[BC] shielded strategy

[VJB]

So I'm most of the way toward putting the 1948
Type-76C back on the air (this is the RCA board I got
in June I told you about). Cleaned up, not yet powered
up.

I've had to make some custom cables to the remote
plate/filament supply, and have tried to replicate the
size and style of wire as original. Can;t find that
old cloth covered neoprene anymore, and doubt old
stuff would still pass 500V test, so I bought new THHN
600V building wire as a substitute.

Question: Is a common shield on separate bundles DC
and AC ok instead of individually shielded, twisted
pairs?

I've made a bunch of runs of twisted pair 14ga
stranded  as the book specifies, but I've put the
eight total pairs for the DC plate runs into two
bundles with an outer sheath of shield braid (stripped
from some surplus coax line) on each bundle.

For the filament runs, four twisted pairs, also 14ga
stranded, I've bundled them together and put a double
sheath of coax braid around them, to try to replicate
the "lead covered" specification in the book.

Second question:  Can the shield braids touch among
the three runs of cable as they are routed between the
board to the remote power supply unit?  Seems like I
ought to wrap at least the filament run in split flex
tubing. 

I know, I know, why not convert it over to CAT-5 and
be done with it...

Thanks for any other advice.
Paul/VJB

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