Hypertherm HSD130 HySpeed Plasma - Manual (Page 106)

INSTALLATION
3-38 HySpeed HSD130 RHF Instruction Manual
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).
Power cable
Cable sizes vary based on the distance of the receptacle from the main box. Use a 4-conductor Type SO input power
cable with a conductor temperature rating of 60° C (140° F). Installation must be performed by a licensed electrician.
9
Power requirements
General
All switches, slow-blow fuses and power cables are customer-supplied and must be
chosen as outlined by applicable national and local electrical-codes. Installation must be
performed by a licensed electrician. Use a separate primary-line disconnect switch for
the power supply.
FUSE
SWITCH BOX
Note: Cable AWG recommendations taken from table 310-16 of the National Electric Code handbook (USA).
Recommended cable size
for 15 m (50 feet)
Input Rated input current Recommended maximum length
voltage Phase @ 19.5 kW output slow-blow fuse size Rated for 60° C
200/208 VAC 3 62/58 amps 85 amps 30 mm 2 (3 AWG)
220 VAC 3 56 amps 80 amps 30 mm 2 (3 AWG)
240 VAC 3 52 amps 65 amps 26 mm 2 (4 AWG)
400 VAC 3 32 amps 40 amps 10 mm 2 (8 AWG)
440 VAC 3 28 amps 35 amps 8 mm 2 (8 AWG)
480 VAC 3 26 amps 35 amps 8 mm 2 (8 AWG)
600 VAC 3 21 amps 30 amps 6 mm 2 (10 AWG)