Is the UL label an indication of a quality product?

Surge suppressors should perform to a specific standard (UL 1449). It is important that the surge suppressor is “listed” as performing to this standard. Avoid suppressors with labels worded like: Tested to UL 1449 UL Classified Tested to IEEE C62.41 Meets UL 1449 UL Recognized Temporary Power Tap Many manufacturers misrepresent their products. Some claim […]

My electronics have built-in surge protection. Why do I need more?

Built-in surge protectors often aren’t strong enough to handle larger surges and spikes and, like other smaller surge protectors, can wear out without your even knowing it, leaving you with no protection at all. Built-in protection for one piece of equipment may still leave you without protection for important peripherals such as answering machines, modems, […]

What is clamping voltage?

Clamping voltage, also referred to as let through voltage or the Voltage Protection Rating (VPR), is the amount of voltage a surge protector permits to pass through it to the attached load (ex: a TV) during a surge event. Clamping voltage is a performance measurement of a surge protector’s ability to attenuate a surge, or […]

What Joule rating should I choose?

Many homeowners look at Joule ratings to determine which surge protector to purchase. Unfortunately, Joule ratings can be misleading according to IEEE research. When a surge protector is submitted for third party testing with Underwriters Laboratories (UL), a Joule rating is not a tested parameter. Joule ratings are an unreliable measurement for determining a products […]

What is surge current capacity?

Surge current capacity is the maximum amount of surge current that a surge protector can pass for a single surge event. This level is used to indicate the protection capacity of a particular surge protector. For example, in a high exposure area with a high likelihood for lightning, a larger surge current capacity might be […]

What should I look for when selecting a Surge Protective Device?

Any surge protective device that you consider must be listed UL 1449 3rd Edition. All manufacturers UL listings are available for review on the UL website. Be careful not to confuse SPD listed products with secondary surge arrestors such as lightning arrestors. Secondary surge arrestors have a clamping voltage much too high to protect sensitive […]

What is the purpose of the phone jacks on surge suppressors?

Some of the surge suppressors incorporate protection circuitry for telephone lines. There are two sockets on these products. By plugging a phone line through the sockets, you can minimize the effects of a surge coming into your equipment through the phone line. Fax machines, cordless phones and answering machines are especially sensitive, and computers with […]

Will these devices prevent my clocks from blinking?

No. Neither the main, interior, nor exterior zone protectors can eliminate blinking clocks. Blinking is caused by momentary sags or outages, which are solved by the use of a UPS unit or buying electronics with built-in battery backup.

Why do I need a surge protection system?

The problems caused by disturbances in the power line may not surface immediately. They can cause the gradual breakdown of electronic circuitry. Any piece of electronic equipment that behaves in an erratic fashion may need a surge protector. However, new equipment should be protected when installed.

What is Whole House Surge Protection?

Whole House Surge Protection is a system of surge protectors working together to eliminate surges from a number of external and internal sources. Applying surge protectors at the incoming electrical, cable/satellite, and telephone utility services keep externally generated surges from entering your home. Localized surge protectors applied to sensitive electronics safeguard against internally generated surges.