what size and deep

[timmermeier]

What size and deep and wire do i need for a ground plate , for 200 amp service. ( home ) ?/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

 

[Dennis Alwon]

here you go

(7) Plate Electrodes. Each plate electrode shall expose not
less than 0.186 m2 (2 ft2) of surface to exterior soil. Electrodes
of bare or electrically conductive coated iron or steel plates
shall be at least 6.4 mm (1∕4 in.) in thickness. Solid, uncoated
electrodes of nonferrous metal shall be at least 1.5 mm
(0.06 in.) in thickness.

(H) Plate Electrode. Plate electrodes shall be installed not
less than 750 mm (30 in.) below the surface of the earth.

 

[don_resqcapt19]

Have you looked at Part III of Article 250?

 

[LarryFine]

Each plate electrode shall expose not
less than 0.186 m2 (2 ft2) of surface to exterior soil.

Is that area per side or total area?

 

[infinity]

Is that area per side or total area?

Total for both sides and the edges too.

 

[Dennis Alwon]

Is that area per side or total area?

My guess is total area

 

[tom baker]

I say it’s a 1 sq ft plate. Could be smaller if the surface area is deducted

 

[LarryFine]

So a 1ft sq plate would qualify (as long as it has two sides, of course.)

 

[Hv&Lv]

So a 1ft sq plate would qualify (as long as it has two sides, of course.)

6 sides?

 

[infinity]

So a 1ft sq plate would qualify (as long as it has two sides, of course.)

Yup could be smaller too depending on the thickness.

 

[LarryFine]

Yup could be smaller too depending on the thickness.

Hmm. Texture, too.

 

[electrofelon]

Is a spherical plate allowed? They make a cad weld mold for a 9.6" dia sphere?

 

[PaulMmn]

So a 1ft sq plate would qualify (as long as it has two sides, of course.)

You using Moebius plates, with only 1 side?

 

[LarryFine]

You using Moebius plates, with only 1 side?

 

[PaulMmn]

View attachment 2571479

Uh, I believe that's just a standard 2-sided loop... unlike this one:

 

[LarryFine]

Uh, I believe that's just a standard 2-sided loop...

I believe you're correct. I chose that pic because, even though it's actually wood, it kinda looks like copper.

 

[timmermeier]

here you go

(7) Plate Electrodes. Each plate electrode shall expose not
less than 0.186 m2 (2 ft2) of surface to exterior soil. Electrodes
of bare or electrically conductive coated iron or steel plates
shall be at least 6.4 mm (1∕4 in.) in thickness. Solid, uncoated
electrodes of nonferrous metal shall be at least 1.5 mm
(0.06 in.) in thickness.

(H) Plate Electrode. Plate electrodes shall be installed not
less than 750 mm (30 in.) below the surface of the earth.

1.5 mm is less than 1/16 of a inch . pretty thin ?

 

[PaulMmn]

I believe you're correct. I chose that pic because, even though it's actually wood, it kinda looks like copper.

Well, it -is- a nice job of warping wood!