How can Transformers help with Distributing Electricity and the National Grid?

-If we want the Voltage very High [400,000 V] then we need to use Transformers, with Pylons that have Insulators -Transformers have 2 Coils, Primary and Secondary, and a Iron Core which Joins them Together. -A STEP UP Transformer INCREASES the Potential Difference, which is Useful in this Case. They do this by having more Turns on the Secondary Coil -A STEP DOWN Transformer DECREASES the Potential Difference, which is Useful when near our Consumers. They do this by having more Turns on the Primary Coil.