Grounding Rod

[cwinans]

I need to drive a grounding rod for the purpose of grounding flammable liquid stored in a 55gal drum and I need to know what is the minimum depth of the grounding rod?

 

[don_resqcapt19]

Re: Grounding Rod

Why do you need to ground this drum? Bonding of the transfer sysem before staring a transfer would make sense to me. Grounding of the drum does not make sense to me.
Don

 

[kqresq]

Re: Grounding Rod

2002 NEC 250-53G. "The electrode shall be installed such that at least 2.44 m (8ft) of length is in contact with the soil."

 

[cwinans]

Re: Grounding Rod

Don, The drum is considered to be temporary storage. I need to ground the drum and then bond between the drum and the recieveing container. I was under the impression that the contact need only be 4-5ft.

 

[don_resqcapt19]

Re: Grounding Rod

cwinans,
I still don't see any reason to ground the drum. What would grounding the drum accomplish?

kqresq,
This is not an NEC required grounding electrode, so Article 250 does not apply.

Don

 

[pierre]

Re: Grounding Rod

Hello cwinans,

I agree with Don, call the fire marshall and pose your question to him

Good luck,

Pierre

 

[cwinans]

Re: Grounding Rod

OSHA Code 1910.107(e)(9) requires that - "Whenever flammable or combustible liquids are transferred from one container to another, both containers shall be effectively bonded and grounded to prevent discharge sparks of static electricity." - I've been sited on this standard and was told that the answer to my question was located in the NEC.

 

[don_resqcapt19]

Re: Grounding Rod

The NEC does not cover this application. The proper bonding will prevent the static sparks. Grounding may not, in itself, prevent the static sparks. I think this is another case of problems with the words "grounding" and "bonding".
Don