1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
notka56 [123]
2 years ago
10

Six 15-HP continuous-duty motors are connected to a common 480-volt feeder. The nameplate of each motor indicates: Full load amp

s 18.6, NEMA Code B, and SF 1.10. The conductors supplying each motor are to be copper with THHN insulation, and the feeder conductors supplying all motors are to be copper with THHN insulation. What size conductor should be used to supply each motor and what size conductor should be used for the feeder conductor
Engineering
1 answer:
WITCHER [35]2 years ago
6 0

The size conductor that should be used to supply each motor is 12 AWG and the size conductor  that should be used for the feeder conductor is 1/0AWG.

<h3>Size conductor</h3>

a. Using NEC table 430.250

Running connect for 150HP  connected to 460V = 21 A

Conductor size=25% current to 125% current (Increase)

Increase current=21×125/100

Increase current=26.25 A

Nearest standard conductor size using NEC table 310.15(B)(16)=25 A

Since the motor contain NEMA design code the conductor will be choosing from 75° column which means that the size conductor that should be used to supply each motor is 12AWG copper conductors.

b. Feeder conductor

Using NEC section 430.24  plus ampere rating of other motors

Running current

Using NEC Table 430.250

Running current=26.25+21+21+21+21+21

Running current=131.25 A

The value that is greater than 131.25 A  under  75° column of NEC Table 310 (B)(16) is 150 A which means that the size conductor that should be used for the feeder conductor is 1/0 AWG conductors.

Therefore the size conductor that should be used to supply each motor is 12 AWG and the size conductor  that should be used for the feeder conductor is 1/0AWG.

Learn more about size conductor here:  brainly.com/question/14825264

#SPJ1

You might be interested in
Construction support involves mostly what kind of work?
Paraphin [41]

Answer:

Outdoors

Explanation:

Construction workers perform outdoors.

6 0
2 years ago
What is the foundation​
vova2212 [387]

Answer:

foundation is ........see more

7 0
3 years ago
What information is usually gathered during vehicle crash tests?
aleksley [76]
Time, distance, damage
7 0
3 years ago
Do not use C++ pointers (this is not a topic of this course).
noname [10]

The program is an illustration of functions in C++

C++ functions are collection of named program statements that are executed when called

<h3>The C++ program</h3>

The program in C++, where comments are used to explain each action is as follows:

#include <iostream>

#include <cmath>

using namespace std;

//This defines the boolean method

bool isoscelesTriangleHeightAndArea(double base, double hypotenuse, double height, double area) {

   //This checks for invalid base and height

   if(base < 0 || hypotenuse < 0){

       return false;

   }

   //This returns true if base and height are valid

   return true;

}

//The main begins here

int main(){

   //This initializes the variables

   double base, hypotenuse, height, area;

   //This gets input for base and hypotenuse

   cout<<"Base: ";    cin>>base;

   cout<<"Hypotenuse: "; cin>>hypotenuse;

   //The calls the boolean method

   bool success = isoscelesTriangleHeightAndArea(base, hypotenuse, height, area);

   //If success is True

   while (success){

       //This calculates height

       height = sqrt(hypotenuse*hypotenuse - (base/2) * (base/2));

       //This calculates area

       area = 0.5 * base * height;

       //This prints height

       cout << "Triangle height is " << height << endl;

       //This prints area

       cout << "Triangle area is " << area << endl;

       //This gets input for base and hypotenuse

       cout<<"Base: ";    cin>>base;

       cout<<"Hypotenuse: "; cin>>hypotenuse;

       bool success = isoscelesTriangleHeightAndArea(base, hypotenuse, height, area);

   }

   cout << "Invalid Input!" << endl;

}

Read more about C++ programs at:

brainly.com/question/24833629

#SPJ1

4 0
2 years ago
Help me pls with tools
irina1246 [14]

Answer:

How?

Explanation:

3 0
4 years ago
Read 2 more answers
Other questions:
  • Air (ideal gas) is contained in a cylinder/piston assembly at a pressure of 150 kPa and a temperature of 127°C. Assume that the
    12·1 answer
  • For flow over a flat plate with an extremely rough surface, convection heat transfer effects are known to be correlated by the
    12·1 answer
  • When a 2-kg block is suspended from a spring, the spring is stretched a distance of 20 mm. Determine the natural frequency and t
    14·1 answer
  • Consider a 50-mH inductor. a. Express the voltage across the inductor and then evaluate it at t = 0.25 s if iL (t) = 5e −2t + 3t
    10·1 answer
  • Can someone please do this for me ive been sick for the past week and am behind
    6·1 answer
  • Stucco will shrink as it hardens and cures.<br> A. true<br> B. false
    11·1 answer
  • ⚠️I mark BRIANLIST ⚠️The same engineering teams are able to design and develop the different subsystems for an airplane.
    5·2 answers
  • Imagine that you are the architect that designed the school. Identify five safety hazards that should be included in the design
    15·1 answer
  • I need the answer please
    7·1 answer
  • The coefficient of friction is found by ?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!