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The Importance of Oil Resistant Cables |
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NEC Interpretation As a customer courtesy, when requested, we at Lapp Group will at times provide our opinions regarding interpretation of NEC articles. It is very important to remember that these are our opinions only; as a manufacturer of wire and cable we are not a "jurisdictional authority". Opinions expressed by Lapp concerning NEC article interpretations are never to be construed as a "guide" or "advice" depicting specific approved installation wiring methods and cable requirements. Only the Authority Having Jurisdiction (AHJ) can provide the final determination and approve equipment, materials, an installation or wiring procedure that will comply with NEC requirements. An interpretation of NEC code regulations by the AHJ is the only decision maker regarding any electrical installation in the US; however be advised that AHJ decisions can vary between the individual states and local municipalities. Before any installation, we recommend and highly advise to contact the AHJ in your area regarding any questions concerning specific NEC installation requirements or approved wiring methods before committing to any cable purchase. Definitions Industrial Machine - A power driven machine (or a group of machines working together in a coordinated manner), not portable by hand while working, that is used to process material by cutting, forming, pressure, electrical, thermal, or optical techniques, lamination, or a combination of these processes. It can include associated equipment used to transfer material or tooling, including fixtures, to assemble/disassemble, to inspect or test, or to package. Machine Tool Wire - Thermoplastic wire or cable for use as specified in the National Electrical Code (NFPA 70) and in the National Fire Protection Association Electrical Standard for Industrial Machinery (NFPA 79). NFPA 70 - The National Electrical Code (NEC) is a standard, which covers the installation of electrical conductors, equipment, and raceways; signaling and communication conductors, equipment, and raceways; and optical fiber cables and raceways for residential premises, commercial buildings, and industrial facilities. This code is not intended as a design specification or an instruction manual for untrained persons. NFPA 79 - The Electrical Standard for Industrial Machinery, a standard, which provides detailed information for the application of electrical/electronic equipment, apparatus, or systems supplied as part of industrial machines that will promote safety to life and property. The provisions of this standard apply to the electrical/electronic equipment, apparatus, or systems of industrial machines operating from a nominal voltage of 600 volts less, and commencing from the point of connection of the supply to the electrical equipment of the machine. Oil Res I Test - UL test which determines oil resistance of wire and cable under test conditions of complete immersion in IRM 902 oil for a period of 4 days at a temperature of 100ºC. Requires 50% retention of the original values obtained for tensile and elongation, this test is a requirement for any wires or cables that are manufactured to UL 1063. Oil Res II Test - UL test which determines oil resistance of wire and cable under test conditions of complete immersion in IRM 902 oil for a period of 60 days at a temperature of 75ºC. Requires 65% retention of the original values obtained for tensile and elongation, this test is an optional requirement for any wires or cables that are manufactured to UL 1063, but is required now as a standard oil test for the Wind Turbine Industry. |
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© 2012 Lapp Group |
Lapp Group is not affiliated with Lapp
Insulator.
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