Is Indoor Grounding as Good as Standing Barefoot Outside?
4 min readTL;DR: Key Takeaways
- The earth contact reaches the building’s earthing system: which ends at an electrode or an earthed supply conductor in the ground outside.
- Grass is a variable connection: dry ground and wet ground are not the same thing electrically, and neither is a pair of rubber-soled shoes.
- Indoors is the repeatable one: a wall socket does not depend on the weather, which is the practical reason people choose it.
- Check the socket before you rely on it: a plug-in tester shows whether the earth contact is connected at all.
Standing barefoot on damp ground connects you to the earth directly. A grounding cord connects you to the earth contact of a wall socket, which runs to the building’s earthing system and from there to an electrode or earthed conductor in the ground. Both end at the same place; the indoor route is the one that works in February.
What does the earth contact in a wall socket connect to?
In a modern European installation it joins the protective earthing conductor of the building, which ends either at an electrode driven into the ground near the property or at an earthed conductor supplied by the distribution network. The arrangements have names — TN-S, TN-C-S, TT — and the differences matter to electricians rather than to shoppers.
What matters here is the destination. It is the ground outside, reached by a copper route instead of by the soles of your feet.
The contact itself carries nothing in normal use. It exists so a fault has a path that is not a person, which is also why every socket tester in our catalogue is designed around checking it.
Is standing on grass electrically different from a conductive sheet?
Yes, in the ways you would expect and some you would not.
- Grass is variable. Damp ground and parched August ground are different connections. So is sand, and so is a tiled balcony.
- Footwear ends it. A rubber or foam sole is an insulator, which is the whole reason the barefoot part of the phrase is doing the work.
- A sheet is consistent. The fabric, the press-stud, the cord and the socket are the same on a wet Tuesday and a dry one.
- A sheet is in the house. Which is the honest practical point, in a climate where standing outside at eleven at night is a brief hobby.
What stops a grounding cord from being dangerous?
Two things, and they are worth knowing separately.
The first is the plug geometry. A grounding adapter connects to the earth contact and to nothing else — there is no path from the live or neutral contacts into the cord.
The second is the cord itself: a built-in ≈91 kΩ ±1% current-limiting safety resistor. If you are comparing cords between sellers, that value and its tolerance are the specification to ask for. We publish ours on every cord and adapter page.
We do not make absolute claims about any of it, and we would be wary of a seller who did. What we can tell you is exactly which contact is used and exactly what is inside the cord.
Does it matter which socket you use?
It matters that the one you use is actually earthed, which is not guaranteed by the socket having the right shape. Older buildings across Europe still have rooms wired without an earth.
- Use a plug-in socket tester matched to your country.
- Test the socket you plan to use, not a different one.
- Read the lamps against the legend printed on the tester.
- If it does not show a correctly earthed socket, ask a qualified electrician before going further.
One limitation to know: a plug-in tester is a wiring check, not a measurement, and it cannot detect an earth bonded to neutral at the outlet.
The part that does the connecting
Type F Grounding Adapter - Europe — €29.00
Connects to the earth contact of a Type C/F Schuko socket. Cords carry a built-in ≈91 kΩ ±1% current-limiting safety resistor.
Related Reading
Frequently Asked Questions
Does the earth contact really reach the ground?
Yes. It joins the building’s protective earthing conductor, which ends at an electrode in the ground or at an earthed conductor supplied by the distribution network.
Is wet grass a better connection than dry grass?
Electrically they are not the same, and damp ground conducts more readily than parched ground. That variability is one practical argument for a fixed indoor connection.
Do shoes stop it working?
A rubber or foam sole is an insulator between you and the ground, which is why the barefoot part of "barefoot outside" is doing the work.
What is inside the cord?
A built-in ≈91 kΩ ±1% current-limiting safety resistor. Its value and tolerance are the specification worth comparing between sellers.
What if my room has no earthed socket?
Use a room that has one, or have an electrician look at the circuit. A longer cord — 4.6 m (15 ft) straight, or a coiled cord out to 6 m (20 ft) — is a reasonable way to reach a better socket.
Simply Grounded.
Still have a question? Read the FAQ
The Grounding Company
The Grounding Company — Grounding bedding and accessories, chosen with care. Simply Grounded.