This Electrical power and control signals must be delivered to electrical devices reliably and safely so electrical
system functions are not impaired or converted to hazards. This goal is accomplished through careful circuit
design, prudent component selection, and practical equipment location. By carefully studying this chapter and
the preceding chapter, so you can understand how these circuits work and the adjustments and repairs required
to maintain the electrical systems in peak condition. Sci-tech Engineers have designed the systems, keeping in
consideration that all components are exposed & painted with different colour. This makes easy understanding
of operation of system.