BTW line work around

[Adie moore]

lady I've just been out to quote for wants, among other things, a new slave socket. outside the house is a junction box joining the supply cable to the master on the other side of the wall. going through the wall is a 3 pair cable. can I use the spare cores to come back out to the junction box and take my slave extension from there?

cheers, adie

 

[Adie moore]

stupid predictive text. can't edit the title now, should obviously read BT

 

[Richard Burns]

You are not meant to, all your connections should be from the master socket or after it, not before it.

 

[freddo]

No that cable is property of BT and must not be tampered with in any way. Run a new cable, if it's run outside use outdoor cable. Join to indoor cable if you need to run it through the inside of the house.

 

[Adie moore]

it was the ownership part I was wondering about. I was just trying to avoid drilling out through render. as I thought though. thanks guys.

 

[freddo]

Drill in?

 

[Adie moore]

I'm not good enough to hit a 20mm hole in the back of a knock out box from the other side of a external wall.

 

[sparksburnout]

If the master socket is mounted on a knock out box BT would not have installed it, they only install surface mounted boxes. It is probably a historic external JB that someone else has extended? I wouldn't lose sleep over it personally! Just remove the cable and open up the existing hole, then come out again using external telephone cable(drop wire)

 

[HandySparks]

I'm not good enough to hit a 20mm hole in the back of a knock out box from the other side of a external wall.

I've started using a 22mm diamond core bit to avoid blowing the render or the face of the bricks off. (Won't go through a 20mm knockout though, and I haven't found a 20mm core yet.)

 

[sparksburnout]

I hate it when you see that, half the brick face on the floor outside following an internal SDS assault, plumbers seems to be the worst culprits. Personally I put a depth stop on a pilot bit and switch to hammer off with about 15mm to go, takes a bit longer but makes a decent job as you can finish off from both sides with the bigger bit.

 

[Midwest]

Or you drill a teeny weeny hole first, followed by a bigger one

 

[HandySparks]

Or you drill a teeny weeny hole first, followed by a bigger one

There's a limit on how teeny weeny you can go with a 400mm SDS bit. Even a 10mm is good enough to blow the face off the brick in my experience.

 

[sparksburnout]

There's a limit on how teeny weeny you can go with a 400mm SDS bit. Even a 10mm is good enough to blow the face off the brick in my experience.

Absolutely. Even a 6mm pilot drill will blow the face off a brick if you just go at it like a madman. You just get a feel for it, coupled for a determination not to walk outside and see the dreaded result of a hasty SDS assisted gung-hoe attempt.

 

[freddo]

Can't be worse than the time I chiselled a 2"x2" hole to get a load of cables under the floor of a house from the utility room, it was winter and dark outside. Once I had cleared the hole, I couldn't understand how there were plants growing under the floor, and that they were so green without sunlight! Then it hit me, I had made the hole too far over. I went outside with a torch and in making the hole I had also knocked a large section of render off of the wall, the patch was about 1' wide by 1.5' high. oops.