03-07-2011, 12:55 PM
tiv48, The practice of just using tinned copper wire for wiring radios was in use back in the 20's. Then later - shellacking or varnishing the wires gave a minimum of insulation. By the 30's, rubber insulated wiring was in common use, but mainly coloured black. By the time the war finished & into the late 40's, pvc & other plastic insulation was becoming commonly used. Resin coated, Rayon, & Fibreglass sleeving has also been in use since the 40's.
As Fido says, mains energized speakers were often annoyingly wired with a bundle of mono coloured (mainly black) wires. Another of my pet hates is when these are hard-wired direct to components under the chassis & pass out through(often perished) a rubber grommet - to the mounted speaker. When re-assembling I always fit a tag-strip or term. strip for easy connection. And sleeve the whole bundle with flexi-sleeving.
Regards, David
As Fido says, mains energized speakers were often annoyingly wired with a bundle of mono coloured (mainly black) wires. Another of my pet hates is when these are hard-wired direct to components under the chassis & pass out through(often perished) a rubber grommet - to the mounted speaker. When re-assembling I always fit a tag-strip or term. strip for easy connection. And sleeve the whole bundle with flexi-sleeving.
Regards, David
