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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
earthing the lnb possible?
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<blockquote data-quote="dcselec" data-source="post: 636531" data-attributes="member: 325200"><p>Can you post a pic of the mast if its insulated</p><p>from the earth eg on the roof it should be ok there</p><p>is no easy calculation on rods as it depends on the</p><p>soil its going into but if your dish is hit by lighting </p><p>it will be no more quote</p><p>An average bolt of lightning carries a negative electric current of 40 kA, although some bolts can be up to 120 kA, and transfers a charge of five coulombs and 500 MJ, or enough energy to power a 100 watt lightbulb for just under two months. The voltage depends on the length of the bolt: with the dielectric breakdown of air being three million volts per meter, this works out at about one billion (thousand million) volts for a 300m (1,000 foot) lightning bolt. With an electric current of 100 kA, this gives a power of 100 trillion (million million) watts.</p><p>No more dish or lmb </p><p>Dave</p></blockquote><p></p>
[QUOTE="dcselec, post: 636531, member: 325200"] Can you post a pic of the mast if its insulated from the earth eg on the roof it should be ok there is no easy calculation on rods as it depends on the soil its going into but if your dish is hit by lighting it will be no more quote An average bolt of lightning carries a negative electric current of 40 kA, although some bolts can be up to 120 kA, and transfers a charge of five coulombs and 500 MJ, or enough energy to power a 100 watt lightbulb for just under two months. The voltage depends on the length of the bolt: with the dielectric breakdown of air being three million volts per meter, this works out at about one billion (thousand million) volts for a 300m (1,000 foot) lightning bolt. With an electric current of 100 kA, this gives a power of 100 trillion (million million) watts. No more dish or lmb Dave [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
earthing the lnb possible?
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