Russell griffiths Posted June 22, 2020 Share Posted June 22, 2020 So electrical main coming into the property, and some type of comms cable going out to the garden gate to give signal to open gates and also receive signal from intercom and cameras. Now i believe these two should be separated to stop interference from the electrical cable, can anybody point me at distances apart and the bit I’m thinking about is the entry to the cupboard where the cu will be, at the moment I have two ducts that come up through my block n beam floor, but these ducts touch, should they be spaced apart by drilling another hole in the floor and having each in opposite sides of the cupboard, or is ducting sufficient to isolate them from each other. @PeterW @ProDave @Onoff Link to comment Share on other sites More sharing options...
reddal Posted June 22, 2020 Share Posted June 22, 2020 No guarantees, but in my experience it will probably be fine. If you were trying to do some super high bandwidth application on the cat5 cable it might be an issue - but for a signal to open a gate I'd guess it would work even swarmed by power cables. Link to comment Share on other sites More sharing options...
Triassic Posted June 22, 2020 Share Posted June 22, 2020 Can I add to the question. Out meter is in an out Building, Will the mains cable interfere with the Eddi current signal cable, as they are in the same duct as the power cable? Link to comment Share on other sites More sharing options...
Onoff Posted June 22, 2020 Share Posted June 22, 2020 It's all about "harmful mutual effects". For "telecoms" Band 1 circuits nominal separation distance between it and Band 2 (230VAC) is 50mm for internal & external wiring. On the basis you don't want induced mains on a piece of kit someone might be holding etc. Below 50mm a "non conducting divider" should be inserted between the cables. Aka put a small duct inside a big duct. Link to comment Share on other sites More sharing options...
PeterW Posted June 22, 2020 Share Posted June 22, 2020 bigger issue will be general interference on the CAT5 at the length to an intercom etc (assuming it is analogue and not IP) and the feedback on it. Use shielded FTP cable if possible and clamp the shield to earth at the gate end Link to comment Share on other sites More sharing options...
Onoff Posted June 22, 2020 Share Posted June 22, 2020 I'd run regular, duct rated Cat-5 in a separate duct first. If there's issues it's easy to pull through new screened stuff bought by the metre. Link to comment Share on other sites More sharing options...
PeterW Posted June 22, 2020 Share Posted June 22, 2020 External FTP isn’t expensive - also usually solid copper not CCA Link to comment Share on other sites More sharing options...
Onoff Posted June 22, 2020 Share Posted June 22, 2020 26 minutes ago, PeterW said: External FTP isn’t expensive - also usually solid copper not CCA Isn't the sheath UV proof too? Link to comment Share on other sites More sharing options...
Russell griffiths Posted June 22, 2020 Author Share Posted June 22, 2020 Ok cool, I’m going to separate them a bit in the morning even though it’s all ducted, the last thing I want is getting Chanel 4 news on the intercom when the postman rings it. I will I’ll come back to you clever people regarding the cable type later on. Ta very much. Link to comment Share on other sites More sharing options...
PeterW Posted June 22, 2020 Share Posted June 22, 2020 1 hour ago, Onoff said: Isn't the sheath UV proof too? Yep - does make it a lot stiffer than normal but nothing too unmanageable Link to comment Share on other sites More sharing options...
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