2755-DD4A A-B Power Board
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IN STOCK2755-DD4A A-B Power Board
Bonding and Grounding the Chassis With solid-state controls, proper bonding and grounding helps reduce the effects of emi and ground noise. Also, since bonding and grounding are important for safety in electrical installations, local codes and ordinances dictate which bonding and grounding methods are permissible. For example, for U.S. installations, the National Electrical Code (NEC) gives you the requirements for safe bonding and grounding, such as information about the size and types of conductors and methods of safely grounding electrical components. Equipment-Grounding Conductor — In addition to making good connections through each bolt or stud, use either 1-inch copper braid or 8 AWG minimum stranded copper wire to connect each chassis, enclosure and central ground bus mounted on the back-panel. Figure 3 shows ground-bus connection details.
Figure 4 shows enclosure-wall ground connection details. Use a steel enclosure to guard against emi. If the enclosure door has a viewing window, it should be a laminated screen or a conductive optical substrate to block emi. Do not rely on the hinge for electrical contact between the door and the enclosure; install a bonding wire.
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