jamieled

Exploding BT socket and a lucky escape

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Openreach came out today to sort the master socket. Whatever happened, it melted a load of armoured bt cable and joints and popped stuff in the exchange ~2km away.

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In a previous life when I worked fir BT, one of my specialisms was BT kit near generating systems or high voltage kit something called “rise of earth potential” meant we had to protect our network as the earth potential could rise if a high voltage system went faulty and actually cause damage to people or kit at the exchange or joints along the way. Basically “line isolators” had to be installed but so many people in the electrical business had not heard of it and took some convincing it was needed . Might of worked in this instant (but not required) .

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I was asking sse and the openreach engineer if there was anything we could do to stop this happening again. SSE have at least put some insulation on their transformer which might stop contact from any other unlucky flying birds. I don't think there's anything else we can do in the house and the openreach guy reckoned it was just pretty unlucky and that given the large number of rural houses fed from a transformer it's not worth trying to protect their lines from an unusual voltage spike on the power network.

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1 hour ago, jamieled said:

don't think there's anything else we can do in the house


You can fit whole house surge protectors in domestic CUs - they aren’t that expensive at ~£120 or so. Have to get the right one for the installation though as they vary by supply type. 

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13 hours ago, PeterW said:


You can fit whole house surge protectors in domestic CUs - they aren’t that expensive at ~£120 or so. Have to get the right one for the installation though as they vary by supply type. 

 

My new CU (Hager Design 50) has one fitted 👍

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