STB Electrical Test Equipment, Inc.

We have a wide selection of the equipment lineworkers need to get the job done, including voltmeters, ground cables, fiberglass hot sticks, and more. If you’re looking for something you don’t see here, we can source it for you. Order and get your equipment.


Decades of Experience in Electrical Test Equipment

Arnold “Stu” Stewart, original founder of STB Electrical Test Equipment, Inc., started his long career working for Western Electro Mechanical Company, “WEMCO” in Oakland. Stu was WEMCO’s instrumental technician for 23 years. Stu was celebrated by his colleagues and customers for customizing products to customers’ requests and needs. Stu eventually began customizing his own products including custom, split core current transformers.

Stu, along with Russell L. Tavare and Kenneth Belfer, incorporated STB Transformer Company, Inc. in 1979. Stu designed and patented his own split core, ST Model in March, 1981. The company grew from there, and after Tavare and Belfer’s departures, Stu’s daughter Patricia A. Tavare, stepped in to assist her father. Pat was fully managing STB by early 1990.

When Stu passed away, his wife Lois continued on as STB’s owner making STB a woman-owned company. In honor of her father, Patricia continued operating and expanding STB with her brother, Jeff Stewart. Pat went on to become the sole owner and President of STB in 2011.

Today, STB continues to be recognized in the industry for providing top-of-the-line, quality products, personalized service and a flawless safety record. Management and staff are working diligently to further expand STB’s products and services offered.

Dedicated to the Best Personal Service

STB Electrical Test Equipment, Inc. manufactures, distributes, and services equipment, allowing us to offer personalized solutions to the power industry. We’ve built our company around our small-business values, including:


When you call, you’ll get someone who knows and cares about you. You can expect honesty and integrity in all your communications with us, because we’re invested in our relationship with you.


Safety is extremely important in this industry, and we have a responsibility to ensure our products are the best. Safe, reliable, and durable equipment saves lives. Nothing is more important to us.


You’ve got work to do, and we respect that. When you request a quote, you’ll hear back from us within 1 business day. Similarly, you can expect a quick turnaround on all of our products, with expedited options of as short as 24 hours, if available.


Check out what some of our amazing customers have to say about us in our Testimonials.

Meet Your team

Electrician worker at work against electric post and blue sky background

Pat Tavare

Owner & President

Electrician worker at work against electric post and blue sky background

Kathy Lawrence

Inventory Manager & Shipping/Receiving

Electrician worker at work against electric post and blue sky background

Tammie Tavare

Production Manager

Electrician worker at work against electric post and blue sky background

Gary Brehm

Technician and Technical Support