Hypertherm Powermax190c Service Manual - Manual (Page 24)

SPECIFICATIONS
powermax190
c Service Manual
2-5
11-99
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.
Cut cord
here
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