User Manual

December 16, 2002 Part 003609A revision 01 37
Chapter 2: Site Preparation
Ground Resistance
The resistance of the building principal ground should be as low as practically
possible (typically less than 5
Ω). Under no circumstances should the resistance
exceed the local electrical utility limits of 25Ω (NEC article 250-56, 1999).
Additional Site Requirements
See Telcordia Technologies GR-1275-CORE for a comprehensive description of
generic site requirements.