Manual calculations are still extensively used and in particular
are necessary for checking and verifying various software
calculation design packages. It is highly recommended that users of
such software familiarise themselves with the rudiments of these
calculations prior to using the software packages.
This essential book fills the gap between software and manual
calculations. It provides the reader with all the necessary tools
to enable accurate calculations of circuit designs. Rather than
complex equations, this book uses extensive worked examples to make
understanding the calculations simpler. The focus on worked
examples furnishes the reader with the knowledge to carry out the
necessary checks to electrical cable sizing software
programmes.
Other key features include: Updated information on 230 volt
references and voltage drop under normal load conditions New
sections on buried cables that take into account soil thermal
conductivity, trenches and grouping, allowing readers to carry out
accurate cables sizing Information and examples of steel wired
armour cables, new to this edition. This includes sufficiency
during short circuits and, for cables with externally run CPCs,
gives unique fault conditions. Covers calculations of
cross-sectional areas of circuit live conductors Earth fault loop
impedances Protective conductor cross-sectional areas and short
circuit conditions Short circuit protection.
The last chapter combines all of the calculations of the
previous chapters to enable the reader to complete an accurate
design of an installation circuit under all conditions.
A unique tool for detailed electrical installation trade,
"Electrical Installation Calculations, Fourth Edition" is
invaluable to electricians, electrical designers, installers,
technicians, contractors, and plant engineers. Senior electrical
engineering students and technical colleges, junior engineers, and
contracts managers will also find this text useful.
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