HP Integrity Superdome SX1000 Safety and Regulatory Information, Eighth Editio - Page 8

Safety and Regulatory Information Acoustics (Germany) Acoustics (Germany) Acoustic Noise (A-weighted Sound Pressure Level LpA) measured at the bystander position, normal operation, to ISO 7779. LpA = 65.1 dB. IT Power System To ensure safe operation of this equipment, connect only to an AC power source that contains a protective earthing (PE) conductor. IT Power Systems do not provide adequate grounding and are not recommended. TT, TN-C, and TN-C-S Power Systems These products should not be connected to power systems that switch open the return lead when the return lead also functions as the protective earth (PE). A separate PE ground wire must be connected to the equipment at the designated PE terminal tie point. High Leakage Current WARNING Do not connect the supply before establishing an adequate ground (earth) connection. Installation Conditions See installation instructions before connecting this equipment to the input supply. WARNING The equipment must be provided with a proper AC protective earth (PE) ground connection. Recommended Wire Sizes Table 1-1 shows the wire size requirements for conductors in power supply cords (Extracted from IEC 60950, Table 11). 8 Chapter 1