5. What is the best used of a knob in an installation?
A. permanent
B. Temporary
C. Permanent and Temporary
D. Unspecified
6. What will you do when wires will pass studs, rafters & Tec.?
A. Insert wires in porcelain tube.
B. Insert wires in flexible mica tubing.
C. Pull wires back.
D. Switch is replaced.
9. What is the distance between conductors in centimeters?
A. 5
B. 6
C. 7
D. 8
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