Roy Bartholomew Sonora CA

Director of Engineering for On Guard Security Systems Inc.

About Me

In Modesto, California, Roy Bartholomew (Roy Bartholomew Sonora) is the Director of Engineering at On Guard Security Systems, Inc. Mr. Bartholomew was born and reared in the San Francisco Bay Area, the youngest of seven children born to French-speaking Cajun parents.

Roy Bartholomew is also the owner of By Referral Only Electric. After 35 years in engineering, he has amassed a specialized and in-demand skill set and beneficial relationships with local and national company owners.

Mr. Bartholomew's engineering, design work, and consulting services for Biodomes and other engineered ecosystems are well recognized in the engineering world, in addition to his full-time profession and entrepreneurial endeavours. Mr. Bartholomew currently resides in Northern California with his wife and children.

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Roy Bartholomew Sonora CA - Portfolio

Recent News

January 25, 2023

5 Questions You Should Ask Before Hiring An Electrician

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January 11, 2023

5 Questions You Should Ask Before Hiring An Electrician

When you decide to have an electrician install or repair the lights in your home, you should ask the right questions. You need to know how to find out if the person you are going to hire is qualified to perform the task and has the proper license to do so. Losing power during a […]

December 20, 2022

10 Frequently Asked Electrical Questions

There are many questions that people ask when it comes to electrical issues. Some are related to problems with the breaker box, a power outage, a recessed light bulb, and troubleshooting. Having a list of these frequently asked questions can make it easier to solve some of these problems. Troubleshooting Common electrical questions can be […]

November 28, 2022

5 Effective Cost Ways to Convert Fluorescents to LED

Using LEDs to replace fluorescents can be a cost-effective option, but there are a few different ways to convert. These ways can range from direct fitting or plug-and-play linear LED conversions to shunting and other methods. Direct-fit or plug-and-play linear LED conversion Using a direct-fit or plug-and-play linear LED conversion solution for your lighting needs […]

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