The cable cross-section must be suitable for the maximum input current of the
instrument. The ground cable must have the same cross-section as the phase cable.
The power cords recommended above meet these requirements.
Safety agency requirements dictate that there must be a way to physically disconnect
the ac mains cable from the unit. A disconnect device, either a switch or circuit breaker
must be provided in the final installation. The disconnect device must be close to the
equipment, be easily accessible, and be marked as the disconnect device for this
equipment. It must meet the input ratings requirements listed in the following table.
Keep the ac mains cables as short as possible. The longer the cable, the greater the voltage loss due to
cable resistance.
A Wye-type or Delta-type ac mains distribution is required, provided the correct line-to-line voltage is
applied. An earth-ground to the PE-ground connection through a separate conductor is also required.
Delta-
type
Wye-type
2 Installing the Instrument
42 Keysight MP4300 Series Operating and Service Guide
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