....that is the question.
I'm at the stage of wiring up the control & power boxes for my homebuilt
kiln. Uses a couple of 40A contactors, some low-current switching
relays, a homebuilt over-temperature 'safety' circuit and a commercial
kiln controller module.

The heavy-duty stuff is din-rail mounted - max current is c. 30A @ 240v.

Just wondering - is it preferable to terminate the wiring into the
din-rail-mounted components with crimp-on ferrules (I have the proper
ratchet crimp-tool) in order to keep things neat & tidy - or wouldn't
you bother ?

The wiring will be a mix of flexible multi-strand and 'standard' mains
cable...

Instinct says 'crimp it' - as it's not a lot more effort, and reduces
the risk of stray strands of wire hanging about...

Thanks in advance

On 01/02/2014 17:28, Adrian Brentnall wrote:
...that is the question.
I'm at the stage of wiring up the control & power boxes for my homebuilt
kiln. Uses a couple of 40A contactors, some low-current switching
relays, a homebuilt over-temperature 'safety' circuit and a commercial
kiln controller module.

The heavy-duty stuff is din-rail mounted - max current is c. 30A @ 240v.

Just wondering - is it preferable to terminate the wiring into the
din-rail-mounted components with crimp-on ferrules (I have the proper
ratchet crimp-tool) in order to keep things neat & tidy - or wouldn't
you bother ?

The wiring will be a mix of flexible multi-strand and 'standard' mains
cable...

Instinct says 'crimp it' - as it's not a lot more effort, and reduces
the risk of stray strands of wire hanging about...

Ferrules are a good idea for when you want multi strand wire into a
screwed connection. Not necessary for the solid core.



--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

On 01/02/2014 18:34, John Rumm wrote:
On 01/02/2014 17:28, Adrian Brentnall wrote:
...that is the question.
I'm at the stage of wiring up the control & power boxes for my homebuilt
kiln. Uses a couple of 40A contactors, some low-current switching
relays, a homebuilt over-temperature 'safety' circuit and a commercial
kiln controller module.

The heavy-duty stuff is din-rail mounted - max current is c. 30A @ 240v.

Just wondering - is it preferable to terminate the wiring into the
din-rail-mounted components with crimp-on ferrules (I have the proper
ratchet crimp-tool) in order to keep things neat & tidy - or wouldn't
you bother ?

The wiring will be a mix of flexible multi-strand and 'standard' mains
cable...

Instinct says 'crimp it' - as it's not a lot more effort, and reduces
the risk of stray strands of wire hanging about...

Ferrules are a good idea for when you want multi strand wire into a
screwed connection. Not necessary for the solid core.



Thanks John!
I guess that if there's a solid core plus a multi-strand in the same
connection then it's ok to ferrule the multi but not the solid core ?

Adrian Brentnall wrote:
Ferrules are a good idea for when you want multi strand wire into a
screwed connection. Not necessary for the solid core.



Thanks John!
I guess that if there's a solid core plus a multi-strand in the same
connection then it's ok to ferrule the multi but not the solid core ?

Trying to put more than one ferrule terminated cable under a single
screw is, I think, a bad idea.

--
Chris Green
·

On 01/02/2014 19:43, Adrian Brentnall wrote:
On 01/02/2014 18:34, John Rumm wrote:
On 01/02/2014 17:28, Adrian Brentnall wrote:
...that is the question.
I'm at the stage of wiring up the control & power boxes for my homebuilt
kiln. Uses a couple of 40A contactors, some low-current switching
relays, a homebuilt over-temperature 'safety' circuit and a commercial
kiln controller module.

The heavy-duty stuff is din-rail mounted - max current is c. 30A @ 240v.

Just wondering - is it preferable to terminate the wiring into the
din-rail-mounted components with crimp-on ferrules (I have the proper
ratchet crimp-tool) in order to keep things neat & tidy - or wouldn't
you bother ?

The wiring will be a mix of flexible multi-strand and 'standard' mains
cable...

Instinct says 'crimp it' - as it's not a lot more effort, and reduces
the risk of stray strands of wire hanging about...

Ferrules are a good idea for when you want multi strand wire into a
screwed connection. Not necessary for the solid core.



Thanks John!
I guess that if there's a solid core plus a multi-strand in the same
connection then it's ok to ferrule the multi but not the solid core ?

If you have the terminal capacity, and do them up tight.

--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

On Sat, 01 Feb 2014 23:58:43 +0000, John Rumm
wrote:

On 01/02/2014 19:43, Adrian Brentnall wrote:
On 01/02/2014 18:34, John Rumm wrote:
On 01/02/2014 17:28, Adrian Brentnall wrote:
...that is the question.
I'm at the stage of wiring up the control & power boxes for my homebuilt
kiln. Uses a couple of 40A contactors, some low-current switching
relays, a homebuilt over-temperature 'safety' circuit and a commercial
kiln controller module.

The heavy-duty stuff is din-rail mounted - max current is c. 30A @ 240v.

Just wondering - is it preferable to terminate the wiring into the
din-rail-mounted components with crimp-on ferrules (I have the proper
ratchet crimp-tool) in order to keep things neat & tidy - or wouldn't
you bother ?

The wiring will be a mix of flexible multi-strand and 'standard' mains
cable...

Instinct says 'crimp it' - as it's not a lot more effort, and reduces
the risk of stray strands of wire hanging about...

Ferrules are a good idea for when you want multi strand wire into a
screwed connection. Not necessary for the solid core.



Thanks John!
I guess that if there's a solid core plus a multi-strand in the same
connection then it's ok to ferrule the multi but not the solid core ?

If you have the terminal capacity, and do them up tight.


I find that when flexes are ferruled in a 13A plug, the screw seems to
need re-tightening after a while because the ferrule "gives" a little.
This doesn't happen nearly as much if the un-ferruled copper is
doubled over and pushed in the terminal in the time honoured way.


--
Graham.


%Profound_observation%