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| Thread ID: 26411 | 2002-10-26 21:10:00 | Underground Phone Cables | Danger (287) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 93330 | 2002-10-27 09:32:00 | Yes Clueless, there are some (expensive) mains filters like that too. If a spike comes down the line, they lop it off (within reason) and if a gap (brownout) they discharge into the gap to try and equalise it. They (like all mains filters) will usually only deal with "noise" on the mains, more than severe spikes or drop-outs. JM, the reason your fax wouldn't have dropped its bundle is for the reason Clueless gave, the DC (derived from the AC mains) power supply in the fax would have had a good reserve capacitor charged up. If the fax happened to be printing at the time, there wouldn't be enough reserve to power the extra load and hold the voltage up so it would then have spat the dummy. |
godfather (25) | ||
| 93331 | 2002-10-27 10:48:00 | Reply to Clueless question Yes Mux's are the dark green thin cabinets Otn's are normally in cabinets approx .4x.8.x1.0 metres Nodes are approx 400-800 houses , you can tell by the telephony je numbers on the pedestals or on aerial tele joints, the black cyclinder things on the poles. eg 14b-158 14a-4 14c-56 are all in the same node but are feed from different mux's b,a & c respectively. If Aerial plant gets hit with a charge and IF there is no earth between your modem-telephone or set top box you can most likely say goodbye to it, but there is more chance of your regular home power feed line taking out anything as due the fact that the powerlines are a hell of lot more conductive than insulated telephony or coxial cables. All underground cables normally go aerial somewhere !! |
333littledevil (2353) | ||
| 93332 | 2002-10-29 06:25:00 | you know when you a get a surge at night sometimes. The lights dim for about 2 secs then go back to being bright. *thank god for the surge protector on my computer* |
Beef (1415) | ||
| 93333 | 2002-10-29 06:37:00 | i get that every time someone jumps in the shower! (instant hot water) |
Clueless (181) | ||
| 93334 | 2002-10-29 06:42:00 | Beef, the dip is not a surge. The dip is a "brownout" and your surge diverter will not help in any way with these. Only if the dip is accompanied by a "spike" (which you won't ever see in the lights as it would be too short) will it help. System originated spikes can happen for a few reasons, and often have nothing to do with the "dips" you can see. The dip is a lack of power, not an spike. A spike does the damage. |
godfather (25) | ||
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