Hypertherm HyPerformance HPR400XD, Instruction Manual

Page: 89 / 355

InstallatIon
HPR400XD Auto Gas – 806160 3-51
line disconnect switch
The line disconnect switch serves as the supply-voltage disconnecting (isolating) device. Install
this switch near the power supply for easy access by the operator.
Installation must be performed by a licensed electrician and according to applicable national
and local codes.
The switch should:
• Isolate the electrical equipment and disconnect all live conductors from the supply
voltage when in the “OFF” position
• Have one “OFF” and one “ON” position clearly marked with “O” (OFF) and “l” (ON)
• Have an external operating handle capable of being locked in the “OFF” position
• Contain a power-operated mechanism that serves as an emergency stop
• Have slow-blow fuses installed for the proper breaking capacity (see table above).
Main power cable
Wire sizes vary based on the distance of the receptacle from the main box. The wire sizes listed in the table above were
taken from the National Electric Code 1990 handbook, table 310.16 (USA). Use a 4-conductor Type SO input power
cable with a conductor temperature rating of 90° C (194° F). Installation must be performed by a licensed electrician.
SWITCH BOX
18