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Determine the maximum locked-rotor current for a 30-hp, 460-V, 3-phase motor has a nameplate kilovolt-ampere code letter G.

Consider the following Transformer Which is a 4 kVA transformer used to step down 480 to 120 volts to supply a single-phase two-wire circuit  The calculated primary full load current for this transformer is [Iprimary] The maximum primary over current would be [OCpI] The calculated secondary full load current for this transformer is [Isecond] The maximum secondary over current would be [OCsI]

According to: For a 100,000 ft2 school if the initial calculated load was 300,000 VA the calculate the overall load is:

Consider a branch circuit for 9W fixed electric space heater w/ 5.1 Amp blower motor 230 Volt 3-phase What is an adequate overcurrent protection size rating?

Consider a branch circuit for 12kW fixed electric space heater w/ 5.2 Amp blower motor 208 Volt 3-phase What is an adequate overcurrent protection size rating?

Select all the true statements from the following options:

Consider the following three-phase short circuit: With  A. 1000 kVA Transformer with 480V, 3Ph, 3.5% Z B. 25′ – 500kcm copper, 3 single conductor 6 per phase service entrance in steel conduit C. 2000 A switch with 2000 A fuse x1 Fault X1 D. 400 A switch with 400 A fuse E. 50′ – 500kcm copper, 3 single conductor feeder cable in steel conduit x2 Fault X2   Using Point-to-Point calculation (using the given impedance at 100%) The total current for short circuit sym RMS at Fault X1 is [IscRMSx1] The total current for short circuit sym RMS at Fault X2 is [IscRMSx2]

What is the demand factor (%) for a Household with 5 appliances less than 3½ kW Rating

Consider a 10-unit office building where each unit contains one A/C rated at single phase 3hp 230V The full load current for one would be: [flc1] One motor load would then be: [loadVA] The total load for all these A/C would be: [totalLoad]

According to: For a 100,000 ft2 school if the initial calculated load was 1,400,000 VA the calculate the overall load is: