jucesanc
Member
- Location
- California, Bay Area
I have a 50,000 BBL tank that is grounded via two ground rods, that are accessible through two ground wells. The tank has instrumentation, lighting, piping, etc. It stores gasoline, so the area is class 1 div 2.
Near the tank (5 feet away from the tank), is an instrumentation terminal box. The box itself is grounded through a separate ground rod, and accessible through its own ground well.
My recommendation is that we bond the ground rod for the terminal box to tank. This is based on my interpretation of NEC 250.50: "All grounding electrodes as described in ..... that are present at each building or structure served shall be bonded together to form the grounding electrode system. Where none ..."
Is my interpretation correct in that the terminal box ground rod should be bonded to the tank?
Near the tank (5 feet away from the tank), is an instrumentation terminal box. The box itself is grounded through a separate ground rod, and accessible through its own ground well.
My recommendation is that we bond the ground rod for the terminal box to tank. This is based on my interpretation of NEC 250.50: "All grounding electrodes as described in ..... that are present at each building or structure served shall be bonded together to form the grounding electrode system. Where none ..."
Is my interpretation correct in that the terminal box ground rod should be bonded to the tank?