You are an electrician working in an industrial plant. The company is constructing a maintenance shop located 225 feet from the main plant electrical system. You are to install a 400-ampere three-phase wire system in the new maintenance shop. The service is supplied by the existing plant service. The voltage is 480 volts and the voltage drop is to be kept at 3% or below at full load. The conductors are to be aluminum. Determine the wire size needed for the 400-ampere service in accordance with the National Electrical Code. Assume that the conductors have type THWH insulation

Q: What is the need of generating High voltage in the laboratory?

A: Concept- Voltage- When charged electrons (current) are compelled through a conducting loop by the…

Q: Under what circumstances the power transformer will act as a source of harmonic? Rated load contion…

A: The transformer operated in no load or lightly loaded condition it produces harmonics. Due to no…

Q: Whether Surge resistor 10 Ohms should include in calculation?

A: Surge resistor: It is a resistor which is inserted between the rectifier circuit and filter circuit…

Q: Recommend general considerations when selecting a site for Hydroelectric Power Plant.

A:

Q: a) List the difference between destructive and non destructive testing b) Give five examples of…

A: Electrical machines can be DC  or  AC machines. Transformers are electrical machines that transfer…

Q: Sketch the figure and explain in detail about the HVDC circuit breakers

A: Given: The objective is to give an explanation about the HVDC circuit breaker with the figure

Q: What is the circuit breaker,types and how it is work?

A: a circuit breaker is a mechanical device that is used to open any type of electrical contact or to…

Q: Larger conductors should be used for long runs to minimize the? A. Current B. Voltage drop c.…

A: for the long runs the larger conductors are generally used.

Q: What are the key components of a typical electrical substation, and what functions do they serve?

A: Here we need to write key components of a typical electrical substation, and also we need to explain…

Q: Explain the purpose of a circuit breaker in a power distribution system.

A: A circuit breaker is a fundamental component in a power distribution system, and its primary purpose…

Q: Clear print on the keyboard and correct or dislike  In regards to the model of a real transformer,…

A: Transformer is an ac static electrical device that transfers electrical energy from one electrical…

Q: Find the appropriate conductor size for a THHN copper wire with 75 deg Celsius temperature capacity…

A: Note: For THHN wire rated at 75 degree Celsius, National Electric Code table should be followed…

Q: When installing grounding electrode conductor at services, it's common to use a single large common…

A: Here we discuss about grounding/earthing related concept.

Q: What is the most important rule of electrical safety?

A: In this question we will write most important rule of electrical safety...

Q: 12. If overcurrent protection is provided in the transformer of a separately derived system, which…

A: A separately derived system is defined as a premises wiring system in which there is no direct…

Q: The minimum size for copper branch conductors in a dwelling is

A: The minimum size for copper branch conductors in a dwelling is

Q: The short circuit test is used to measure the __________________________________ of the transformer.…

A: the short-circuit test of a transformer is used to determine copper losses in the transformer at…

Q: A welding power source must not be used continuously in long time without care. The rated duty cycle…

A: A transformer-style welding power supply converts moderate voltage, moderate current electricity…

Q: Amprobe Clamp-On Meter (Model RS-3) How many conductors should be in the jaws of the meter when…

A: Only one individual question is to be answered. So, kindly repost the remaining questions. 1. The…

Q: Several factors or conditions can cause conductors to overheat, but often overlooked is the…

A: The heating is the major concern in the conduction as the temperature increases then the resistance…

Q: dentify the test used to measure the copper losses of the transformer. With necessary diagram…

A: For finding the copper losses of transformer we do short circuit test as explain below in step 2

Q: Training is required for: Qualified electricians only. b. Only those workers who work on or near…

A: Bartleby has policy to solve only first question and incase if it has subparts then solve only first…

Q: Coaxial cable insulator is made up of a. Aluminium Foil b. Teflon c. Braided Sheild d. Copper

A: In this question, choose the correct option Coaxial cable insulator is made up of...

Q: What Transient Voltage appears across the Circuit Breaker contacts at, or near Current Zero during…

A:

Q: Select all the basic methods of wiring electrical circuits. Transformer repass wiring PLC wiring…

A: Direct hard-wiring involves making direct connections between wires and devices without using…

Q: Draw a figure that represents one cycle of the AC voltage signal present at a typical household wall…

A:

Q: List three applications of electrical transformers.

A: Brief description : Transformers works based on the principle called electromagnetic induction and…

Q: Can you use the supply transformer size or information to determine the size of a standby generator…

A: Determining the size of a standby generator for use during load shedding or power outages typically…

Q: What is electrical sub station?

A:

Q: Soldering is an example of O a. Heat treatment process. O b. Material removal process. O c. Joining…

A: Soldering is a joining and assembly process.

Q: C: What are the two purposes of using the circuit breakers?

A: We need to write the two purposes of using circuit breakers.

Q: 1. The basic requirement of a d.c. armature wind- ing is that it must be (a) a closed one (b) a lap…

A: This is a problem of dc machines. The explanation is given in the next step

Q: Support the finding that workers face many electrical hazards on the job

A: Electrical Hazards on the job 1.Contact with live wire results in electric shock or burn 2.Exposed…

Q: Course: Electrical Engineering Subject: Electrical Apparatus   If the flux density in the core is…

A:

Q: How does the voltage regulation system in a power substation work, and why is it necessary for…

A: How does the voltage regulation system in a power substation work, and why is it necessary for…

Q: What is regenerative electrical distribution system(REDS)?

A:

Q: 01: (A) It is required to generate a high D.C. voltage 40 KV using power transformer (50 KV,1 KVA).…

A: An autotransformer  has a primary winding and secondary winding which is only one single voltage…

Q: Draw the schematic diagram of Current Transformer and label the parts. Also mention the range of…

A: Schemtaic diagram of current Transformer is as follows The current transformer which is used in the…

Q: What is the electrical-resistance strain gage?

A: The electrical resistance strain gage is as follows: - Electrical resistance strain gages are…

Q: During short-circuit test, rated power at the high-voltage winding must be applied.

A: Solution of this question discusses about short-circuit test on a transformer.

Q: 77. Which is proportional to the frequency in her a. the number of turns b. the type of material…

A: The rate at which operation reapeats for a particular period of time is known as frequency.

Electrical Heating Unit

The conversion of electrical energy to heat energy is known as electric heating. The heating system that converts the electrical energy to heat energy for various application is called electrical heating unit. Electricity is employed as the firing mechanism in electric heating systems, which transforms electric current to heat. Electric heaters have heating elements in the form of electric resistors.