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Modern Electrical Installation for Craft Students, 3rd Edition
book

Modern Electrical Installation for Craft Students, 3rd Edition

by Brian Scaddan
November 2013
Intermediate to advanced content levelIntermediate to advanced
182 pages
6h 6m
English
Newnes
Content preview from Modern Electrical Installation for Craft Students, 3rd Edition
62 Cells, batteries and transformers
-H
Diagram 73 Hysteresis loop for transformer core
used in installation work in appliances such as battery chargers and/or
alarm circuits. Rectifiers are discussed in greater detail in Volume 3.
Points to note (I.E.E. Regulations)
1.
Step-up transformers forming part of a consumer installation
should have a linked switch provided for isolating the transformer
from the supply.
2.
Portable appliances using extra-low voltage, i.e. train sets should
not be supplied from an auto-transformer.
3.
The common terminal of an auto-transformer should be connected
to the neutral conductor (Diagram 69).
4.
Hand-held appliance ...
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Publisher Resources

ISBN: 9781483106205