Grounding clamps for electrical systems play an importance role in providing a pathway for voltage to flow to earth should there be an electrical problem. The importance of a good grounding system cannot be stressed enough.
Commonly we see a multi-strand copper wire leading from the main electrical panel to a clamp on the main incoming water supply to ground the plumbing. Similarly, the gas line is bonded to the grounding system with this type of clamp and wire too. Unfortunately, the grounding clamps can rust / corrode overtime or simply loosen. As a result, they not longer provide the intended protection.
While the fix may seem simple enough for a DIYer, it cannot be stressed enough that this is not a homeowner fix-it job however, given that stray voltage can be carried on that ground wire. This shock hazard could be fatal
Protect yourself…get it inspected!