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Old 24th Mar 2019, 1:37 am   #39
Oldcodger
Nonode
 
Join Date: Oct 2014
Location: West Midlands, UK.
Posts: 2,181
Default Re: External telephone line junction box.

Quote:
Originally Posted by Station X View Post
ISTR there was an earlier drop wire coloured black. Possibly it was terminated on an old style protector. Or may be 2 core flat cable was run from the drop wire to the protector. If so I don't know how the connection was made, perhaps inside an old style insulator? The whole idea of drop wire was to get rid of insulators etc. The drop wire was mechanically terminated at the pole and premises using clamps. The later ones were coarse helixes of insulated steel wire which the drop wire was wound around. The earlier versions had some kind of sliding clamp.
There were a few types of dropwire. One was a smaller grey type ( No 3,if memory serves), which was used with its own style clamp (colloquial term in engineer speak was "curliwurlie"). In our area, this one was removed as not suitable for the climate/locale, and DW4 used instead. Clamps were phased out somewhere in the late 60's, being replaced by spiral clamps( colloquial term in engineer speak was "curliwurlie"). I've also seen dropwire to a house, with insulators 16 at the house end used to connect a DW4 to a leader ( soft copper pair) to the protector or phone block trminal.
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