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Satellite TV receivers & systems support forums
Multi-receiver/TV systems - Domestic only
Electrical Safety – Earth bonding
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<blockquote data-quote="satelliteman" data-source="post: 530584" data-attributes="member: 255812"><p>Not all larger systems can be wired in a star configuration.</p><p></p><p>If your going to earth a multi-switch back to the board, even if it's a domestic set up, you need to also make sure you are using benchmarked cabling (copper to copper)</p><p></p><p>Other cables may not carry the current and trip the RCD in the event of a fault.</p><p></p><p>** INFO: The maximum resistance between the buildings earth point (PE) and the furthest point on a system is 3.5 Ohms. Now 2 Ohms of that is between the PE (primary Earth) and your earth bar at the multi-switch location. This shouldn't be a problem as your cable runs won't be too long.</p><p></p><p>** INFO: This method of safety provision ensures that any hazardous fault currents that maybe present on the distribution system are taken to earth.</p><p></p><p>** INFO: Either a faulty TV/ SAT RECEIVER or some other mains operated equipment being connected to the system would generate these hazardous voltages and pass them around the system unless some electrical protection is provided.</p><p></p><p>This info is mainly for IRS systems on commercial properties, ie. apartments, flats etc...</p><p></p><p>This can also apply to LARGE domestic set ups around the home whereby IRS systems are being used.</p><p></p><p>Note** If your not qualified to work with electrics around the home, consult a qualified electrician. </p><p></p><p></p><p><img src="https://www.satellites.co.uk/styles/default/xenforo/smilies/smile.png" class="smilie" loading="lazy" alt=":)" title="Smile :)" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="satelliteman, post: 530584, member: 255812"] Not all larger systems can be wired in a star configuration. If your going to earth a multi-switch back to the board, even if it's a domestic set up, you need to also make sure you are using benchmarked cabling (copper to copper) Other cables may not carry the current and trip the RCD in the event of a fault. ** INFO: The maximum resistance between the buildings earth point (PE) and the furthest point on a system is 3.5 Ohms. Now 2 Ohms of that is between the PE (primary Earth) and your earth bar at the multi-switch location. This shouldn't be a problem as your cable runs won't be too long. ** INFO: This method of safety provision ensures that any hazardous fault currents that maybe present on the distribution system are taken to earth. ** INFO: Either a faulty TV/ SAT RECEIVER or some other mains operated equipment being connected to the system would generate these hazardous voltages and pass them around the system unless some electrical protection is provided. This info is mainly for IRS systems on commercial properties, ie. apartments, flats etc... This can also apply to LARGE domestic set ups around the home whereby IRS systems are being used. Note** If your not qualified to work with electrics around the home, consult a qualified electrician. :) [/QUOTE]
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Satellite TV receivers & systems support forums
Multi-receiver/TV systems - Domestic only
Electrical Safety – Earth bonding
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