Datasheet

APC PDU (AP9553 and AP9558): Installation Manual 5

Before You Begin

Safety and

grounding

information

Please read the following information before installing or

operating your

APC Power Distribution Unit (PDU):

• This

PDU is intended for indoor use only.

• Do not install this

PDU where excessive moisture or heat

is present.

• Never install any wiring, equipment, or

PDUs during a

lightning storm.

• Plug this

PDU into a three-wire, grounded power outlet

only. The power outlet must be connected to appropriate

branch circuit/mains protection (fuse or circuit breaker).

Connection to any other type of power outlet may result

in a shock hazard.

• Use only the supplied brackets for mounting.

• Do not use extension cords or adapters with this

PDU.

• Do not work alone under hazardous conditions.

• Check that the power cord, plug, and socket are in good

condition.

• To reduce the risk of electric shock when grounding

cannot be verified, disconnect the

PDU from the power

outlet before installing or connecting equipment.

Reconnect to the power outlet only after making all

connections.

• Equipment must have a protective earth connector which

carries the leakage current from the load devices

(computer equipment). Do not exceed a total leakage

current of

3.5 mA.

Electr

cal

Hazard