Overcurrent Protection Requirements - Oracle Netra SPARC S7-2 Installation Manual

Overcurrent Protection Requirements

Note -
configurations if the facility has a surge protector that limits voltage surges to less than 2000V.
You can, however, install a surge protector if your site requires an additional protector.
Note -
supplies cannot be mixed within a server or within the same rackmounted system.
Related Information
"Physical Specifications" on page 17
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"Electrical Specifications" on page 18
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"Overcurrent Protection Requirements" on page 20
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"Environmental Requirements" on page 22
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"Acoustic Noise Emissions" on page 23
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"Airflow Precautions" on page 24
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Overcurrent Protection Requirements
This product does not provide branch circuit overcurrent protection as defined by the U.S.
NEC. To comply with the U.S. NEC, you must install this product on branch circuits that have
overcurrent protection as defined by Article 240 of the U.S. NEC.
Product power inputs with a current ratings of 16A or less must have a branch circuit, or a
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supplementary overcurrent protection device, rated at no more than 20A.
Product power inputs with current rating of more than 16A must have a branch circuit, or
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a supplementary overcurrent protection device, rated at no more than 160% of the product
input current rating.
Other national or local electrical codes might apply to the installation of this product.
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For the DC input configuration, power is fed to the PSU via customer-provided double-pole
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50A DC circuit breaker.
As a general guideline, overcurrent protection devices should be rated at a minimum of 125% of
the product input current rating in order to provide reliable power under high temperature and
transient voltage disturbance conditions. However, you must consider the characteristics of the
protection device and the applicable electrical codes when selecting the rating of a protection
device for the product installation.
20 Netra SPARC S7-2 Server Installation Guide • January 2017
The server does not require an additional surge protector for the AC power
Converting power supply types (AC to DC or DC to AC) is allowed. However, power