How long is the grounding length for the primary distribution box
The only legal ground rod must be installed a minimum of 8-foot in the ground. Grounding of the units: Attach a ground wire from one of the threaded studs (A) at the bottom of the housing, to the mounting plate (B). Today, we're diving deep into the world of distribution box grounding, breaking down the standards, and shining a light on those sneaky mistakes that even experienced electricians sometimes make. The National Electrical Code (NEC) provides clear guidelines for ground wire sizing through Table 250. 122, but understanding how to apply these requirements correctly can make the difference between a safe installation and a costly code violation. For proper operation of arresters and needs to be as SHORT as possible Lead length for ground lead in white which is excessive.
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