Timeline for Appropriate installation for a detached structure electrical sub panel?
Current License: CC BY-SA 4.0
12 events
| when toggle format | what | by | license | comment | |
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| Oct 7, 2020 at 23:57 | comment | added | ThreePhaseEel | @Ecnerwal -- yeah, metal well casings are right up there with Ufers in being amazing grounding electrodes as I understand it, and yes -- definitely worthwhile in any pour as long as you aren't in an awkward situation where everything's atop poly (which ruins all your work) | |
| Oct 7, 2020 at 23:43 | comment | added | Ecnerwal | Pretty much bothering to connect a cable to your rebar, and ideally connect your rebar to the rest of your rebar (which you want to do for structural reasons anyway.) Your concrete and/or rebar suppliers should be familiar with what's needed - I think it's 4AWG cable and a connector suited to the job. Which is why it's something you should always do when pouring concrete - so little extra investment, for the best grounding electrode. | |
| Oct 7, 2020 at 23:24 | comment | added | D A | my plan is to lay steel mesh and then #4 rebar spaced making 3' squares and all this raised 1" off the ground with small concrete couches that I have made. I guess I need to understand more of what an Ufer ground is. | |
| Oct 7, 2020 at 17:23 | comment | added | Ecnerwal | Too bad the well casings appear to be PVC. My 100 foot x 8 inch steel ground rod is "da bomb" (but I also have 5 rods and a bunch of cable below 3 feet ;-) | |
| Oct 7, 2020 at 17:08 | comment | added | Harper - Reinstate Monica | @Ecnerwal I think OP was just thinking of a normal copper ground rod set into the ground, installed before pour... yes an Ufer will engage the entire re-rod network. | |
| Oct 7, 2020 at 16:40 | comment | added | Ecnerwal | And if there isn't add some. Concrete is expensive, steel is cheap, and steel makes concrete so much stronger... An 8 foot rod is not sufficient - you need 20 feet for a concrete encased electrode. So one hunk of full-length rebar is "adequate" but having your rebar properly tied to the rest will involve more than that one hunk of rebar in the system. | |
| Oct 7, 2020 at 16:33 | history | edited | Harper - Reinstate Monica | CC BY-SA 4.0 |
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| Oct 7, 2020 at 16:29 | comment | added | Harper - Reinstate Monica | @DA If there will be any steel re-rod in the pour, then by all means have them provide you an Ufer ground. That is the best ground rod in the world. Never do a pour without Ufers! | |
| Oct 7, 2020 at 10:26 | vote | accept | D A | ||
| Oct 7, 2020 at 10:26 | vote | accept | D A | ||
| Oct 7, 2020 at 10:26 | |||||
| Oct 7, 2020 at 10:25 | comment | added | D A | I’ll remove the existing and pull a new 4-4-4-8 feed. And I’ll go with a 200amp service panel and nix the outside shutoff. And I’ll also get an 8’ bare copper ground rod in the slab before the pour. | |
| Oct 7, 2020 at 1:49 | history | answered | Harper - Reinstate Monica | CC BY-SA 4.0 |