where do I find the current rating on a choc block?

[henry1]

I have some old ones lying around and can't find the rating on them. Can't use them then? How can you tell if it's 20A or 30A rated?

 

[swampy2]

Picture will help.

 

[henry1]

It's just a plain white/transparent choc block. Nothing special. And I can't find anything ending with an A written on it.

 

[wingcoax]

You won't find a rating on most choc blocks. Approx what size is the hole in the connector block?

 

[henry1]

well a 2.5mm T&E cable fits in comfortably. The choc block is small enough, aren't they all?

 

[AndyPRK]

sounds a small one then.

What were you thinking of using it for ?

 

[henry1]

lighting circuit or rings main, depending on rating but it looks like I will never know. I'll probably use crimping for the rings main as a 30A choc block is much more expensive in comparison.

 

[ricicle]

For the price of them just buy some new ones that you know the rating of.
Just use the old ones for those occasions where you might make ends safe in an enclosure (no current carrying)

 

[Johnmelad]

Awaiting delivery of some of these, never used them before

http://www.screwfix.com/p/ideal-spliceline-in-line-wire-connectors-pack-of-100/72727

Anyone else used them? They are advertised as an alternative to crimping, so if covered with shrink wrap, are they MF, or would they need to be enclosed in a MF box?

 

[PrenticeBoyofDerry]

lighting circuit or rings main, depending on rating but it looks like I will never know. I'll probably use crimping for the rings main as a 30A choc block is much more expensive in comparison.

There a number of differing sizes of choc blocks, you will not see a rating printed on them, it's much a case of commentators eye. You gets used to using them and tell just by looking if they are suitable.

It can be debated if crimps are cheaper than choc blocks, as you will need to purchase a crimping tool to make the joint and to do this joint securely you would want to heat shrink it also, which would require heat shrink sleeve and a heat gun.

 

[henry1]

lighting circuit or rings main, depending on rating but it looks like I will never know. I'll probably use crimping for the rings main as a 30A choc block is much more expensive in comparison.

There a number of differing sizes of choc blocks, you will not see a rating printed on them, it's much a case of commentators eye. You gets used to using them and tell just by looking if they are suitable.

It can be debated if crimps are cheaper than choc blocks, as you will need to purchase a crimping tool to make the joint and to do this joint securely you would want to heat shrink it also, which would require heat shrink sleeve and a heat gun.

Here's a picture of the size then. What do the experts reckon is the current rating?

choc block size

• henry1
• 20 Jan 2014
• 1

True, you do need a few tools for crimping but in the long run it works out cheaper. I plan to use one of those cheap ratchets and a hair dryer for the heat shrink. I wouldn't mind buying a proper ratchet but not worth it for a one-off job. What do I do with it afterwards? Just sit and take space, gather dust...

 

[Monkeh]

I plan to use one of those cheap ratchets

 

[flameport]

Here's a picture of the size then. What do the experts reckon is the current rating?

choc block size

• henry1
• 20 Jan 2014
• 1

15 amps.
It's also of the type which melts and deforms when it gets hot.

 

[EFLImpudence]

I keep saying it - solid conductors should not be crimped.

Least of all by someone who doesn't seem to care.

 

[Monkeh]

I keep saying it - solid conductors should not be crimped.

Least of all by someone who doesn't seem to care.

There is that, too.