Tinned Strander Copper Ground Conductor
Tinned Strander Copper Ground Conductor
(OP)
I am doing a raised floor installation and the drawing calls out for a 2/0 tinned stranded copper ground conductor. My question lies in the chapter 9 table 8 of the NEC which has the dc resistance of the conductor with .096 ohms/kft and .3 ohms/kft. My understanding is the coated column refers to tinned conductors which protect from corrosion I assume but the resistance is just so much higher. For a solidly grounded system especially with sensitive electronics wouldn't you want the lowest resistance to ground? Is there something/advantage I am missing with the tinned ground conductor.






RE: Tinned Strander Copper Ground Conductor
RE: Tinned Strander Copper Ground Conductor
Recheck again. I believe the 0.03 refer to Ohm/km
The correct value should be the next column, 0.101 ohm/kft.
The resistance difference should be less than 5%.