FP Cable Is Not Always Suitable

[Guest111]

The last lad I trained asked about pyro at college and was told they didn't do it any more as it was a bit of a black art eventually I can see it being a specialised thing if something isn't done to improve training at college,lets be honest it's still widely used in certain areas so should still be taught as part of normal trade training.

 

[davesparks]

I was taught the same way mate as many others will as its good practice. I had a conversation with a guy from Cormeton once who was commissioning a fire alarm system that had been extended from pyro to fp and he said ut can cause problems. Cant remember the reason he gave I think it was on an adressable system so may have been something to do with the systems knows which way accessories or set at or something along those lines. (Im not mega clued up on the technical side of fire alarms)

That sounds like a bit of old bull to get around him being unable or too lazy to do it properly.
It's easy enough to get the polarity right on a bit of pyro, and I'm sure a earthed solid copper sheath is better than a bit of tin foil wrapped around the cores as far as screening goes.

 

[DRG]

You're probably right mate

 

[shanky887614]

first attempt at 2l1.5 using double pliers method

lovely stuff to work with, I don't know why some people really don't like it

 

[davesparks]

How did you get the seal crimped into the pot without stripping a bit more sheath back to get the crimped round it?
It may be an optical illusion but it doesn't look like you've stripped enough sheath back to me

 

[shanky887614]

How did you get the seal crimped into the pot without stripping a bit more sheath back to get the crimped round it?
It may be an optical illusion but it doesn't look like you've stripped enough sheath back to me

yup your right, I havent actually threaded it as far as I should have.

its caught a little bit of thread but I didnt realise how far it was supposed to go till I just did more research on youtube.

 

[Guest77]

yup your right, I havent actually threaded it as far as I should have.

its caught a little bit of thread but I didnt realise how far it was supposed to go till I just did more research on youtube.

What dave means is you need to strip back more orange sheath so you can slide the gland back, you need to crimp the cap into the pot firmly, you can't do that with the gland in the way fella.

 

[shanky887614]

What dave means is you need to strip back more orange sheath so you can slide the gland back, you need to crimp the cap into the pot firmly, you can't do that with the gland in the way fella.

true, to be honest Its a bodge at home till I get hold of a crimper.

I crimped it into the pot by putting one side of the grips on the very bottom on the gland and the other side on the top of the pot.

I would like to have used a proper crimper but I don't have access to one at the moment

 

[Guest77]

true, to be honest Its a bodge at home till I get hold of a crimper.

I crimped it into the pot by putting one side of the grips on the very bottom on the gland and the other side on the top of the pot.

I would like to have used a proper crimper but I don't have access to one at the moment

aye I know pal, bear with me.

 

[davesparks]

Yeah sorry, I meant the orange over sheath not the copper sheath, I should have made myself clear.

 

[trev]

first attempt at 2l1.5 using double pliers method

lovely stuff to work with, I don't know why some people really don't like it

It's not so much that they don't like it, more that they're scared of it. I agree, I think it's fantastic stuff.

 

[shanky887614]

Yeah sorry, I meant the orange over sheath not the copper sheath, I should have made myself clear.

I used a pair of tiny grips I have to screw the pot on but I didnt screw it in fully.

that answer your question?

 

[trev]

Not bad for a first attempt, I've seen a lot worse. Did you IR it?

 

[Guest77]

when you screw the pot on you only want the bare cable sheath to just be level with the top of the threads inside the pot, I always pull the cores with a pair of pliers before adding compound and blow out the powder so the pot is clean and dust free. When you get a crimper which hopefully will be early next week you need to ensure the gland slides back away from the pot so you can really get arount the whole pot to crimp it up tight, apart from a couple of basic mistakes your attempt looks good, it is straight and the cores look in good condition, practice makes perfect :rockon:

 

[shanky887614]

when you screw the pot on you only want the bare cable sheath to just be level with the top of the threads inside the pot, I always pull the cores with a pair of pliers before adding compound and blow out the powder so the pot is clean and dust free. When you get a crimper which hopefully will be early next week you need to ensure the gland slides back away from the pot so you can really get arount the whole pot to crimp it up tight, apart from a couple of basic mistakes your attempt looks good, it is straight and the cores look in good condition, practice makes perfect :rockon:

attempt 2 so far

ill leave the compound off till I get a potting tool.

im going to take into work in the morning then ill ir it. (im at home and dont have an ir tester)