Just found out that extending a ring main with junction boxes is now no
longer allowed in the IEE regs.

Uh Oh.

I have to use junction boxes otherwise I would have to remove fitted
wardrobes and the entire bathroom.

Whats wrong with junction boxes? The floorboard above them will be
screwed in place and not nailed and marked as an access point for the
junction boxes.

Any comments?

Whats wrong with junction boxes?

Nothing.

The floorboard above them will be screwed in place and not nailed
and marked as an access point for the junction boxes.

Any comments?

Nope. Sounds fine to me. However, I would crimp instead. More reliable and
doesn't require periodic inspection.

Christian.

Rob wrote:
Just found out that extending a ring main with junction boxes is now no
longer allowed in the IEE regs.

Who/what/where does it say that?

--
Chris Green

The phrase

"N.B. This method is now excluded from the IEE Wiring regulations, but
remains for reference. "

fro this site

http://www.diynot.com/pages/el/el014.php

"Rob" wrote:
The phrase

"N.B. This method is now excluded from the IEE Wiring regulations, but
remains for reference. "

fro this site

http://www.diynot.com/pages/el/el014.php


I think I'd rather rely on this:
http://www.tlc-direct.co.uk/Book/4.4.3.htm

Al

In article .com,
"Rob" writes:
Just found out that extending a ring main with junction boxes is now no
longer allowed in the IEE regs.

You found out from an unreliable source.

Whats wrong with junction boxes? The floorboard above them will be
screwed in place and not nailed and marked as an access point for the
junction boxes.

They have to remain accessible, otherwise use crimps.

--
Andrew Gabriel

"Andrew Gabriel" wrote in message
.. .
In article .com,
"Rob" writes:
Just found out that extending a ring main with junction boxes is
now no
longer allowed in the IEE regs.

You found out from an unreliable source.

Whats wrong with junction boxes? The floorboard above them will
be
screwed in place and not nailed and marked as an access point for
the
junction boxes.

They have to remain accessible, otherwise use crimps.

On the subject of crimps

1) What's the correct way to join 3 conductors (e.g. to create a spur
from a ring main) - one size up butt conector? piggy back spade
connector ? ring terminal and bolt?

2) how do you finsh the job off? Heat srink? Place in an enclosure of
some sort? wrap in insulation tape? Presumably where the outer cable
sheath has been removed the wires need to be protected by something?

Jim

Jim Ingram wrote:

On the subject of crimps

1) What's the correct way to join 3 conductors (e.g. to create a spur
from a ring main) - one size up butt conector? piggy back spade
connector ? ring terminal and bolt?

2) how do you finsh the job off? Heat srink? Place in an enclosure of
some sort? wrap in insulation tape? Presumably where the outer cable
sheath has been removed the wires need to be protected by something?

Jim

And, a piece of 2.5 T&E has two different thickness wires - the L&N and
earth. Do you use the same size crimp on all three? Or drop a size for
the earth? And if you drop a size, what do you do when crimping 1.5mm
(and there isn't a next size down readily available)?

Rod

"Rod" wrote in message
...
Jim Ingram wrote:

On the subject of crimps

1) What's the correct way to join 3 conductors (e.g. to create a spur
from a ring main) - one size up butt conector? piggy back spade
connector ? ring terminal and bolt?

2) how do you finsh the job off? Heat srink? Place in an enclosure of
some sort? wrap in insulation tape? Presumably where the outer cable
sheath has been removed the wires need to be protected by something?

Jim

And, a piece of 2.5 T&E has two different thickness wires - the L&N and
earth. Do you use the same size crimp on all three? Or drop a size for
the earth? And if you drop a size, what do you do when crimping 1.5mm
(and there isn't a next size down readily available)?

Rod

It's a shame these haven't been answered. My experience of screw terminal
isn't that good in that copper appears to creep and things can get hot as a
result of the loosening. I am aware of crimp connectors for automotive use
yet a quick glance at the likes of Screwfix haven't come up with any
suitable crimps for fixed installations. Can someone point me in the right
direction for crimp connectors and possible housings?

In article , "Fred"
says...

"Rod" wrote in message
...
Jim Ingram wrote:

On the subject of crimps

1) What's the correct way to join 3 conductors (e.g. to create a spur
from a ring main) - one size up butt conector? piggy back spade
connector ? ring terminal and bolt?

2) how do you finsh the job off? Heat srink? Place in an enclosure of
some sort? wrap in insulation tape? Presumably where the outer cable
sheath has been removed the wires need to be protected by something?

Jim

And, a piece of 2.5 T&E has two different thickness wires - the L&N and
earth. Do you use the same size crimp on all three? Or drop a size for
the earth? And if you drop a size, what do you do when crimping 1.5mm
(and there isn't a next size down readily available)?

Rod

It's a shame these haven't been answered. My experience of screw terminal
isn't that good in that copper appears to creep and things can get hot as a
result of the loosening. I am aware of crimp connectors for automotive use
yet a quick glance at the likes of Screwfix haven't come up with any
suitable crimps for fixed installations. Can someone point me in the right
direction for crimp connectors and possible housings?



http://www.screwfix.com/app/sfd/cat/...75317&ts=30365

Sizes are given under Specifications. Cover it with heatshrink
sleeve and you won't need a housing.

In article ,
Fred wrote:
And, a piece of 2.5 T&E has two different thickness wires - the L&N and
earth. Do you use the same size crimp on all three? Or drop a size for
the earth? And if you drop a size, what do you do when crimping 1.5mm
(and there isn't a next size down readily available)?

It's a shame these haven't been answered. My experience of screw
terminal isn't that good in that copper appears to creep and things can
get hot as a result of the loosening.

Then you're not tightening them correctly - it's as simple as that.

Use a screwdriver with the same blade width as the screw, and tighten
firmly. If a single cable into a terminal designed for three, double it
over. If you're worried about stripping threads, practice first. And use a
screwdriver in good condition to avoid damaging the slot.

--
*I believe five out of four people have trouble with fractions. *

Dave Plowman London SW
To e-mail, change noise into sound.

On 15 Apr 2005 01:57:18 -0700, "Rob" wrote:

Just found out that extending a ring main with junction boxes is now no
longer allowed in the IEE regs.

Uh Oh.

I have to use junction boxes otherwise I would have to remove fitted
wardrobes and the entire bathroom.

Whats wrong with junction boxes? The floorboard above them will be
screwed in place and not nailed and marked as an access point for the
junction boxes.

Any comments?

Would it be possible to use additional sockets instead of a junction
box? That way you'd make sure the connections are accessible, as well
as gaining more sockets!

--
Frank Erskine