Approved Grounds - Avaya CMC1 Installation Manual

CAUTION:
System grounding must comply with the general rules for grounding provided in Article
250 of the National Electrical Code (NEC), National Fire Protection Agency (NFPA) 70,
or the applicable electric code in the country of installation.
CAUTION:
AC mains wiring and testing must be performed by a qualified electrician and must
conform to Article 250 of the National Electrical Code (NEC), National Fire Protection
Agency (NFPA) 70, or the applicable electric code in the country of installation.
Check AC Power
Each CMC uses an auto-ranging 85 to 264 VAC power supply, 47 to 63 Hz, 330 W, 4.5 amps (100-120
VAC) or 2.3 amps (200 to 240 VAC), at 500 VA. The AC power source can be 1 phase of 120 VAC with
neutral (100 VAC for Japan) with 15 amp circuit breaker, or 1 phase of 220 or 240 VAC (200 VAC for
Japan) with 10 amp circuit breaker. The AC cord uses a NEMA 5-15P plug or an IEC 320 plug.
Before powering up the system, check the AC power in the equipment room using a KS-20599 digital
voltmeter (DVM) (or equivalent).
1
Measure the AC voltage between the hot and neutral side of the receptacle.
2
Depending on the AC power source, verify that the meter reads 90 to 132 VAC or 180 to 264
VAC. If not, have a qualified electrician correct the problem.
3
Measure the voltage between the neutral and ground side of the receptacle.
4
Verify that the meter reads 0 VAC. If not, have a qualified electrician correct the problem.
5
When finished, set the AC mains circuit breakers to OFF.

Approved Grounds

An approved ground is the closest acceptable medium for grounding the building entrance protector,
entrance cable shield, or single-point ground of electronic telephony equipment. If more than 1 type of
approved ground is available on the premises, the grounds must be bonded together as required in Section
250-81 of the National Electrical Code.
Grounded Building Steel
the following grounds: acceptable metallic water pipe, concrete encased ground, or a ground ring.
Acceptable Water Pipe
direct contact with the earth for at least 10 ft (3 m). The pipe must be electrically continuous (or made
electrically continuous by bonding around insulated joints, plastic pipe, or plastic water meters) to the
point where the protector ground wire connects. A metallic underground water pipe must be
supplemented by the metal frame of the building, a concrete-encased ground, or a ground ring. If these
grounds are not available, the water pipe ground can be supplemented by 1 of the following types of
grounds:
•
Other local metal underground systems or structures
tanks and piping systems
•
Rod and pipe electrodes
driven to a minimum depth of 8 ft (2.4 m)
Installation, Upgrades and Additions for Avaya CMC1 Media Gateways
June 2004
—
The metal frame of the building where it is effectively grounded by 1 of
—
A metal underground water pipe, at least 1/2-in. (1.3 cm) in diameter, in
—
A 5/8-in. (1.6 cm) solid rod or 3/4-in. (2 cm) conduit or pipe electrode
Installing and Cabling the Cabinets
AC Power and Ground
—
Local underground structures such as
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