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Distribution + Safety of Electricity (Domestic Electricity)
National Grid
Transformers
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Cards (3)
Transformers change
voltage
and
current.
STEP-UP TRANSFORMERS
increase voltage
before it’s transmitted through cables.
current is reduced, so by less energy is lost as
heat
in cables - increases
efficiency
of system.
STEP-DOWN TRANSFORMER
decreases voltage
, making it
safer
for consumers.