E
Engineer54
Can't exactly see what type of clamp has been used in your photo, but if it's just a standard/typical pipe earth clamp, then it's not suitable for purpose, only Constant Pressure and Hepworth (think that's the name) clamps that require a tool to secure, are acceptable. 9 out of 10 TN-S cable sheath connections are made via soldered/lead wipe connections, clamps only being retrofitted as or when required!!