Rafiki fire alarm

[sparkie-leeds]

Hi All,

I am installing a rafiki 2 wire fire alarm system shortly, is it important to mark the cables going into the detector bases as "IN and OUT" or does it not matter with it been a 2 wire system.

 

[Englishsparks]

It good practice to mark them and is deff easier when fault finding

 

[sparkie-leeds]

i agree, but does it make a difference to the panel knowing which is in and out on a 2 wire system, i know conventional systems do

 

[telectrix]

i concur ^^^

 

[sparkie-leeds]

can anyone else advise on this matter for me:biker:

 

[alarm man]

if the bases have in and out then yes,but its good practice anyway for fault finding

 

[sparkie-leeds]

ok thanks, its just that someone told me it did not matter

 

[Submains]

As previously mentioned, ALLWAYS mark your line "in" at every point regardless of system type. Not only is it good practice but if a fault occurs it's so much easier to find by simply splitting the circuit and putting your eolr across the "in" leg.
Modern two wire and twinflex systems have the eol built into the detectors so the last point has to be set as "end of line" by using the dil switch.
You'll find that when you check the bases out, they are marked as IN+VE and OUT+VE with 0V being common so it is important to mark your lines.

 

[sparkie-leeds]

thanks alot for your advise, will go with that, cheers.:wink5:

 

[telectrix]

i just slap a bit of tape round the IN when 1st fixing.

 

[TaffyDuck]

As mentioned it is good practice to mark them, from an electrical point of view however it makes absolutely no difference at all on Rafiki Twin system