Grounding Requirements - Meridian Nortel 1 Option 11C Mini Installation Manual

Grounding requirements

Chapter 3 — System and site requirements
Table 9
Minimum fastener requirements
Type of wall
Wooden studs
Metal studs
Concrete
(2000 PSI)
Masonry
Fasten the mounting bracket for each chassis to the piece of plywood with the
five, 1 in. #14 screws supplied with the bracket.
"Chapter 8 — Bracing the Option 11C Mini against earthquakes" on
page 105 of this guide contains a detailed procedure for earthquake bracing.
Failure to follow grounding recommendations can result in a system
installation that is:
• unsafe for personnel working on, or using the equipment
• not protected correctly from lightning or power transients
• subject to service interruptions
Before you install an Option 11C Mini and before you apply AC power,
measure the impedance of the building ground reference. An ECOS 1023
POW-R-MATE, or another meter like the POW-R-MATE, is acceptable for
this purpose. If the ground path connected to the Option 11C Mini has an
impedance of 5 Ohms or more, make better grounding arrangements. Make
any improvements to the grounding system before you install the Option 11C
Mini.
Fasteners
#10 wood screws
# 14 sheet metal
screws
1/4 in. HILTI KB-II
1/4 in. Ramset
Redhead Dynabolt
sleeve anchor
WARNING
Option 11C Mini Planning and Installation Guide
Page 47 of 332
Embedded a minimum of 1
in. in wood studs
Embedded a minimum of 1
in. in metal studs
Embedded a minimum of
1 1/8 in.