16. Allowing a 1 percent voltage

Solve multiple-

drop for section CI of the feeder,

choice exercises 19 and 20 based on

what size wire will be required?

the following situation to show that

a. 2

c. 6

you

understand

the

principles

of

b. 4

d. 1/0

branch line design.

17. Section IL of the feeder is

Situation. Figure 22 is a detail of

the longest, being 450 feet in

group V for which you are to design

length.

Allowing

1.7

percent

the branch line.

The line will be

voltage drop for this section, what

laid out as shown.

The cumulative

will be the required size wire?

voltage drop to point N has been

a. 4

c. 8

computed as 4.95 percent.

The demand

b. 6

d. 2/0

loads for these buildings are as

follows:

18. Figure 21 shows the tabulation

for the sizes of wire employed for

Building

Demand KVA

that

part

of

the

feeder

line

23

.117

running from the generator to point

24

.204

N.

Assuming the sizes listed are

25

.117

to be installed, what will be the

26

1.062

cumulative percent voltage drop to

27

.117

point N? (Loads are those given in

the situation.)

19. What

is

the

equivalent

a. 4.2

c. 5.6

distance from the branch line in

b. 4.8

d. 6.6

feet for this group of buildings?

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