The National Grid

What is the National grid?

A network of cables and transformers that connect power stations with houses and shops in the uk

The National grid is a network of ____ and ________ that connect power ____ with hoses and shops in the UK.

Cables, transformers, station’s

Power stations create the

Electrical current

Why are larger power stations more efficient than smaller ones?

Because they can burn lots of fuel at very high temperatures.

What happens inside the power station (step 1)

They burn fuel at very high temperatures to create very hot steam. This steam turns turbines which are more efficient at higher temperatures.

Power stations produce electricity at what voltage?

25000V

After leaving the power station, step up transformers then increase the potential difference to

40000V

Why do step up transformers increase the potential difference to 40000V?

To reduce current and how much heat is lost when its being Transported across a country- this allows the National grid to be more efficient

What do step down transformers do?

They take electricity down to a safer voltage (230V) in our homes