F15 - Safety - Sources of danger: mains, power supplies and high current batteries.

When using amateur euipment from a safety point of view:
1. Always earth the chasis to the mains earth
2. Always earth the chasis to an RF earth
3. Always work on live equipment with an earthed wrist strap
4. Always work on your own so that you are not distracted into making a mistake
Which of these is the least likely source of danger?
1. 240 mains voltage
2. The power supply for a linear valve amplifier
3. Batteries with a high current and high voltage capacity
4. Batteries with a low current and low voltage capacity
To protect equipment from drawing too much current a fuse is usually used. This is placed in:
1. The neutral wire
2. The earth wire
3. The live wire
4. The PME wire
Which of these is the correct way to wire up a plug?
1. A Live
  B Earth
  C Neutral
2. A Earth
  B Live
  C Neutral
3. A Live
  B Neutral
  C Earth
4. A Neutral
  B Earth
  C Live
In case of an electrical emergency in the shack
1. Check the person electrocuted for signs of life
2. Switch off all power to equipment
3. Switch of power to the transceiver
4. Try to move the electrocuted person with a broom handle