Danger of death from electric current!
Contact with electrically charged components puts you at immediate risk of death from electric shock.
Damaged insulation or individual components can be lethal.
Work on electrical equipment must be performed by qualified electricians only.
If the insulation is damaged, switch off the power supply immediately and arrange for repair.
Before commencing work on active components of electrical systems and equipment, disconnect from the mains and ensure that they remain disconnected for the duration of the work.
Follow these 5 ความปลอดภัย rules:
Disconnect from mains.
Secure the equipment from being switched back on.
Ensure that the equipment is de-energized.
Earth and short-circuit the equipment.
Cover or shield any surrounding energized parts.
Never bypass or disable fuses.
When replacing fuses, make sure that the correct amperage is used.
Keep moisture out of electrically charged components.
This can cause short-circuit.