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Apple Computing Products:
macOS - Desktop Hardware
Lightning!
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<blockquote data-quote="westom" data-source="post: 972987" data-attributes="member: 138367"><p>As Franklin demonstrated in 1752, surges seek earth ground. Why would you have appliance damage? That current found earth ground destructively inside your house. Protection is always about where energy dissipates. Either earth an incoming transient before it enters the building. Or that surge dissipated destructively inside - with or without interior protectors.</p><p></p><p> For over 100 years, surges have been earthed so that even telephone operators need not remove headsets during thunderstorms. The technology is that well proven and understood. If that transient was inside your building, then you have what an overwhelming majority do not have. No effective protection.</p><p></p><p> A direct lightning strike to wires down the street is a direct lightning strike to any or every appliance. An electric current that hunts for earth. The 100 year old solution is easy. Every wire in every cable connects to earth before entering the building (cable TV, satellite dish). Of course AC electric and phone will not work. So that wires get connected short (ie less than 10 feet) via a 'whole house' protector. Energy absorbed in earth need not hunt for earth via your power supply. It is that simple AND how it was done even 100 years ago.</p><p></p><p> What provides protection? The protector? Of course not if comprehending what was posted above. A protector is only a connecting device - not protection. Either is connects that energy to earth, OR may connect that energy destructively via an adjacent appliance. IOW a protector is only as effective as its earth ground. </p><p></p><p> How to avoid future damage? Have you upgraded earthing to meet and exceed post 1990 code requirements? Does every incoming wire connect short (ie 'less than 10 feet') to that single point ground?</p><p></p><p> The most common incoming transient path is AC electric. If you have not installed a 'whole house' protector, then surges can overwhelm protection already inside every appliance. Effective 'whole house' protectors only come from more responsible companies such as Square D, Leviton, Siemens, General Electric, and Intermatic. The Cutler-Hammer solution sells in Lowes for less than $50. A solution that costs about $1 per protected appliance.</p><p></p><p> What protects your furnace, dishwasher, and bathroom GFCIs? Only earthing and that one 'whole house' protector. Instead of spending tens or 100 times more money on plug-in protectors, the informed homeowner directs that money to better earthing. Bottom line - a protector is only as effective as its earth ground. And that answers your question.</p></blockquote><p></p>
[QUOTE="westom, post: 972987, member: 138367"] As Franklin demonstrated in 1752, surges seek earth ground. Why would you have appliance damage? That current found earth ground destructively inside your house. Protection is always about where energy dissipates. Either earth an incoming transient before it enters the building. Or that surge dissipated destructively inside - with or without interior protectors. For over 100 years, surges have been earthed so that even telephone operators need not remove headsets during thunderstorms. The technology is that well proven and understood. If that transient was inside your building, then you have what an overwhelming majority do not have. No effective protection. A direct lightning strike to wires down the street is a direct lightning strike to any or every appliance. An electric current that hunts for earth. The 100 year old solution is easy. Every wire in every cable connects to earth before entering the building (cable TV, satellite dish). Of course AC electric and phone will not work. So that wires get connected short (ie less than 10 feet) via a 'whole house' protector. Energy absorbed in earth need not hunt for earth via your power supply. It is that simple AND how it was done even 100 years ago. What provides protection? The protector? Of course not if comprehending what was posted above. A protector is only a connecting device - not protection. Either is connects that energy to earth, OR may connect that energy destructively via an adjacent appliance. IOW a protector is only as effective as its earth ground. How to avoid future damage? Have you upgraded earthing to meet and exceed post 1990 code requirements? Does every incoming wire connect short (ie 'less than 10 feet') to that single point ground? The most common incoming transient path is AC electric. If you have not installed a 'whole house' protector, then surges can overwhelm protection already inside every appliance. Effective 'whole house' protectors only come from more responsible companies such as Square D, Leviton, Siemens, General Electric, and Intermatic. The Cutler-Hammer solution sells in Lowes for less than $50. A solution that costs about $1 per protected appliance. What protects your furnace, dishwasher, and bathroom GFCIs? Only earthing and that one 'whole house' protector. Instead of spending tens or 100 times more money on plug-in protectors, the informed homeowner directs that money to better earthing. Bottom line - a protector is only as effective as its earth ground. And that answers your question. [/QUOTE]
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