23 hours ago, andy™ said:

 

grade D can be connected to their own dedicated circuit or a regularly used lighting circuit

 

my preference is with the lights, more so because if there is a fault its usually noticed sooner and less likely to be ignored and left unfixed, but one drawback is its probably more likely to trip in the first place due to it being used for other purposes. considering both sides, id say overall risk of it being left unfixed is less if its on with the lights

Agreed, in theory that one SD is not really going to blow a 13 amp fuse in the FCU is it.

Unfortunately it couldn't have its own independent circuit at this stage as i've already wired the property. Lack of planning i guess.

7 minutes ago, Litch90 said:

Part number for the Texecom units? thanks mr h 

 

http://www.texe.com/uk/products/range/fire-detectors/

would only need a 3 or 5 a fuse if it was from a spur, but 5839 does state lighting circuit and not general power circuit

 

if going wired / grade D, you would also need a cable to interlink them, unless you fit something link aico with radio bases and take a supply to each one from a nearby light (assuming there is a permanent live there)

21 hours ago, norman said:

My take is, (without reading all the above) if it's residential only and not a requirement (new build etc) then anything you add will be better than nothing, whether it be compliant with BS or wired in string. I have both smoke/heat and Co on my home alarm (wired in 8 core and wireless) and they function better than s/a imo.

Off the

 

20 hours ago, Simlec said:

Sounders are the biggest problem after the 72h standby. Also all detection and sounder circuits need to be monitored.   

Could you explain the regs please? I'm familiar with 5879.. but not to your level. Whats it this 72 hour standy you mentioned? Thank you

it is 5839 btw

2 minutes ago, james.wilson said:

it is 5839 btw

If your not interested 

 

BS 5879
Method for measurement of dimensional change of paper after immersion in water

 

Or something like that

17 minutes ago, al-yeti said:

If your not interested 

 

BS 5879
Method for measurement of dimensional change of paper after immersion in water

 

Or something like that

 

you googler....

 

Of course lol odd b's standard maybe plumbers know it 

i best get a copy of it for the next time i get some paper wet, just to make sure it complies

if its wet then fire is no worry