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Cast coil transformer and an encapsulated transformer
July 30, 2025

Cast-Resin Transformers: Encapsulated & Cast Coil

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

Parts
Maddox NECA Ambassador
July 25, 2025

Maddox Named NECA Ambassador sponsor

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
transformer core displaying harmonics
July 23, 2025

Guide to Zig-Zag Transformers: Grounding & Harmonic Mitigation

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

Guide to Buck-Boost Transformers

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
Padmount transformer spade extensions
June 20, 2025

Guide to Spade Extensions

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

Parts
Transformer graphic with humming noise visual
June 16, 2025

Why Transformers Hum

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

Guide to Installing Transformer External Sample Ports

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

How To's
An old padmount transformer in an aging grid.
June 4, 2025

Increased Transformer Demand and Aging Grids

America's grid faces a dual threat: aging transformers and surging demand. Learn how this impacts your projects and how to plan ahead.

News
padmount transformer American flag
May 22, 2025

Build America, Buy America Act Compliant Transformers

Understand the basics of the Build America, Buy America Act and its potential effects on the transformer industry.

News
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