Attach a ground wire from one of the threaded studs (A) at the bottom of the housing, to the mounting plate (B). Preparation: First, you need to prepare some necessary tools, including grounding wire, grounding rod, voltmeter, insulating gloves and insulating tools. Each DISTRIBUTION BOX and controller must be grounded. 26 mm 2 (10 AWG) ground wire must be used, and in all other markets a 6 mm 2 must be used. Whether you're a seasoned pro or just starting out, this comprehensive guide will give you practical. The grounding system provides a low-impedance path for fault current and limits the voltage rise on the normally non-current-carrying metallic components of the electrical distribution system. On average, you'll spend a few hundred dollars on grounding. The correct connection method of Distribution box grounding wire mainly includes the following steps: 1.
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