A 15-ampere, 120-volt lighting branch circuit would be 12 amperes maximum connected load. true or false
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- Pls help me answer this . DC Voltage has ______ polarityIn an overhead system, the basis of comparison is the maximum voltage between conductor and ground. Why ?For residential wiring, not less than one 15-ampere lighting branch circuit should be provided for every ______________ ft2 of floor area. If 20-ampere lighting branch circuits are used, provide one 20-ampere lighting branch circuit for every _____________ ft2 of floor area.
- Refer to the National Electrical Code or the working drawings when necessary. Whereapplicable, responses should be written in complete sentences.A 300-kilovolt-ampere transformer bank consisting of three 100-kilovolt-amperetransformers has a 3-phase, 480-volt delta primary and a 120/240-volt, 3-phase, 4-wiredelta-connected secondary.For problems 1 through 4 show calculations and/or source of information 1. What is the full-load current in the primary? 2. What is the full-load current in the secondary?Refer to the National Electrical Code or the working drawings when necessary. Whereapplicable, responses should be written in complete sentences.A 300-kilovolt-ampere transformer bank consisting of three 100-kilovolt-amperetransformers has a 3-phase, 480-volt delta primary and a 120/240-volt, 3-phase, 4-wiredelta-connected secondary.For problems 1 through 4 show calculations and/or source of information. 1. Sketch the secondary connections, and indicate where a 120-volt load couldbe connected.Refer to the National Electrical Code or the working drawings when necessary. Whereapplicable, responses should be written in complete sentences.A 300-kilovolt-ampere transformer bank consisting of three 100-kilovolt-amperetransformers has a 3-phase, 480-volt delta primary and a 120/240-volt, 3-phase, 4-wiredelta-connected secondary.For problems 1 through 4 show calculations and/or source of information. 1. What is the proper rating of the fuses to install for overcurrent protection of thesecondary?2. What is the kilovolt-ampere of the bank if one of the transformers is removed?
- III. Procedures: BLOCK DIAGRAM Interconnect the electrical components per set in a block diagram according to its function and voltage rating. SINGLE-LINE DIAGRAM Interconnect the electrical components per set in a single-line diagram according to its function and voltage rating using standard electrical symbols and legends if needed. Set A Transformer (230/115-VAC) Circuit Breaker Electric Fan (230-VAC) Television Set (115-VAC) ACU (230-VAC) Generator (230-VAC) Set B Fuse Lightings (230-VAC) Generator (115-VAC) Transformer (230/115-VAC) Refrigerator (115-VAC) Transformer (115/230-VAC)Most residential general lighting circuits are wired with 14-AWG copper conductors and are protected by 15-amp circuit breakers. However, there are many electricians who install 12-AWG copper conductors and protect them with 20-amp circuit breakers. How will you know which conductor size and which circuit breaker size will be used for the general lighting branch circuits in the house you are wiring?Grounding Lighting Fixtures. There are specific requirements for grounding lighting fixtures. How must they be grounded and with what size conductors? Be sure and cite the code in your answers.
- A 12-ohm resistor is connected in parallel with a series combination of 8-ohmand 16-ohm resistors. If the voltage across the 8-ohm resistor is 48-volts,calculate the (a) total resistance, (b) total supply voltage, and (c) circuit current.Determine the size and type of wire to he installed to a building with temperature that reaches 80-90 degrees with the following loads. 10pcs. Of 200- watt bulb 15pcs. Of 100-watt bulb Single phase, 230 source. And if you would be installing the wire inside an EMT conduit, what size would you use assuming that there would be 4 wires inside the EMTWhat is voltage of location 1 in this 120/240 volt, single phase, 3-wire diagram? Enter only the whole number, no units. N A B ground 1 2 < B - N