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A commercial building in downtown Portland, OR has a three-phase, 480 volt, 1200 ampere service. What...
Not yet answered Points out of 10.00 P Has question A commercial building in downtown Portland,...
Not yet answered Points out of 10.00 P Has question A commercial building in downtown Portland, OR has a three-phase, 480 volt, 1200 ampere service. What is the required transformer size needed for this building? Make sure to show your work FT: BIOWEGO Maximum size for news SOOMB mamamatachments
The amount of available fault current at the service depends upon the ______. Method of banding...
The amount of available fault current at the service depends upon the ______. Method of banding Method of grounding Size and impendence of the service transformer Ampere rating of the overcurrent protection device The line current for a 240/120 volt, 3-phrase system, if each phase is balanced with a 3,000-VA load and the total load is 9,000 VA, is ______ amperes. 12.5 15 21.65 37.5 Given: A dwelling unit has 3,000 sq.ft. of habitable space with laundry facilities and bathrooms,...
Question 3 Not yet answered Points out of 10.00 P Flag question A building has a...
Question 3 Not yet answered Points out of 10.00 P Flag question A building has a 40kW load using a 240V AC three-phase system. a) What is the total current needed for this system if the PF is 0.8? b) Based on the current calculated in part a, what size conductor is needed for this system if the feeder is to be aluminum rated for 90°C? c) If the service for this building is from underground, what type of conductor...
If a 25-kW (rated) wind turbine has a three-phase, 480-V generator, what minimum size wire will...
If a 25-kW (rated) wind turbine has a three-phase, 480-V generator, what minimum size wire will be needed for each phase to connect the wind turbine to a load that is 50 m away? Remember, you need to count the length of wire down the 25-m tower. Peak power can be 30 kW. Calculate maximum current and reduce it by a factor of 1.7 because the system is three-phase. Each leg (wire) of the three-phase system carries 1/3 of the...
A commercial building in New Orleans has the following electrical design: Lighting System (Demand Factor =...
A commercial building in New Orleans has the following electrical design: Lighting System (Demand Factor = 0.75): Indoor lighting = 2.75kW 120V single-phase; Outdoor lighting = 3.50kW 120V single-phase Heating System (Demand Factor = 0.70): Electric Furnace - 20,000 btuh 240V single-phase Convenience Power (Demand Factor = 0.45): 65 duplex outlets rated at 1.5A 120V single phase Include 15% spare circuits for future expansion The system has a diversity coefficient of 1.1 Using this information, calculate the gross connected load,...
A commercial building in New Orleans has the following electrical design: Lighting System (Demand Factor =...
A commercial building in New Orleans has the following electrical design: Lighting System (Demand Factor = 0.75): Indoor lighting = 2.75kW 120V single-phase; Outdoor lighting = 3.50kW 120V single-phase Heating System (Demand Factor = 0.70): Electric Furnace - 20,000 btuh 240V single-phase Convenience Power (Demand Factor = 0.45): 65 duplex outlets rated at 1.5A 120V single phase Include 15% spare circuits for future expansion The system has a diversity coefficient of 1.1 Using this information, calculate the gross connected load,...
A commercial building has the following electrical design Lighting System (Demand Factor=0.75). Indoor lighting - 2.5kW...
A commercial building has the following electrical design Lighting System (Demand Factor=0.75). Indoor lighting - 2.5kW 120V single phase, Outdoor lighting - 3kW 120V single-phase Heating System (Demand Factor 0,60) Electric Furnance - 17.000 btuh 240V single-phase Convenience Power (Demand Factor - 035) 50 duplex outlets rated at 1.5A 120V single phase Include 20% spare circuits for future expansion The system has a diversity coefficient of 1.1 Using this information, calculate the gross connected load, gross demand load and the...
Question 4 Not yet answered Points out of 10.00 P Flag question A commercial building has...
Question 4 Not yet answered Points out of 10.00 P Flag question A commercial building has the following electrical design: Lighting System (Demand Factor = 0.75): Indoor lighting = 2.5kW 120V single-phase; Outdoor lighting = 3kW 120V single-phase Heating System (Demand Factor = 0.60): Electric Furnance - 17,000 btuh 240V single-phase • Convenience Power (Demand Factor = 0.35): 50 duplex outlets rated at 1.5A 120V single phase • Include 20% spare circuits for future expansion • The system has a...
Problem 2: A pump station is fed by a 2000 A, 480 V three-phase electrical service....
Problem 2: A pump station is fed by a 2000 A, 480 V three-phase electrical service. The station runs two small motors, giving it a load profile of 350 kW with a 0.82 lagging PE. Determine the minimum allowed gauge of the service conductors. Feeder lines are aluminum, THW, contained within a raceway with an ambient temperature of 40 °C. State the specific article(s)/tables used to determine your answer. 13 55 The station is being expanded to include two new...
You have a sensor that has a maximum output of 25 Volt, and you want to...
You have a sensor that has a maximum output of 25 Volt, and you want to feed this signal intoa data acquisition (DAQ) board with a maximum input in the range 0, +101 Volt. Design a circuit that matches the sensor to your DAQ board with the following design criteria: a) You need to attenuate the input signal by a factor of 2.5 b) The sensor cannot provide any current; therefore you need to make sure not to cause a...
Not yet answered Points out of 10.00 P Has question A commercial building in downtown Portland, OR has a three-phase, 480 volt, 1200 ampere service. What is the required transformer size needed for this building? Make sure to show your work FT: BIOWEGO Maximum size for news SOOMB mamamatachments
Question 3 Not yet answered Points out of 10.00 P Flag question A building has a 40kW load using a 240V AC three-phase system. a) What is the total current needed for this system if the PF is 0.8? b) Based on the current calculated in part a, what size conductor is needed for this system if the feeder is to be aluminum rated for 90°C? c) If the service for this building is from underground, what type of conductor...
A commercial building has the following electrical design Lighting System (Demand Factor=0.75). Indoor lighting - 2.5kW 120V single phase, Outdoor lighting - 3kW 120V single-phase Heating System (Demand Factor 0,60) Electric Furnance - 17.000 btuh 240V single-phase Convenience Power (Demand Factor - 035) 50 duplex outlets rated at 1.5A 120V single phase Include 20% spare circuits for future expansion The system has a diversity coefficient of 1.1 Using this information, calculate the gross connected load, gross demand load and the...
Question 4 Not yet answered Points out of 10.00 P Flag question A commercial building has the following electrical design: Lighting System (Demand Factor = 0.75): Indoor lighting = 2.5kW 120V single-phase; Outdoor lighting = 3kW 120V single-phase Heating System (Demand Factor = 0.60): Electric Furnance - 17,000 btuh 240V single-phase • Convenience Power (Demand Factor = 0.35): 50 duplex outlets rated at 1.5A 120V single phase • Include 20% spare circuits for future expansion • The system has a...
Problem 2: A pump station is fed by a 2000 A, 480 V three-phase electrical service. The station runs two small motors, giving it a load profile of 350 kW with a 0.82 lagging PE. Determine the minimum allowed gauge of the service conductors. Feeder lines are aluminum, THW, contained within a raceway with an ambient temperature of 40 °C. State the specific article(s)/tables used to determine your answer. 13 55 The station is being expanded to include two new...
You have a sensor that has a maximum output of 25 Volt, and you want to feed this signal intoa data acquisition (DAQ) board with a maximum input in the range 0, +101 Volt. Design a circuit that matches the sensor to your DAQ board with the following design criteria: a) You need to attenuate the input signal by a factor of 2.5 b) The sensor cannot provide any current; therefore you need to make sure not to cause a...
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