Safety Considerations
66 7750 SR-a4 and SR-a8 Installation Guide
3. The flexible cord must be a minimum Type SVT or equivalent, #18 AWG,
3-conductor. The wall plug must be a two-pole (3-pin) grounding type with a NEMA
6-15P (15 A, 250 V) configuration. For 100-120 VAC systems, the flexible cord must
be Type SVT or equivalent, #16 AWG, 3-conductor.
4. The appliance coupler, flexible cord, and wall plug must bear a “T” mark and
registration number in accordance with the Japanese Dentori Law. The flexible cord
must be Type VCT or VCTF, 3-conductor, 0.75 mm2 conductor size. The wall plug
must be a two-pole grounding type with a Japanese Industrial Standard C8303 (15 A,
125 V) configuration. For 100-120 VAC systems, the flexible cord must be Type
VCT or VCTF, 3-conductor, 1.25 mm
2
conductor size.
Fan Tray
For a horizontally mounted 7750 SR-a chassis, the cooling system must have at least
3 in. (7.6 cm) of clearance on each side of the rack to ensure adequate air intake and exhaust
and at least 20 in. (50.8 cm) in the front for installation and maintenance access.
The fan tray must be in place before the chassis is powered up.
Table 30: Common Grounding-Type (Earthing) Power Cord Descriptions
Country/Plug Description Specifications
Continental Europe:
• CEE7 standard VII male plug
• Harmonized cord (HAR marking on the outside of
the cord jacket to comply with the CENELEC
Harmonized Document HD-21)
220 or 230 VAC
50 Hz
Single phase
USA/Canada:
• NEMA 6-15P male plug
• UL recognized (UL stamped on cord jacket)
• CSA certified (CSA label secured to the cord)
100-120, 220 or 240 VAC
50 to 60 Hz
Single phase
Japan:
• JIS 8303 male plug
• Carry Japan T-mark approval
100-120, 220 or 240 VAC
50 to 60 Hz
Single phase
United Kingdom:
• BS1363 male plug with fuse
• Harmonized cord
240 VAC
50 Hz
Single phase
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