All distribution boxes must be grounded

Not all distribution boxes are inherently grounded; grounding depends on the box type and installation standards, with metal boxes typically requiring direct grounding and plastic boxes relying on connected equipment grounding conductors.Grounding RequirementsMetal distribution boxes must always be grounded to ensure safety. This involves connecting a ground wire from the box to a central grounding point or grounding system, which helps safely channel fault currents into the earth, protecting both personnel and equipment from electric shock and damage . In the US, a 10 AWG ground wire is commonly used, while other markets may require a 6 mm² wire . Proper grounding ensures low resistance (typically