User manual

Grounding Reference
Appendix C
Figure C-3: Normal mode and Common modC
1-3 Normal Mode and Common Mode Have you ever tried to
measure the voltage between a live circuit and a concrete floor? How
about the voltage between neutral and a concrete floor? You will get
nonsense values. ‘Hot’ and ‘Neutral’ are just rela- tional signals: you
will get 110VAC or 220VAC by measuring these sig- nals. Normal
mode and common mode just show you that the Frame Ground is the
most important reference signal for all the systems and equipments.
ADAM-5000/TCP User’s Manual
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