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K rated transformer graphic with wave illustration

August 26, 2025

K-factor rated transformers are designed to endure the heat of harmonics. Explore their components, rating levels, and common uses.

How To's

One of Maddox’s South Carolina Production Facilities

August 12, 2025

For the 7th straight year, Maddox Industrial Transformer earns a spot on the Inc. 5000 list of America’s fastest-growing private companies.

News

Cast coil transformer and an encapsulated transformer

July 30, 2025

Cast coil and encapsulated transformers provide resin-sealed protection and maintenance-free performance for critical applications.

Parts

July 25, 2025

Maddox is now a NECA Ambassador Sponsor. NECA and Maddox work to help electrical contractors get the transformers they need, when they need them.

News

July 23, 2025

Zig-zag transformers offer cost-effective system grounding and harmonic mitigation. Learn what they are, how they work, and when to use them.

How To's

Diagram of Wye winding connected to buck boost transfomers

July 1, 2025

Buck boost transformers offer a low-cost, compact way to adjust voltage by 5–20%. Perfect for HVAC, lighting, and small industrial loads.

How To's

June 20, 2025

Improve the installation flexibility and lug capacity of your transformer using spade extensions.

Parts

Transformer graphic with humming noise visual

June 16, 2025

A transformer hum should be low and consistent. Learn the natural causes for a transformer hum as well as noises that may prompt further investigation.

How To's

transformer external sample kit measurements

June 10, 2025

An external sample port is an excellent way to mitigate the risk of arc flash in routine transformer maintenance.

How To's

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Guide to K-Factor Rated Transformers

Maddox Makes Inc. 5000 List Seventh Year in a Row

Cast-Resin Transformers: Encapsulated & Cast Coil

Maddox Named NECA Ambassador sponsor

Guide to Zig-Zag Transformers: Grounding & Harmonic Mitigation

Guide to Buck-Boost Transformers

Guide to Spade Extensions

Why Transformers Hum

Guide to Installing Transformer External Sample Ports