Installation 2
Series N8700 User’s Guide 21
Connecting the Line Cord
WARNING
SHOCK HAZARD The power cable provides a chassis ground through the
ground conductor. Be certain that the power cable has the ground conductor
connected to earth ground at the source and instrument AC input connector.
FIRE HAZARD Use only the power cable that was supplied with your
instrument. Using other types of power cables may cause overheating of the
power cable and result in fire.
WARNING
CONNECTION TO AC SOURCE The power supply must be connected to the
AC mains through a protective device such as a circuit breaker or fuse with
ratings as follows:
For single-phase models: 30A maximum per phase
For 3-phase models: 20A maximum per phase
CAUTION
Connection of either a 3.3 kW or 5 kW power supply to an AC power source
must be made by a qualified electrician in accordance with local electrical
codes.
The POWER on/off switch is not the main disconnect device and does
not completely disconnect all circuits from the AC mains. A
disconnect device, either a switch or circuit breaker for permanent or
multi-phase configurations must be provided in the final installation.
The disconnect device must comply with UL/CSA/EN 61010-1
requirements. It shall be in close proximity to the equipment, shall be
easily accessible, and shall be marked as the disconnect device for
this equipment. The disconnect device must meet the input ratings
requirements listed on the INPUT RATING label located on the top
cover of each unit. Refer to “AC Input” In Appendix A for details.
One of the following unterminated power cables is provided with
each unit. If required, connect an appropriate locking-type power
plug to the end of the power cable.
Cable Option/Part no. Description Rating Wire Size Length Approvals
OPT 831, p/n 8121-1949 3.3kW single-phase 300V, 25 A, 60°C 3 x 10 AWG
Note1,3
2.5 m UL/CSA
OPT 832, p/n 8121-1331 3.3kW single-phase 250V, 32 A, 60 °C 3 x 4 mm
2 Note1
2.5 m Harmonized
OPT 861, p/n 8121-1946
3.3kW/5kW 3-phase
(190-240 VAC nominal)
300V, 25 A, 90 °C 4 x 10 AWG
Note2,3
2.5 m UL/CSA
OPT 862, p/n 8121-1948
3.3kW/5kW 3-phase
(380-415 VAC nominal)
450V, 20 A, 70 °C 4 x 2.5 mm
2 Note2
2.5 m Harmonized
Note 1: 2-wire plus one green/yellow safety ground conductor
Not
e 2: 3-wire plus one green/yellow safety ground conductor
Not
e 3: 10 AWG corresponds to 4mm
2
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