How Can I Verify the Performance of the NCB Pro?Updated 6 hours ago

Easily test your NCB Pro’s effectiveness by verifying these four key functions: stopping ground current, filtering dirty electricity, reducing magnetic fields, and maintaining a safe ground-fault path.

1. Test Current Elimination on Grounding Conductor

Tools needed: Fluke 287 multimeter with micro‑amp capability, amp clamp

1. Connect your Fluke 287 in series with the equipment grounding conductor (EGC) feeding a known source, like a well pump.

2. Observe the current before installing the NCB Pro—this reveals any stray (foreign) current flowing through the EGC.

3. Install the NCB Pro inline (close to the source or in the main panel). Re-measure the EGC current.

4. A significant drop indicates the NCB Pro is successfully blocking contact/foreign current.

2. Confirm Dirty‑Electricity Reduction

Tools needed: Fluke 287 multimeter with Hz/mVolts function

1. With the NCB Pro installed, use the multimeter on millivolt or frequency (Hz) mode on the EGC.

2. Look for higher-frequency “dirty electricity” readings before and after installation.

3. A sharp reduction confirms effective filtering of dirty electricity.

3. Measure Magnetic‑Field Reduction

Tools needed: Sensitive gauss meter (e.g. NFA 1000), amp clamp

1. Map magnetic‑field levels near sleeping or living areas both before and after installing the NCB Pro.

2. Use an amp clamp on the grounding conductor to confirm current flow is reduced.

3. A noticeable drop in magnetic readings shows the NCB Pro is effectively reducing field emissions from the grounding circuit.

4. Verify Ground‑Fault Protection

Important: This is a high-risk test and should only be done by a qualified electrician.

1. With EGC isolated, use your Fluke to test resistance through the NCB Pro—it should show ≥ 1 MΩ, confirming the internal resistor is functioning .

2. Power down the circuit and tie hot to the ground conductor (EGC) downstream of the NCB Pro.

3. Power the circuit and observe the breaker—it should trip immediately, validating the NCB Pro’s fault path function.

Why These Tests Matter

• Current elimination prevents harmful stray voltage from reaching you.

• Dirty‑electricity filtering ensures a cleaner grounding path.

• Magnetic-field reduction minimizes EMF exposure in living spaces.

• Ground-fault protection ensures safety if a fault energizes the grounding conductor.

FAQ

Q: Do I need a professional for testing?

A: Measuring current, dirty electricity, and magnetic fields can be done by a knowledgeable DIYer with the right tools. However, ground-fault testing must be done by a qualified electrician due to safety risks.

Q: What tools should I use?

A: Use a Fluke 287 (or 289) for current and frequency measurements, a gauss meter like the NFA 1000 for magnetic fields, and an amp clamp accessory   .

Q: How often should I test the NCB Pro?

A: After initial installation, retest if you change grounding circuits (e.g., add another pump) or reassess your panel wiring.

Conclusion

Following these four tests helps ensure your NCB Pro is working as intended—blocking harmful ground-borne currents, filtering noise, reducing magnetic fields, and ensuring a safe fault response. If any test doesn’t pass, double-check installation, re-test another circuit, or consult an electrician or qualified Building Biologist.

For personalized assistance, use your included 30-minute consulting session with the inventor or contact SYB Support.