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Figure 10-2. Arc currents through the process power supply return (existing ground) develop a voltage that appears in series |
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|  DOE-HDBK-1092-2004
Figure 10-2. Arc currents through the process power supply return (existing ground) develop
a voltage that appears in series with the process controls because they share that return.
Figure 10-3. It has been possible to install a separate return conductor for the power supply. The arc
currents no longer appear in series with the process controls. There is no conductive coupling.
10-17
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