Solid vs Stranded Copper Wire

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Miguelpak
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Solid vs Stranded Copper Wire

Сообщение Miguelpak » 27 май 2023, 22:50

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There are federal guidelines and standards concerning copper. The Environmental Protection Agency (EPA) has established regulations and limits for copper in drinking water under the Safe Drinking Water Act (SDWA). The Maximum Contaminant Level (MCL) for copper in drinking water is 1.3 milligrams per liter (mg/L) or 1300 parts per billion (ppb). The EPA has also set guidelines for copper in other areas, such as air quality. The National Ambient Air Quality Standards (NAAQS) define the acceptable levels of copper in outdoor air. The primary standard is 0.0001 milligrams per cubic meter (mg/m3) or 100 parts per billion (ppb) over a one-hour period. The secondary standard is 0.002 mg/m3 or 2000 ppb over a 24-hour period. Additionally, the Occupational Safety and Health Administration (OSHA) has established permissible exposure limits (PELs) for copper in the workplace. The PEL for copper dust and fumes is 1 mg/m3 for an 8-hour workday, while the PEL for copper oxide fume is 0.2 mg/m3 for an 8-hour workday. The National Institute for Occupational Safety and Health (NIOSH) has also set recommended exposure limits (RELs) for copper. The REL for copper dust and fumes is 1 mg/m3 for an 8-hour workday, while the REL for copper oxide fume is 0.2 mg/m3 for an 8-hour workday. In summary, federal guidelines and standards on copper are in place to protect public health and the environment. These regulations and limits help ensure the safe use and handling of copper in various industries and applications copper scrap dealers copper scrap collection


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Copper wire can conduct electricity efficiently and safely, but it is not suitable to use as a fuse wire because of its low melting point. A fuse wire is designed to break and disconnect the circuit in case of an overcurrent or short circuit, which can damage devices, cause electrical fires, or pose a risk to people's safety. When too much current passes through a fuse wire, it heats up and melts, interrupting the flow of electricity. The fuse wire must be able to handle the normal electrical load without melting, but it should melt quickly if an abnormal current surge occurs. Copper wire has a melting point of 1085В°C, which is too high for most applications. In contrast, a typical fuse wire made of materials like tin, lead, or alloys has a melting point between 100В°C and 250В°C, depending on the current rating and environment. Using a copper wire as a fuse wire could cause several problems. Firstly, it may not break quickly enough to protect the circuit, device, or user from the effects of a fault. Secondly, it may not produce a visible indication that the fuse has blown, making it difficult to identify and troubleshoot the fault. Thirdly, it may potentially cause a fire if the copper wire becomes heated to its melting point. Therefore, it is critical to use appropriate fuse wire material that is safety-approved, correctly rated, and installed correctly according to standards and regulations to ensure reliable protection and prevent electrical hazards
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