Earthing and bonding

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Across
  1. 2. By convention we take Earth to be at this voltage
  2. 5. steel conduit is this type of conductive part
  3. 6. colours used for a protective conductor
  4. 8. this type of equation means 'impassable to heat'
  5. 9. protective bonding conductor This conductor links incoming services to the M.E.T
  6. 10. the ....... test spike is installed the furthest from an earth electrode under test
  7. 11. type of Earth electrode
  8. 12. For current to flow a ....... must exist
  9. 14. this conductor connects an 'exposed conductive part' to the M.E.T
Down
  1. 1. A conductor that can link an 'exposed conductive part' to an 'extraneous conductive part'
  2. 3. This conductor links the M.E.T to the earth electrode in a T.T system
  3. 4. Earth and neutral are connected here
  4. 7. This type of conductive part is not part of the electrical installation however could introduce earth potential
  5. 13. Earth system that utilises a PEN conductor