Functional earth fly leads and rcbos

[Gavin John Hyde]

Whats peoples approach when dealing with the earth fly leads on RCBOs?
Got a board to fit next week and the bits arrived today. So been busy getting rid of packaging and putting bits together ready and checking its all arrived.
Hager say you can trim the fly lead and nuetrals down if needed as long as you use a suitable ferrule or termination. The supply neutrals arent so much an issue as they are quite thick.
The fly leads are so thin and flexible that i think id struggle to find a decent ferrule or crimped connector to go on the end to then go in the earth bar. Anybody got recommendations for ferrules?
Likewise how do you terminate them?
If i have space i will terminate them on their own in the earth bar. Otherwise i terminate with the corresponding cpc.
Keeping each circuits bits together.
Can be bit awkward with a ring final or 10mm circuit though. So in these instances i put them in the earth bar separately. Just got to be careful when tightening that you get a good grip as its easy for them to go down side of screw and be loose.
The new CU i am installing is only 7 RCBOS in a 10 way board so lots of space to make it look pretty.

 

[Darkwood]

Agree with Lucien - it is not good practice to tin the ends of stranded wire if they are being inserted into a screw terminal.

Ferrules in 13A plug-tops? Really?

Not the ferrules with a plastic guide on them, non-insulated ferrules, like a bootlace without the plastic skirt, a lot of products now that come with plug tops that are not molded do use these crimps, the fact that screw terminals will by their nature push apart and splay the fine-wire even when they are twisted usually ending up with a poor termination is enough for me to say it should be done... look at post 40 by Ian - first pic and look how the manufacturers termination has splayed the cores and pushed them up the sides of the screw where they will be not clamped properly and often damaged by the sharp edges of the thread, the space at the side of the thread is clear in the pics and I cannot believe that the majority of manufacturers now crimp in this situation just because they want to as it adds time and money to make the product... I know that pendants are covered by the BS67 (1987) and this references many other regulations but as it's not the cheapest thing to buy it is hard to find any specific info, I believe it is like our regs in that there will be so many areas of compliance that these small things can be lost in the paperwork meaning some manufacturers may be in non-compliance, noted the two brands shown above are budget brands, they indeed may not be breaching any regulations at the end of the day but if is shown that the terminations at factory are not clamping the fine-wire correctly then it should be the case you do not need a regulation to alter how you terminate the product.

 

[PEG]

Lovin' this...it's been a while since there has been an intense debate, over the minutiae of the trade

 

[Wilko]

Lovin' this...it's been a while since there has been an intense debate, over the minutiae of the trade

Since I've started to use ferrules more, I see more of them in use. I must've been ferrule blind

 

[PEG]

Since I've started to use ferrules more, I see more of them in use. I must've been ferrule blind

The 10mm ferrules,are ideal for finishing my nieces plaits and pony-tails off,when she stays,as she kept coming back from school,with her bobbles missing...

Strange,but they seem shorter,every time she visits...