Alan J. Wylie wrote:
Graham. writes:

The last 3 or 4 times I have visited them I have heard a thud, and the
lights blink at the same moment. This happens maybe twice per hour,
but not regularly enough to be able to predict the next event.

...

The bangs however seem to emanate under the floor at the back of the
house near to, or maybe even beyond the party wall. The elderly lady
next door says she hasn't noticed anything.

I thought water would be involved, and we have had torrential rain
recently, however not a drop has fallen this week and I witnessed 3 of
these events last night.

...

I had exactly this problem 20 years ago soon after I moved in to a house
I had just bought. The bangs seemed to be days/weeks apart, though

Eventually diagnosed to a blocked underground watercourse running
through the front garden, water coming in under the floorboards, and
some plonker having left a dangling unterminated live mains cable
lying on the rubble under the floor. The end of the cable was clearly
split and blown apart. I still haven't worked out the exact mechanism:
mains is A/C so electrolysis producing hydrogen shouldn't be the answer.

whats AC got to do with it?



--
Ineptocracy

(in-ep-toc-ra-cy) €“ a system of government where the least capable to
lead are elected by the least capable of producing, and where the
members of society least likely to sustain themselves or succeed, are
rewarded with goods and services paid for by the confiscated wealth of a
diminishing number of producers.