Principle

When a separating transformer is used, there is no conductive
connection between the primary circuit ("ring main") and the
secondary circuit ("consumer circuit"). There is no voltage between
the consumer circuit and earth. When a person touches a lead in the
consumer circuit that is carrying current but is not insulated, he
is protected by this transformer (protective separating
transformer).

Benefits


No additional cable connections between the building blocks needed - clear arragned and quick setup

Contact saftey due to puzzle blocks system

Corrosion-free gold plated contacts

Doubled earning sucess: Electric circuit diagram on top, real components can be seen unterside



Tasks

How can a dangerous flow of current from an L-lead through the
human body to earth be prevented?

Set up a power supply with a protective separating
transformer.