Why do they do this?

tortuga said:
Klein still makes a BSP screwdriver with a extra pin offset in the bottom of handle to support 18- 24 AWG when you curled wires.
Click to expand...
Dunno about that. Is that the Klein 603-4B? From the description it sounds like it's made for us:

  • Metal stud offers a convenient and easy way to bend, loop and connect solid wire when installing outlets and switches
  • Bends 10, 12 and 14 AWG wire

-Hal
 
If the curls were a Bell requirement the only way is to find it is in the Practices. I have never seen them in their entirety and wouldn't know where to find them now or where to look if I did have them. It's several large binders that are not an indexed .pdf. 😖

-Hal
 
For us electricians, it was ever only a doorbell trick. So when the cable was destroyed, you would always have a bit more in the wall if needed... we started using 3/4" pvc for a little stucco chase at the door bell. And just used the pipe...
Who knows..
 
infinity said:
It's to leave slack. No guarantee that was done by a plumber and not an electrician. This is still better than the Mickey Mouse ears in a panel.
Click to expand...
The Mickey Mouse ears in a panel are not necessarily useless. Aboard ships, they are called burn-back loops and are specified in the notes to plans frequently, although I expect this is going away slowly. The reason being that all ABS ships are wired with LSZH cables which are finely stranded. As we know, just terminating this type of cable in a "terrestrial" panel (they use special marine panelboards on the interior of the vessel) can cause overheated/melted terminations. This is going away with the use of crimp pins or ferrules.

However, many ship systems are critical and in the case of failure due to overheating, the crew member would open the panel, cut away the melted section and re-terminate to get the circuits back on line as quickly as possible.

Mark
 
busman said:
The Mickey Mouse ears in a panel are not necessarily useless. Aboard ships, they are called burn-back loops and are specified in the notes to plans frequently, although I expect this is going away slowly. The reason being that all ABS ships are wired with LSZH cables which are finely stranded. As we know, just terminating this type of cable in a "terrestrial" panel (they use special marine panelboards on the interior of the vessel) can cause overheated/melted terminations. This is going away with the use of crimp pins or ferrules.

However, many ship systems are critical and in the case of failure due to overheating, the crew member would open the panel, cut away the melted section and re-terminate to get the circuits back on line as quickly as possible.

Mark
Click to expand...
Sorry. Re-read my post and there was a typo. They generally DO NOT use special marine panelboards on the interior of ABS classed vessels.

Mark
 
hbiss said:
I actually agree. Some slack is good for the reasons you state.

-Hal
Click to expand...
And, you can't just "tack on a few extra inches" on some cables (e.g., CAT5/6, RG6, etc.) so having slack "stored" is a win. Wire choice also plays a role -- solid being more likely to break off at an inopportune time.
 
You must log in or register to reply here.
Top