Tech Data

Grounding Reactor Selection Table

Select the appropriate grounding reactor by:

  1. Determine the maximum secondary voltage of the welding transformer to be protected.

    See Column 1 of Selection Table.

  2. Determine the ampere rating of the fuse or circuit breaker installed in the primary circuit to protect the welding transformer.

    See Column 2 of Selection Table.

  3. Select type of connection desired.

    See Column 3 of Selection Table.

  4. To request a quote on a single Grounding Reactor, click the "Model Number" link.

    To request a quote on multiple Grounding Reactors, check the "GET QUOTE" box(s) and press the Quote Request button.

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Maximum Secondary Voltage Fuse Ampere Rating Type of Connections Model
Number
Approx KVA Rating at 50% Duty Cycle Required Ground Conductor Size Weight (LBS) Drawing
(PDF)
240V 480V
Up to 24 Volts / 60 Hz Up to 300 Amp #4 AWG Leads RGR 24 / 4-1099 75 150 #4 AWG CU 18 R1474
Up to 28 Volts / 60 Hz Up to 500 Amp #2 AWG Leads RGR 28 / 2-1152 150 300 #2 AWG CU 27 R1474
Up to 34 Volts / 60 Hz Up to 500 Amp #2 AWG Leads RGR 34 / 2-1513 150 300 #2 AWG CU 31 R1474

See NEC Table 250-95 for required ground conductor size in respect to rating of overcurrent device.
The proper sizing, application, installation and wiring of the grounding reactor is the sole responsiblity of the user.