Electrical Surge Protection - Non-Tower Site

With the presence of sensitive electrical equipment such as base radios and computers, the potential for damage from surges that may enter through the normal power system or from direct or nearby lightning activity is increased.  To minimize this risk, your organization has implemented the use of plug-in surge protection devices (SPDs).  As a general rule, we recommend plug-in SPDs should have a visual indicator to show that it is functioning properly, built in short circuit protection, a correct wiring indicator (for the outlet into which it is plugged) and be UL 1449 listed (3rd ed.).  Many of the retail units sold as surge protection are actually listed as a multi-tap outlet and do not meet the more stringent testing and performance requirements of a true SPD. When possible, point-of-use SPDs should not only include the electrical supply but also any low voltage signal lines, such as phone, data, CATV and radio coax.  Without having all conductor lines run through the SPD to provide a common ground reference, equipment plugged into the unit may still be at risk. Your organization may want to contact your radio installer or an electrical contractor familiar with surge protection issues for information on commercial units that may provide you with a better level of protection.  To further enhance your protection level against surge damage, your organization may also want to consider the use of SPDs at the branch panel or main panel of the electrical system.  While the initial cost is greater, these units are more robust, can handle higher surge levels and provide a greater range of protection.  Again, these units should be UL1449 (3rd ed.) listed and installed by a qualified electrician.