Re: Lightning- everything blown up - virgin washes their hands
31-08-201820:37 - edited 31-08-201820:38
I've been following this thread with interest because I'd like to understand the risk to my equipment.
I found an interesting US case where the customer was compensated for damage from a lightning strike to a neighbouring property which sent a spike down the CATV cable. The US standards on cable tv/broadband seem to differ from the VM practice in that it appears that they do not have a fully isolated connection to the STB/Modem but they bond every customer outlet to their main electrical earth. In this case the customer had paid for a satellite dish to be installed after the cable installation. The dish installer incorrectly assumed it would be replacing the cable connection, so he bonded the dish installation by moving the cable company's protective bonding cable to the dish installation. In the end the dish installer paid for the damage caused by the cable surge because they had removed the protective bond.
I've failed to find relevant information on the subject from the IET.
There seems to be a general view that local ground bonding is key. That is not provided in a typical VM installation.
No precautions can guarantee that there will never be a case where lightning causes damage. In section 7 of the Dehn paper we find a guideline sentence "A final risk analysis must prove that the residual risk is less than the tolerable risk" which leaves the assessment of a tolerable risk open for discussion.
How do you keep my information? How do you keep my information?
We collect and store your data safely and only for the time strictly necessary to operate services provided to you by Virgin Media and/or based on the reasons that we process your personal data. Afterwards it’ll either be destroyed or anonymised.
When determining the relevant time we store information periods, we take into account factors such as:
Legal obligation(s) requiring data to be kept for certain periods of time
Guidelines issued by the UK’s data protection authority.