Mac Spiller

CCO

Mac brings over a decade of experience to his current role as the CCO of Maddox. His day-to-day work involves finding transformer solutions for customer problems across the country.

Expertise

Engineerin
Technical Training

Written Work

Maddox transformer tech working on a transformer

February 22, 2022

Deciding between transformer repair or replacement? Learn when to repair, rewind, rent, or replace your transformer to reduce downtime.

How To's

June 6, 2023

A transformer load break switch (LBOR switch) turns the transformer's power on or off. Learn about 2 and 4-position switches and their different types.

How To's

Schematics of live front and dead front bushings

November 26, 2025

A bushing allows a conductor to pass through the tank wall of a transformer without making electrical contact. Learn about live front and dead front bushings.

How To's

Maddox transformer tech welding transformer

February 13, 2020

Is buying a remanufactured transformer safe? Should I just buy new? Remanufactured transformers are a great option and can be trusted to operate safely.

Parts

November 1, 2022

Copper or aluminum transformer windings, which is right for your project? Compare efficiency, cost, weight, strength, and lifespan to find out which winding material makes the most sense for your application.

How To's

Green liquid filled padmounted transformer roped off for testing

November 15, 2022

Overview of the common tests performed on transformers, including Winding Resistance, Megger, Transformer Turns Ratio, Load-Loss, Leak Tests, and others.

How To's

Mac Spiller

CCO

Written Work

Should I Repair or Replace My Transformer?

Guide to Transformer Load Break Switches

The Live Front vs. Dead Front Bushing

Benefits and Risks of Buying Remanufactured Transformers

Aluminum vs. Copper Windings in Distribution Transformers

Guide to Transformer Testing Standards