I have posted a piece here which is also on the TT topic, but is more general and I think a new thread would be better. Your voice is heard. See below.
David that does seem strange that metal CUs were seen to be the answer to preventing fires caused by loose connections in plastic CUs. At the time I seem to recall that there was a school of thought that not removing the fire retardant from the plastic used for the case, going back to tunnel terminals with 2 screws or being able to use smaller diameter strands in the meter tails would have been just as good a solution. Of course none of the solutions cater for poor installation practice which I'm sure we have all seen. Were the various comments on forums like these not taken into account as regards the change?
David that does seem strange that metal CUs were seen to be the answer to preventing fires caused by loose connections in plastic CUs. At the time I seem to recall that there was a school of thought that not removing the fire retardant from the plastic used for the case, going back to tunnel terminals with 2 screws or being able to use smaller diameter strands in the meter tails would have been just as good a solution. Of course none of the solutions cater for poor installation practice which I'm sure we have all seen. Were the various comments on forums like these not taken into account as regards the change?