ADTRAN 25 Manual

A SERVICE OF

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INSTALLATION

Secondary Protection

External secondary protection,

located at the trunk access area of the

System 25 cross-connect field, is required for all trunks and off-premises

lines. Refer to Table 2-B for approved trunk protectors.

FROM AC

LOAD CENTER

(TWO SEPARATELY

FUSED 15 AMP

CIRCUITS)

SINGLE

POINT

GROUND

H

GROUND

I

LOAD

CENTER

II

(GREEN)

(#14 AWG)

I

/

TO CABINET NO. 1

GROUND BAR MOUNTED ‘ GROUND BLOCK (MAX.

ON 4“ BOX (SQUARE D

LENGTH =

20 FT.)

PK9GTA OR APPROVED

EQUIVALENT)

4“ BOX (RACO 230

OR EQUIVALENT)

HUBBELL RECPTS.

( 5262 15 AMP

OR EQUIVALENT)

4“ COVER (RACO 807

OR EQUIVALENT)

APPROVED

BUILDING GROUND

(#6 AWG, COPPER)

Figure 2-9.

AC Power Distribution—Multiple Cabinet System

2-21