Since the voltages across each branch circuit in a residence are the same, these circuits are A. connected in series. B. connected in parallel. C. controlled circuit configurations. D. complex circuit configurations. I'm not sure if it's the letter B or C, could you help me with the correct answer.

It is often desirable in designing an electric wiring system to be able to control a single appliance from two or more locations, for example, to control a lighting fixture from both the top and bottom of a stairwell. In home wiring systems, this type of control is implemented with three-way and four-way switches. A three-way switch is a three-terminal, two-position switch, and a four-way switch is a fourterminal,two-position switch. The switches are shown schematically in P2.40(a), which illustrates a three-way switch, and 2.40(b), which illustrates a four-way switch. If the lamp (appliance) is to be controlled from more than twolocations, four-way switches are used in conjunction with twothree-way switches. One four-way switch is required for eachlocation in excess of two. Show how one four-way switch plus twothree-way switches can be connected between a and b in P2.40(c) to control the lamp from three locations. (Hint: The fourwayswitch is placed between the three-way switches.)

X.a- The figure shows a fault condition in an ungrounded electrical system. Which of the following will occurbecause of the fault in this system?A. Only the overcurrent protector at Point A will trip open.B. The ground fault will heavily damage the service.C. Nothing will happen until a second ground fault occurs.D. The overcurrent protection will trip, shutting off all the line side power.

What is the minimum height of electrical service entrance

What is the best way to define series and parallel wiring of circuit elements?

The load current in a system is 100 A. the short-circuit current for the smallest fault is 100 A. An overcurrent capable of carrying a current of 5 A continuously is to be used. (a) Suggest a suitable C.T. ratio (b) What will be the current for the smallest fault? (c) Will the protective C.T be able to faithfully reproduce the fault current?

Exercise 2 (from chapter 6) For the diagram below, set up the following items; Kirchhoff loop for the bottom loop of the diagram. Kirchhoff loop for the top loop of the diagram. Kirchhoff loop for junctions A and B.

10. How many 20A of branch circuit is needed for 80 linear feet of show window lighting? a. 7 circuits b. 8 circuits c. 3 circuits d. 5 circuits