Crimped joints in T&E

[crystal ball]

Just been giving a holiday let the once over for the owners, new CU installed less than five years ago, all the outgoing T&Es are crimp jointed and taped over in the mains cupboard, and although I never use crimp joints on solid cores, some do and heat shrink over, I am going to recommend pulling the cables back and use MF JBs, am I being pedantic?

 

[John D v2.0]

Crimping is fine, it's the tape I'd have issue with. MF jbs would be fine but bulky and expensive in comparison.

 

[crystal ball]

Theres a good void above the mains cupboard with easy access, to replace the tape with heat shrink would require cutting and recrimping and I have an aversion to crimping solid cores

 

[winston1]

I have an aversion to crimping solid cores

Solder them then.

 

[crystal ball]

Thats going to take longer than the JBs

 

[EFLImpudence]

Solid cores should not be crimped but people do it, as you say.

It's already there, you didn't do it. Why change it?

 

[crystal ball]

The owners want an EICR after I do few minor jobs

 

[EFLImpudence]

Ah. Ok.

How many circuits?

Din rail connectors?

 

[crystal ball]

12, not much room in cupboard, but yes a din rail arrangement in void above would be feasible, that or 15 JBs

 

[333rocky333]

Solid cores should not be crimped

Why

 

[John D v2.0]

Sorry to hijack but what din rail connectors do you use? I was using the wago ones but it would be nice to get rewirable ones.

 

[crystal ball]

Weidmuller, I do a bit of control panel building and they have a good range of cross connectors, earth terminals etc, get them from RS usually

 

[crystal ball]

Why

I have never found a definite reason not to crimp solids, but I have seen quite a few failed connections and when I served my time, I worked to MOD specs and crimping of solids was forbidden, it has always stuck with me

 

[EFLImpudence]

Why

They are simply not meant for solid conductors.

That is the ones 'we' use which merely squash flat and are too big for the conductors.

It may not be a hazard on lightly loaded domestic circuits but you will not find any instructions for crimping where solid conductors are shown.

 

[flameport]

The owners want an EICR after I do few minor jobs

In that case, if the existing joints do not comply with BS7671, advise the owners of this and quote which regulation applies.
They can then decide if they want them changing for something else.