Electricity
Advisor
Mr. Hans-Jürg Beat GübeliIn the electronics teaching lab: Mr. Martin Gähwiler
General information
- Electric devices should not be kept in proximity of splashing water.
- Defects on cables, plugs and devices should be repaired immediately by a professional.
- Protective devices should not be bypassed or modified.
- Devices which for some reason cannot be grounded should be connected to an isolating transformer, or protected by a fault current circuit breaker.
- Before any intervention on the device, unplug the power cable. Beware of capacitors, which can retain their charge for a long time.
Warning signs
![]() | Dangerous electric voltage | ![]() | High voltage | |
![]() | Non-ionizing electromagnetic radiation | ![]() | Magnetic field |






