I'll bury a run of PVC duct between the house and garage for ethernet and alarm cable.
I can't seem to find gel-flooded or otherwise exterior rated security cable - does it exist? I'm thinking of substituting alarm cable with gel-flooded Cat5e for the underground section of the run - Cat5e seems to have about half the conductor area per core (0.2mm2 versus 0.5mm2), so would bonding two Cat5e conductors together be a suitable substitute? This would give me the equivalent of a 4-core security cable on a single Cat5e cable. I'm assuming that standard alarm cable in a (inevetiably) water filled PVC duct is a bad idea
What's the difference between 4-core and 6-core alarm cable (other than the obvious!)? Seems like 2x power and 2x signal cores should be all that is necessary
I'm planning on having 1-2 PIRs in the garage and an external siren. Do sensor and alarm circuits need separate cables or can they be combined on a 6-core?