Hypertherm Powermax190c Operator Manual - Manual (Page 28)

SETUP
1
powermax
190c Operator Manual 3-3
Grounding Requirements
To ensure personal safety, proper operation and to reduce electromagnetic interference (EMI), the power
supply must be properly grounded:
• The power supply must be grounded through the power cord according to national or local
electrical codes.
• Single-phase service must be of the 3-wire type with a green or green/yellow wire for protective
earth ground and must comply with national or local electrical requirements. Do not use a
2-wire cord.
• Also see Grounding Safety in the Safety section of this manual.
Power Cord Plugs
The 120V power supplies are shipped with a plug on the power cord. The 230V units are shipped without
a plug on the power cord. For the 230V machine, obtain a plug that meets national or local electrical
codes. The plug should be connected to the power cord by a licensed electrician. Also, note that some
120V receptacles may require a plug that is different from the plug on the power cord. To install the
required plug, refer to the figure below. The installed 120V plug and cords must conform to national or
local electrical codes.
1 Power cord plug (120V shown)
• Cut cord close to plug.
2 230V plug
3 To load 1 (brass) terminal
4 To load 2 (brass) terminal
5 To ground (green) terminal
6 Outer shell
7 Cord grip
Strip cord insulation back in order to
separate conductors. Strip conductor
insulation back in order to make good
contact with plug terminals. Make
connections, reinstall outer shell and
cord grip and secure with screws.
Do not overtighten.
1 2
5
7
6
3
4
Cut cord
here