HP LH4r HP Netserver LH 4r Rack Cabling Guide - Page 52
Component, Receptacles Required
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Chapter 3 Cabling Reference Information Table 3-3. Receptacles Needed for Different Units Component Receptacles Required HP NetServer LH 4r two C13 or two 5-15R HP Rack Storage/8 two C13 or use Y-Cable* or Rack Storage/12 All other devices one C13 * Two Y-Cables may be used to connect two HP Rack Storage/8 units to two C13 receptacles. 3. The total power drawn by all components in the rack is accumulated by rack configuration tools, and a second UPS is recommended if wattage of the first is exceeded. 4. The nominal current draw of all components is accumulated, and a second or larger UPS is recommended if wattage of the first is exceeded. 5. The first configuration in the list in Table 3-2 that meets receptacle count, current requirements, and power requirements is recommended by rack configuration tools and supplied, unless the purchaser has over-ridden this choice. 6. (a) When several HP Rack Storage/8 units are in the same rack, use of two wide-ranging 16-amp and one wide-ranging 10-amp PDU (the maximum possible) may not provide sufficient receptacles. In this case, use the Y-cable to connect HP Rack Storage/8 units to the PDUs. (b) When required, a pair of Y-cables are supplied per pair of Rack Storage/8 units. That is, two Y-cables are supplied for two units. (c) Each Y cable connects either the two right power receptacles or the two left power receptacles of a pair of HP Rack Storage/8 units to one receptacle on the PDU. When plugging devices into a PDU, it is important to make sure that the current capacity of the PDU is not exceeded. Table 3-4 shows the current requirements of the common rack mounted devices. 48