Crimp Connections

[Uptomischief]

Hi All,

I want to join some 2.5 t&e in a conduit. I have gotten some crimp connectors from the local Elec supplier. However, when these are pushed together most of the metal connection is still exposed. What can i use to insulate this? Is PVC tape ok? I was thinking of maybe using heat shrink?

Any suggestions would be appreciated
Cheers

 

[andy]

, when these are pushed together most of the metal connection is still exposed

it shouldnt be. what are you using to crimp them?

 

[Uptomischief]

Hi,

I am using a crimping tool... When I was in the Elec Supply store, I asked for insulated butt connectors but was told they are generally not used?? Unfortunately I don't have a picture, but they gave me a 'unisex' connector!

 

[andy]

you need insulated crimps. and when you say crimp tool do you mean proper ratchet crimp tool or £0.99 pence crap crimp tool

 

[Uptomischief]

Hi Andrew,

I have a proper rachet crimp tool, and i'll check out the insulated crimps.

Thanks for your help

 

[andy]

I have a proper rachet crimp tool, and i'll check out the insulated crimps.

these arent used on non-insulated crimps. do the type you got have 3 positions for crimps, ref blue and yellow?

 

[plugwash]

it sounds like he has used blade and partially insulated blade recepticle crimps

what he should be using is insulated butt crimps (these are crimped to two wires and don't have any plug/unplug bits)

 

[andy]

it sounds like he has used blade and partially insulated blade recepticle crimps)

having re-read his first post, i agree he must of used these.

Uptomischief - if you have you need to use butt type crimps. mainly because they can carry more power and are fully insulated

 

[plugwash]

and because under tension they won't come unplugged

 

[ban-all-sheds]

When I was in the Elec Supply store, I asked for insulated butt connectors but was told they are generally not used?? Unfortunately I don't have a picture, but they gave me a 'unisex' connector!

They were seriously misleading you. If plugwash is right in his interpretation of "pushed together" then not only have you got a problem regarding insulation, but you've also got an electrical connection wich cannot carry enough current.

Whether the place you went to did this out of ignorance, or maliciousness I can't say, but in either event they should be ashamed.

The crimps you were after are so generally used that even Screwfix sell them.... http://www.screwfix.com/app/sfd/cat/cat.jsp?ts=99525&id=101874

 

[plugwash]

sp[ecifically for ones like this

http://www.screwfix.com/app/sfd/cat/pro.jsp?ts=00256&id=70554
_______________________
Moderator

added picture, and the link does work

 

[Stoday]

He asked for crimp connectors, not splices. So what the shop thought he wanted was bullet connectors:

Not suitable for 230VAC of course, but was the salesman told it was for 230V?

 

[plugwash]

im sure in appropriate situations those are suitable for mains

they aren't any less insulated than butt crimps are

and a lot of mains switches and panel connectors take blade recepticles which are pretty similar

it seems to me that bullet recepticles are always fully insulated wheras blades recepticles are sometimes only partially insulated

of course this is all inside an enclosure you shouldn't be using bullets blades or butts without them being properly enclosed

 

[plugwash]

http://uk.farnell.com/jsp/endecaSearch/partDetail.jsp?SKU=150346&N=401 claims a rating of 415V

 

[masona]

What is the idea of using bullet connector ?