>and what solutions have people come up with for passing cables
through
joists? How big can the hole be?
Drill a hole in the middle of the joist (it's the place of least
stress).
Seem to recall some document specifying maximum size of hole (probably
IEE
Wiring Regs - don't have it to hand) - think it was no larger than 1/4
the
depth of the joist. Standard disclaimers apply.
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