Minimum reference table for electric showers safety and efficiency requirements NBR 5410.

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Hidraulétrica Elétrica Hidráulica

Published on Jun 16, 2020
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Invitation to join the learning group, click on the link below 👇 https://whatsapp.com/channel/0029Vax7... https://whatsapp.com/channel/0029Vax7... @Hidraullétrica-BH #hidrauletrica @EletrometriaEletronic This table helps to ensure that the shower installation is safe and efficient1. It is important to remember that these are only references and the manufacturer's specifications should always be followed when installing an electric shower1. The minimum reference table for electric showers with rigid cable and circuit breakers is used to determine the appropriate circuit breaker and cable gauge for a specific electric shower, based on its power and voltage1. Tolerance for more or less in some requirements is a common practice in engineering and manufacturing. This is because it is almost impossible to manufacture anything with absolute precision due to various causes, such as inaccuracies in machines, devices or measuring instruments2. Therefore, the actual dimensions of the parts may differ from those indicated in the drawing, called nominal dimensions2. In the case of electric showers, tolerance may be due to variations in the shower's power or the mains voltage. For example, a shower may have a nominal power of 4500 W, but the actual power may vary slightly up or down. Similarly, the mains voltage may vary slightly throughout the day. These variations may affect the shower's performance and, therefore, the circuit breaker and cable gauge required. In addition, technical standards, such as NBR 5410 in Brazil, also establish tolerances to ensure the safety and efficiency of electrical installations32. These tolerances are based on a careful analysis of the risks and benefits associated with different levels of precision.

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