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3.4
Electrical Connections
Warning
Be sure the welder is unplugged and the power switch is
in the OFF position before making any electrical
connections.
3.4.1 AC Power Connection
The welder requires a single-phase, grounded 3-wire, 50-60Hz, AC power
source.
Warning:
To prevent the possibility of an electrical shock always
plug the welder into a grounded power source.
Check the data tag on the welder's back panel to determine whether you
have a 117V (910IW+), a 100/200-245V (9051W+, 910IW+) or a 200-245V
(920IW+) welder.
117V welders have NEMA 5-15P plugs installed which require NEMA 5-15R
receptacles; 100/200-245V welders require plugs; 200-245V welders are
shipped with loose NEMA L6-20P plugs which require NEMA L6-20R
receptacles, if used.
If your local AC mains voltage differs from the voltage circled on the line
cord tag, you will have to set the transformer taps, as described in
Section 3.4.2. You may also require other plugs, conforming to local
codes.
3.4.2 Setting Taps
Caution:
Do not run multi-voltage welders on a 115V tap.
The transformers on all welders other than 117V welders contain voltage
selection taps allowing you to match the welder to your AC source
voltage. Use the following procedure:
1. Using a voltmeter, measure the AC supply voltage at the receptacle
and record the value.
Installation
3-4
900IW+
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