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Commercial Surge Protection FAQs
Commercial surge protection can get technical—so we’re here to make it clear. Find out what you need to know to make smart, informed decisions for your building. If you still have questions, reach out to our team for personalized guidance.
Surge protective devices (SPDs) protect electrical systems and equipment from damaging voltage spikes caused by lightning, utility fluctuations, or internal equipment cycling. These devices detect excess voltage and divert it safely to the ground before it can impact your systems.
There are three common types used in commercial settings:
- Type 1: Installed between the utility power line and main service panel to block external surges—such as lightning or utility switching events.
- Type 2: Mounted at main or subpanels to protect against both external surges and internal spikes from HVAC units, motors, or industrial equipment.
- Type 3: Low-capacity devices used at the point of use (outlets, power strips) to safeguard sensitive electronics like computers, servers, and telecom equipment.
It’s generally recommended to have a layered SPD approach—starting at the panel and extending to high-value equipment—to provide comprehensive protection tailored to your facility’s risks.
A commercial surge risk assessment is a thorough evaluation of your building’s electrical infrastructure to identify vulnerabilities to power surges. We start by inspecting your main service panel, subpanels, and any existing surge protection to see how well your system is currently protected. We assess sensitive equipment like computers, security systems, and HVAC units. We also evaluate external risks such as frequent lightning, nearby industrial activity, or aging infrastructure.
Based on our findings, we recommend tailored surge protection strategies, including panel-mounted devices, point-of-use protection, or full-building upgrades. The goal is to reduce downtime, protect your investments, and keep your business powered without disruption.
A joule rating measures how much energy a surge protector can absorb before it fails—the higher the rating, the greater the protection. For commercial properties, this is especially important when protecting high-value equipment like servers, POS systems, HVAC units, or industrial machinery.
We help determine the correct joule rating based on the size of your building, the type of equipment you rely on, and your exposure to surge risks. As a general rule, 1,000–2,000 joules is suitable for office environments, while industrial or data-heavy facilities often need 2,000+ joules and layered protection. Don’t worry; we’ll assess your setup and recommend the right devices to keep your systems safe!

Invest in Reliable Commercial Surge Protection Today
Don’t let a single surge shut down your business. Our commercial electricians install code-compliant surge protection tailored to commercial properties of all sizes. Let us evaluate your current electrical setup and provide you with reliable devices to protect your equipment, employees, and bottom line.
Contact us today to schedule an inspection or installation and stay one step ahead of unexpected power spikes!