Table of Contents XV
Earthing ............................................................................................................................ 334 Appendix 7
Appendix 7.1 What Is the Surge ..................................................................................................... 334
Appendix 7.2 The Earthing Modes ................................................................................................. 335
Appendix 7.3 Thunder Proof Ground Method in the Monitor System ............................................ 336
Appendix 7.4 The Shortcut Way to Check the Electric System by Digital Multimeter .................... 337
RJ45-RS-232 Connection Cable Definition ................................................................... 340 Appendix 8