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Electricity can sometimes experience voltage and frequency shifts that can damage sensitive electronics. A surge suppressor prevents this by bleeding off excess voltage and sending it to ground. Use for questions about these devices. Use with the [electrical] tag

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Late last summer my 4 year old AC unit fried its mainboard and the company which installed it originally came to service it. They suggested that the reason could be a surge, as they had a rash of call …
asked May 5 '19 by user101251