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In the National Electrical Code (NEC) Section 250-130, the focus is on the proper connections of equipment grounding conductors. This section emphasizes the importance of ensuring that the grounding conductors are securely connected to avoid any potential safety hazards associated with electrical faults. The connections must be tight and secure to maintain a low-resistance path for fault currents, which helps to prevent electric shock and fire risks.

Good connections are crucial for grounding systems since they help maintain the effectiveness of grounding by reducing the likelihood of connection failures over time due to corrosion or loosening. By following the guidelines outlined in this section, electricians ensure that the grounding system is both reliable and safe for the electrical installation. The other aspects, such as insulation, protection, and support of grounding conductors, while important in the overall context of electrical installation, are not the primary focus of Section 250-130 in terms of grounding conductor connections.