Electricity for everyone! Electrical control courses, online electrical classes, PDF manuals, electrical diagrams, and explanations about NR 10 and other concepts! Join the World of Electricity: On YouTube (click and subscribe): http://goo.gl/vXru8M World of Electricity Website: http://www.mundodaeletrica.com.br On Facebook:   / mundodaeletrica   On Google Plus: https://plus.google.com/+Mundodaeletr... On Twitter:   / mundodaeletrica   On LinkedIn: https://goo.gl/S8lcwp