Page 86 - Electrical Safety of Low Voltage Systems

The Earth 69

12. Conventionally,1mis considered the distance equal to a man’s normal maxi-
mum horizontal reach.
13. As persons are not necessarily electrically similar, we refer to a “standard”
person, whose resistance is conventionally defined as it is explained in
Chap. 5.
14. In electrical systems exceeding 1 kV (i.e., defined as high-voltage systems),
international standards conventionally define touch voltage as a contact with
one hand and both feet.
15. An exception to this rule can be made for EXCPs of such small dimensions that
cannot be effectively contacted by persons.
16. See Chap. 5 for further details.
17. IEEE Std. 80–2000, “IEEE Guide for Safety in AC Substation Grounding.”