grounding electrode location

[Shimmy]

Bare (tinned copper) is fine. At least #4, #2 if you can afford it.

 

[John Frum]

Bare (tinned copper) is fine. At least #4, #2 if you can afford it.

My concern with this is melting the wire in the trench in case of a lightning strike.

 

[Shimmy]

My concern with this is melting the wire in the trench in case of a lightning strike.

If it is not connected to air terminals that is not an issue.

 

[John Frum]

If it is not connected to air terminals that is not an issue.

What is an air terminal?

 

[John Frum]

What is an air terminal?

How Do Air Terminals Work? - Kingsmill Industries

Air Terminals are the metaphorical tip of the iceberg in a lightning protection system. Despite being relatively small in appearance, air terminals protect buildings and residential areas during thunderstorms by acting as the interception point for lightning strikes.

kingsmillindustries.com

 

[12VoltInstalls]

My concern with this is melting the wire in the trench in case of a lightning strike.

What?!

 

[Zwy]

User has a panel array, power house, and house all in a straight line.

panel_array---50'---power_house---80'---house

The plan is to have the n-g bond in the power house and the grounding electrode will also be in the power house.

Is the voltage gradient over 80' between power house and house an issue?

@FilterGuy
@NorthTown2022

A separate structure is required to have a grounding electrode. One is needed at the power house and one at the house.

The house will not have N-G bond, the power house will have N-G bond.

 

[Zwy]

Sorry I wasn't clear. I'm talking about the voltage gradient between the house electrical system and the earth it sits on.
The house electrical system will be referenced to the earth at the grounding electrode 80' away from the house.

There could be a voltage gradient between earth at the house and the earth at the grounding electrode.

Won't be a gradient as NEC requires a EGC be run to house grounding busbar and the grounding electrode at the house.

If you don't follow the "rules", then yes, you will have a voltage gradient.

 

[Zwy]

@John Frum is referring to my installation.

With multiple out buildings I am understanding that figure 3 'best' option will be most suitable in my situation. Is there a rule to dictate the gauge of copper conductor used to daisy chain grounding electrodes? Also I suppose the copper conductor should be insulated?

In my state, #6 bare copper in the trench.