Page 655 - The City and Guilds Textbook: Plumbing Book 1 for the Level 3 Apprenticeship (9189), Level 2 Technical Certificate (8202) and Level 2 Diploma (6035)

ELECTRICAL PRINCIPLES AND PROCESSES FOR CHAPTER 11

BUILDING SERVICES ENGINEERING

INTRODUCTION

A major part of your work as a plumber will incorporate electrics. This chapter contains all the information
you need to understand the basic principles of electrical supplies and materials and the procedures for safe
electrical isolation that you may encounter. You will also learn how to test the supply safely when you have
carried out basic tasks.

By the end of this chapter you will have knowledge and understanding of the following:
● electrical supplies used in domestic plumbing systems
● the components used in electrical installations
● basic electrical tasks
● the procedures for safely isolating supplies
● identifying critical safety faults on electrical components.

1 ELECTRICAL SUPPLIES USED IN
DOMESTIC PLUMBING SYSTEMS

Documents required to design electrical

systems
A regulation is a rule or directive made and maintained by an authority. If no
regulations were in place you would be free to do as you please, but this would
create the potential for you to harm others through your actions.
Having regulations in place ensures that all the things you do are to certain
standards. The relevant UK standard for electrical works is BS 7671:2018 (the
18th Edition IET Wiring Regulations). KEY TERM
BS 7671 covers requirements for design, erection and verification of electrical European Norm number: a
installations so as to provide for safety and proper functioning for the intended number that shows that
use. Every fitting or component must have a BS number attached to it to something meets not only
a British Standard but also
show that it meets the standards. If it hasn’t, then it may not comply with the the European Standard,
regulations. You may also notice that some fittings and tools have a BS EN to ensure consistency
European Norm number. throughout the EU.

Building Regulations 2010

The Building Regulations in the UK cover the design and construction of
buildings. They also cover the health and safety of people in those buildings. The
Building Regulations state that in most cases people carrying out work should
arrange for a third party to check that work meets the required standards.

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