Permissible protective measures in TN systems:
• Overcurrent protective devices
• Residual current protective devices
(but not in the TN-C system)
A.2.2 TT system
All exposed conductive parts protected by the same protective device must be
connected to a common ground electrode by means of protective conductors
(see gure A4).
Figure A3: TN-C system
Figure A4: TT system
To Next Page
Loading...
