A dwelling unit is supplied by a single-phase, 120/240 V service. The electric load of the unit

Question:

A dwelling unit is supplied by a single-phase, 120/240 V service. The electric load of the unit includes:

(1) 7000 VA water heater, 240 V;

(2) 500 VA vent fan, 120 V;

(3) 1200 VA compactor, 120 V;

(4) 7500 VA dryer, 240 V.

Each appliance is served by one branch protected by a circuit breaker.

(a) Determine the rating and the number of poles of each circuit breaker.

(b) Assuming that all the appliances have the same power factor, estimate the minimum percent unbalanced current between the two phases.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Energy Efficient Electrical Systems For Buildings

ISBN: 9781482258332

1st Edition

Authors: Moncef Krarti

See More Books

Question Posted: Apr 29, 2024 03:01 AM

See More Questions

A dwelling unit is supplied by a single-phase, 120/240 V service. The electric load of the unit includes. (1) 7000 VA water heater, 240 V; (2) 800 VA vent fan, 120 V; (3) 1200 VA compactor, 120 V;...
Managing Scope Changes Case Study Scope changes on a project can occur regardless of how well the project is planned or executed. Scope changes can be the result of something that was omitted during...
A car is moving in a circle at a constant speed of 45 m/s. Its radial acceleration is 60 m/s2. Fill in the data table below. t (s) V (m/s) a (m/s) 0 1 2 3 4
PIM Industries, Inc., manufactures electronics components. Each unit costs $30 before the final test. The final test rejects, on average, 5 percent of the 50,000 units manufactured per year. The...
Web Marketing Services Inc. completed these transactions during the first part of January 2014: Jan. 2 Received $5,000 cash from investors, and issued common shares. 2 Paid monthly office rent, $500....
An annual report of Sears, Roebuck and Co. disclosed the discontinuance of sct eral business segments, including Coldwell Banker Residential Services. The estimated loss on disposal of these...
18. Consider the June 165, 170, and 175 call option prices in Table 1. a. Does convexity hold if you buy a butterfly spread, buying at the ask price and selling at the bid? b. Does convexity hold if...
Go to the Federal Reserve Web site, www.federalreserve.gov. Click on the Consumer Information tab, and research consumer credit in the various hyperlinks. Find average interest rates charged by...
On January 1, 2020, Sage Company issued 10-year, $1,890,000 face value, 6% bonds, at par. Each $1,000 bond is convertible into 16 shares of Sage common stock. Sage's net income in 2020 was $470,000,...
Determine the size of the service entrance THW (Cu) conductors required for phases A and B using the optional method of a 310 m2 (3200 ft2) dwelling with the following loads: 12.0 kVA range; 6.0 kVA...
Determine the size of the service entrance THW (Cu) conductors required for phases A and B and the neutral of a 310 m2 (3200 ft2) dwelling with the following loads: 12.0 kVA range; 6.0kVA dryer; 30.0...
Figure 8.28 shows the contour map of z = f(B, t) which gives the balance in a bank account (in thousands of dollars) t years after an initial investment of B thousand dollars. (a) Label the contours...
What are factors which hamper the promotion of an entrepreneurial culture in South Africa?
Please Help P/R End Date 2/8/2019 Company Name: Prevosti Farms and Sugarhouse Check Date 2/13/2019 Tax Name M/S # of W/H Hourly Rate or Period # of Regular # of Overtime # of Holiday Wage Hours Hours...
Read the description of following adjustments that are required at the end of the accounting period for Hubbard Repair Services, a new firm. Determine the account and amount to be debited and the...
Jamie Lee and Ross, now 57 and still very active, have plenty of time on their hands now that the triplets are away at college. They both realized that time has just flown by; over twenty-four years...
Here are summary statistics for randomly selected weights of newborn girls: n = 36, x = 3180.6 g, s = 700.5 g. Use a confidence level of 99% to complete parts (a) through (d) below. a. Identify the...
Indicate what the scatter diagram and probable regression line would look like for two variables that are correlated in each of the following ways. In each instance, assume a negative intercept. a....
The diagram shows the two forces acting on a small object. Which of the following is the resultant force on the object? A. 8 N downwards B. 8 N upwards C. 2 N downwards D. 2 N upwards 3 N 5 N
crane Inc. common chairs currently sell for $30 each. The firms management believes that it's share should really sell for $54 each. If the firm just paid an annual dividend of two dollars per share...
Determine the simple interest earned on $10,000 after 10 years if the APR is 15%
give me an example of 10 transactions from daily routine that we buy and put for me Liabilities + Owners' Equity + Revenues - Expenses

A dwelling unit is supplied by a single-phase, 120/240 V service. The electric load of the unit

Question:

Step by Step Answer:

Energy Efficient Electrical Systems For Buildings

Students also viewed these Engineering questions