APC AP9621 User Manual download pdf (Page 12)

CHAPTER 3: INSTALLATION

Wiring the Step-Down Transformer

1. For cord connected installations:

Plug the input power cord  into the outlet  receptacle.

2. For hardwired installations:

• Verify that all branch circuit (mains)

are de-energized, and locked out

before installing cables or making

connections.

• Wiring by a licensed electrician is

required.

•

Check national and local codes

before wiring.

• Use 10-gauge (6 mm

) wire.

3. Make sure the input circuit breaker  is OFF.

a. Remove the input-wiring access panel .

b. Disconnect the power cord from terminal block .

c. Connect the new wires  to the terminal block.

d. Each terminal is labeled. The Step-Down

Transformer requires a 200 or 208 VAC single-

phase input from a power source with a minimum

branch breaker rating of 30 amps.

e. Inspect the connections.

f. Attach the new access panel  provided in the

literature kit.

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APC AP9621 User Manual Page 12