How Do I Set Up My NCB Plug?Updated 18 minutes ago

Setting up the NCB (Nuisance Current Blocker) Plug takes two steps.

Step 1: Plug the NCB into a grounded outlet

Plug the NCB into any grounded 3-prong outlet that is connected to a breaker. This matters because the NCB is designed to keep an effective ground-fault path. If an electrical cord is ever cut, or something else goes wrong and your grounding product becomes electrified, the NCB sends that current back to trip the breaker right away, protecting you.

Tip: For better fault protection, you can install a GFCI (ground-fault circuit interrupter) in the outlet, or upstream on the same circuit as the NCB. Ask your electrician or a certified building biologist for advice.

Step 2: Plug your grounding product into the NCB

Plug your grounding mat, grounding sheets, bed canopy, or other personal grounding product into the grounding prong hole of the NCB.

That's it. You're set up.

Test it and adjust the dial

The preset dial setting is usually enough to stop current and electric fields from reaching your grounding product. Depending on your home's wiring, small currents can sometimes still pass through. You can fix this by adjusting the blue dial inside the NCB.

• How Can I Verify That the NCB Plug Is Working?
• How Do I Use the Dial on the NCB, and How Do I Know if it's Working?

Important notes

• Use the NCB with grounding products only, not appliances. Plugging an appliance into the NCB is not a hazard, but measurements show better results without it. To reduce contact current, dirty electricity and electric fields from your appliances, make sure they are solidly grounded on their own circuit.
• Make sure your home is properly grounded. Have a certified electrician confirm that your home's wiring is grounded, and that your appliances are grounded to a breaker. See Do I Need an Electrician to Find Out if My Home is Grounded?
• The NCB does not fix wiring code violations. If you're not sure whether your wiring meets the National Electrical Code (NEC), have a building biologist or certified electrician check it.

More help

For more information and installation videos, visit the NCB Welcome Page or the website of NCB inventor Andrew McAfee, HomeEMFTracing.com. If you have any questions, please contact us.