What is the maximum current that an 8 AWG,75°C a thermoplastic insulated conductor can safely carry for 1 second?
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What is the maximum current that an 8 AWG,75°C a thermoplastic insulated conductor can safely carry for 1 second?
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- A cylindrical 00 AWG copper wire is coated with NEMA class B insulation. The normal operating temperature of the wire is 40°C. What is the maximum current the wire can carry for 1 second without exceeding the NEMA temperature rating?Pls, answer no.1 and 2 (show the complete solution and round off final answers to 4th decimal) (write properly pls)Name two types of conductor insulation designed to be used underground, and two other types of insulators we can use it in free air.
- A copper conductor has a diameter of 0.6 in and it is 1200 ft long. Assume that it carries a total dc current of 50 A. Find the total resistance of the conductor and the current density. The resistivity of copper is 1.72 x 10-8 2-m.A 10 AWG copper conductor with type THW insulation is to be run in free air. What is the maximum ampacity of this conductor if the ambient temperature is 40 degrees CelsiusQuestion 3 a. Some materials exhibit the property of superconductivity under certain conditions. State what is meant by superconductivity and explain the required conditions for the material to become superconducting. b. The diagram below shows the cross-section of a cable consisting of parallel filaments that can be made superconducting, embedded in a cylinder of copper. copper cylinder filament The cross-sectional area of the copper in the cable is 2.28 x 10-7 m². The resistance of the copper in a 1.0 m length of the cable is 0.075 N. Calculate the resistivity of the copper, stating an appropriate unit. State and explain the what happen to the resistance of the cable when the embedded filaments of wire are made superconductive? i.
- Which factor MOST affects the ability of human skin to act as a conductor? O Temperature O Moisture O Altitude O Age Semiconductors, such as silicon, are enhanced to increase conductivity through which process? O Doping O Annealing O lonization O Electrolysis What is the MAXIMUM number of modules allowed in a string with the following "STC" module specifications and conditions? Voc: 80.8 Vmp: 62.7 Temperature coefficlent (Voc): -0.28%/C Maximum System Voltage: 600 V Record cold temperature at the site: -10°C For mounting on a sloped roof, which is an approved method of structural attachment where trusses or rafters are not conveniently located? Use lag bolts secured to the plywood sheathing. Use roofing cement between structure pads and roof. Add blocking between the trusses. Increase the span between attachment points. 10) What is the MOST important factor when determining the maximum fuse size allowed on a PV source circuit? O Length of the wire to the combiner box O Ampacity of the…The diameter of a given bare conductor is 0.50 inches. Thermoplastic insulation with a thickness of 0.1 inches is wrapped around to insulate the conductor. Determine the insulation resistance of this conductor per meter. Assume specific resistance of thermoplastic insulation to be 2 x 10^14 ohm-cm.1. What should be the minimum cross-sectional area of each conductor in a two-core cable 100 m long to limit the total voltage drop to 4% of the declared voltage of 250V when the conductors carry 60A ? The resistivity of the conductor is 2·845 µΩ cm. ANS IS [0·34 cm2]
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