Lightning Protection Systems

Lightning Shots

Cavanaugh Electrical in partnership with Harger Lighting Protection ( offers a full-service Lightning Protection System solution to our clientel. Upon inquiry, our trained personnel will schedule a site visit to walk through your facility & assess your LPS needs. From that point, system design drawings will be fabricated, estimate reviewed and installation will follow. Upon completion of the install, Cavanaugh will coordinate with UL to have the system inspected and approved via UL Lightning Protection Certifcate Program. This will safeguard your investments and provide the peace of mind that in the evident of a lightning strike you are protected.

What is a Lightning Protection System?

An effective Lightning Protection System is designed to protect a structure by providing a lightning strike with low impediance to ground.
A well designed LP system, is a minimal investment to safeguard the facility and equipment from potential disaster and or weather-related deaths. There are four main parts that comprise a Lightning Protection System:

  1. Intercept a lightning strike via a strike termination device, which is also referred to as air terninals or lightning rods
  2. Provide a path safely down the structure; this will include the bonding of metallic objects to the LPS conductors to keep all objects at an equal potential during a lightning strike
  3. Disperse the lightning strike safely into the earth by installing ground rod electrodoes, ground ring conductors, ground test wells, etc.
  4. Ensure that Surge Suppression devices are installed on electrical systems to limit the voltage supplied to an electronic device by either blocking or shorting to ground any unwanted voltage above a safe threshold.

Is Your Facility at Risk?

As an owner or facility manager, how do you safely protect your organization’s investment in employees, property and equipment? According to the Insurance Institute for Business & Home Safety, a Lightning Protection System is recommended for buildings in areas subject to an Average Flash Density of 2 ro 3 fl/sq km/yr. What are some critical factors to consider?

  • What are the legal ramifications for failure not to protect?
  • What is our associated downtime or cost if strike shuts down the facility?
  • Does this facility provide a public service in which closing is not an option?
  • What equipment or structural issues are we putting at risk?
  • What is the impact to our personnel, our clients, & our customers


INHS Lightning Density Map