Lighting and alarm cables running alongside each other

[Jupiter01]

I recall reading somewhere that this was not advisable.
In my situation, I am squeezed for space but planning to have the alarm and lighting cables in their own conduit. Do you know if this is likely to cause any issues?

Thanks in advance.

 

[fourtytwo]

My alarm bells rang on that one, plenty of advise not to do it!
I guess it depends on the panel and length of run that you did not tell us about.

I have a very long run of 30M or so under floorboards in proximity (<=6") of power cables but it is CAT5 twisted not standard alarm cable, even so I have had a few false alarms on that zone, Texecom 8.

 

[Jupiter01]

I have a Premier Elite system. I am suing 6 core alarm cable (not ethernet). The alarm cable is approximately 15m in length

 

[secureiam]

You can measure the ac, you can use act filters, look at there trouble shooting pages on this subject and suitable options.

shielded cable can be used again it need doing properly.

Recently a customer moved a cable 3ft on to the wall and it killed an expander and caused no end of issues and had to be moved back.

However they had 3 phase power.
What made it worse the filter didn’t work which ACT suggested could be an earth fault, that’s been refered to a sparky to check out.

But like most things it’s better to avoid the problem as once you start chancing things you can create a whole can of worms to sort out.

 

[Jupiter01]

Just checking that it's not been missed in my original post. I am proposing that the lighting cable will run its own 20mm plastic conduit and the alarm cable in its own and separate 20mm plastic conduit. They are both sheathed.
If that is still an issue, approximately how far apart do they need to be?

Thanks for your help with this.

 

[secureiam]

lighting cable is usually very low power these days but may not be, the more power going through the higher the risk, its the power going through them thats the issue you may be okay, you may not, measurement is the only way to be certain.

I have cctv and alarm cables running along side mains cables as no other easy choice if it caused an issue then it would need dealing with.
So where possible you need to mitigate it, try and put them as far apart as you possible can initial power up the lights and see what if any affect it has on the cable.

In the issue above 3ft away and the system worked fine, but thats 3 phase which is a lot more power than you get on single phase

 

[Murdochcat]

Are you rewiring the property?

 

[Jupiter01]

Are you rewiring the property?

Extending the lighting circuit to add a new light and also extending the alarm cable to relocate a door contact.

 

[Murdochcat]

Extending the lighting circuit to add a new light and also extending the alarm cable to relocate a door contact.

There is a distance these cables should be kept apart when running parallel in the big book ...........

 

[sparkymarka]

If both are in there own 20mm conduit then they will be fine …

 

[Murdochcat]

If both are in there own 20mm conduit then they will be fine …

Metal conduits probably, plastic definitely not

 

[sparkymarka]

So what happens in separated dado trunking …

 

[sparkymarka]

Don’t let this be the panic arse electrical forum

 

[Murdochcat]

So what happens in separated dado trunking …

Depends on the size of the seperated dado trunking …..

 

[sparkymarka]

Yawn