Juniper EX9251, Hardware Manual, Page: 40 / 217

NOTE: In North America, AC power cords must not exceed 4.5 m (approximately 14.75 ft) in
length, to comply with National Electrical Code (NEC) Sections 400-8 (NFPA 75, 5-2.2) and
210-52, and Canadian Electrical Code (CEC) Section 4-010(3). You can order AC power cords
that are in compliance.
CAUTION: Ensure that power cords do not touch the switch components, block the air
exhaust and access to switch components, or drape where people could trip on it.
Power Requirements for EX9251 Switch Components
IN THIS SECTION
Power Requirements for EX9251 Switch Components | 31
Calculating System Thermal Output | 32
Use the information in this topic to determine the power requirements for your switch.
Power Requirements for EX9251 Switch Components
Table 12 on page 31 lists the power requirements for various hardware components when the switch is
operating under typical and maximum voltage conditions.
Table 12: Power Requirements for Switch Components
Component Power Requirement
at 25°C (Watts;
Typical) Power Requirement
at 55°C (Watts;
Maximum)
Fully loaded switch 240 W 280 W
Table 13 on page 32 lists the power requirements for a fully configured AC-powered switch operating
under typical voltage conditions.
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