Basic HTML Version
30
SECTION 1
11
Now go back to the text and scan it in order
to answer the following questions.
a
What type of wiring system does a
battery-powered circuit use?
b
Why are three wires used?
c
What can the correct size of a cable
prevent?
d
When were electrical codes first published?
e
What are the current European rules
regarding the wiring safety codes like?
wiring safety codes
codici di sicurezza degli impianti elettrici
national wiring standards
standard nazionali di cablaggio
TECHNICAL ENGLISH
Region or Country
Region or Country
Standard wire colours for FLEXIBLE cable
(e.g. Extension cords, power line cords and lamp cords)
Standard wire colours for FIXED cable
(e.g. In-, On-, or Behind-the-wall wiring cables)
Phases
Phases
Neutral
Neutral
Protective earth/ground
Protective earth/ground
European Union (EU), Australia,
South Africa (IEC 60446)
United States, Canada
European Union (EU) (IEC 60446)
including UK from 31 March 2004
UK prior to 31 March 2004
United States
green
/
yellow
green
(
green
)
green
/
yellow
green
/
yellow
green
(formerly)
bare conductor,
sleeved at terminations (formerly)
green
(
green
)
bare conductor
green
/
yellow
(ground or isolated
ground)
brown
black
(
brass
)
brown
,
black
,
grey
red
,
yellow
,
blue
black
,
red
,
blue
(120/208/240V)
(
brass
)
brown
,
orange
,
yellow
(277/480V)
blue
white
(
silver
)
blue
black
white
(120/208/240V)
(
silver
)
grey
(277/480V)
A closeup of an electrician’s hands as he connects wires using
a wire-nut. All work is being performed to code by a licensed
master electrician.
Progetto FOR ELECTRONICS_unit_1.indd 30
10/01/