Installation manual

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D9124 Operation & Installation Manual

Page 12

74-06799-000-D 2/95

Connecting the Earth Ground

For safety and to help prevent

damage from electrostatic charges

or other transient electrical surges

you must first ground the system

before making any other

connections. Before connecting the

green wire from the 120 VAC

service, crimp a connector to the

end of it. Place objects on this stud

in the following order:

1. Place a star washer on the

stud.

2. Slip the green wire from the

120 VAC service onto the star

washer on the stud.

3. Place the hex nut on the stud

and tighten firmly.

4. Repeat steps 1 through 3 for the two green wires in wiring harness J1 on the upper

battery shelf.

Connecting the 120 VAC Power Input

Radionics recommends that only a licensed electrician make 120 VAC connections to the

D9124 System. The electrician should make all connections conform to NEC 70 and

connect the D9124 system to a suitable ground connection.

Danger: Turn off the circuit breaker before connecting the 120 VAC to the system.

Leaving the circuit breaker on can cause injury or death by electrocution.

To connect the 120 VAC service to the D9124, follow these steps:

1. If the 120 VAC cabling is already installed go to step 5, if not, go to step 2.

2. Make sure the incoming High Voltage (120 VAC) from the D9124 is disconnected.

Important!

Be sure

that the circuit breaker

is OFF.

3. Remove the knockout

cover on the lower left

side of the D9101

enclosure and install

appropriate hardware

for connection to

conduit.

4. Pull the 120 VAC

Power wires through the conduit hardware installed in the knockout, and into the

transformer enclosure.

5. Using appropriate hardware, connect wires to the flying leads from connector J1 as

shown in

Table 1

STUD

STAR WASHER

SHEET METAL PANEL

NUT

LUG

Figure 5: Wire Connections to Ground Stud

Wire From 120

Volt Service

Connect to D9124

System on...

Green Ground Stud Below D1601

White White (on J1)

Black Black (on J1)

Do NOT turn on the Breaker. LEAVE IT OFF!

Table 1: Connect High Voltage to D9124