Circuit breaker and power outlet requirements

About the requirements

If your equipment is mounted in a rack, the total number of circuit breakers required for your equipment is based on the current draw.

Attention
The circuit breakers you are using should be connected only to the equipment. Overloading circuit breakers can lead to tripped breakers or power brownouts that can cause system errors.

Typical AC power breaker requirements

The following illustration displays the redundant power configuration of four DS14 disk shelves and one storage appliance. In this example, two 20A circuits at 200-240V AC (four disk shelves and one storage appliance per circuit) are required.

The conditions stated in the following illustration might not meet the requirements of your site. Use this manual to determine the requirements for your hardware.

Attention
Each storage appliance and disk shelf must have both a primary power supply and a redundant power supply.

Attention
The total current draw should not exceed 80 percent of the circuit breaker's rated service value (that is, 16A RMS for a 20A circuit breaker and 24A RMS for a 30A circuit breaker).

System cabinet power cord plugs

The following table lists system cabinet power cord plugs.

Region	Power cord	Plug
U.S.A. Canada	NEMA L6-30 North America NEMA L6-20 North America	Note NEMA L6-20 is slightly smaller in dimension than the NEMA L6-30
Europe Asia Central America South America	International IEC309-30 International IEC309-20	Note IEC 309-20 plug is slightly smaller in dimension than IEC309-30.
Australia New Zealand	Australia AS/NZS3123-20

Region

Power cord

Plug

Socket View

U.S.A.

Canada

NEMA L6-30
North America

NEMA L6-20
North America