EMP Whole-House Ferrites

These EMP whole-house ferrites are made of a special high-frequency material uniquely modified to help prevent high-current saturation.

A ferrite is clamped around the insulated incoming power wires in your breaker panel. Most homes require three ferrites, but four may be needed.

Installing EMP Whole-House Ferrites

We recommend a three-step approach to home protection.

Step 1: Install custom high-saturation ferrites over your incoming power wires. Normal ferrites will not work well due to current saturation. The units sold here are individually modified to increase saturation levels. These specific high-saturation snaps serve as a robust defense against electromagnetic disturbances. By installing these on the main service entrance, you mitigate high-frequency energy before it enters your residence. Note: Most homes require three units. Some homes with four wires need four. Order now while in stock.

Typical installation shown below. Always consult instructions and have a professional electrician do the installation for safety. Ferrite dimensions: Inner Diameter 0.72, Outer Diameter 1.5, Length 1.9. Ensure the ferrites close tightly around the insulation for maximum inductive performance. The high-saturation material is critical because standard cores often saturate under normal AC loads, rendering them ineffective during an actual surge event. Our modified ferrites maintain their permeability under load.

Step 2: Install a quality whole-house surge protection device. This device acts in tandem with the ferrites to shunt excess voltage to the ground. While the ferrites suppress high-frequency transients, the surge protector handles the voltage spikes. This combination provides a multi-layered shield for your electrical system. We recommend choosing a device with a fast response time and high joule rating for optimal results alongside our custom ferrite snaps.

Step 3. Install smaller broadband ferrites around power cords of sensitive electronics. This final layer addresses any residual energy that might be coupled onto internal wiring. Use these on computers, televisions, and smart appliances. By filtering energy at both the service entrance and the individual device, you ensure a comprehensive protection strategy. These broadband units complement the heavy-duty service entrance protection provided by the primary components.