Chapter 3 — System and site requirements

Page 47 of 332

 

 

 

 

 

 

 

Table 9

 

 

 

 

 

Minimum fastener requirements

 

 

 

 

 

 

 

 

 

 

Type of wall

Fasteners

 

 

 

 

 

 

 

 

 

Wooden studs

#10 wood screws

Embedded a minimum of 1

 

 

 

 

in. in wood studs

 

 

Metal studs

# 14 sheet metal

Embedded a minimum of 1

 

 

 

screws

in. in metal studs

 

 

Concrete

1/4 in. HILTI KB-II

Embedded a minimum of

 

 

(2000 PSI)

 

1 1/8 in.

 

 

 

Masonry

1/4 in. Ramset

 

 

 

 

 

Redhead Dynabolt

 

 

 

 

 

sleeve anchor

 

 

 

 

 

 

 

 

 

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.

Grounding requirements

WARNING

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.

Option 11C Mini Planning and Installation Guide

Page 47
Image 47
Nortel Networks Option 11C Mini manual Grounding requirements, Minimum fastener requirements Type of wall Fasteners