Fatal accidents can occur when electrical appliances are handled
in a household. Most of such accidents result from careless
behaviour or lack of knowledge. The person model is to be used
to demonstrate which parts of an electric circuit are extremely
dangerous to touch.
Power is supplied to a household via an L-lead connected to the
supply voltage and an earthed N-lead. The earthing of the N-lead is
necessary to produce a steady potential against earth (important
when lightning strikes or insulation is faulty). The earthing of
the N-lead is associated with dangers, however, as an electric
circuit can then be closed to earth. This experiment demonstrates
when there is danger because of the earthing of the N-lead and how
such danger can be avoided.
- 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
Which dangers are associated with electric current?
Set up an electric circuit with a safety fuse, switch and
filament lamp. In a power supply network there is an L-lead and an
earthed N-lead. Use the person model to examine the
dangers which are associated with electric current and with the
earthing of the N-lead.