Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

Yes

4 (23.5%)

No

6 (35.3%)

Doesn't Matter

4 (23.5%)

Wire Nuts Are Evil

3 (17.6%)

Total Members Voted: 17

[Steve M Smith]

So why are we required to have strain relief? Probably because in many situations, the walls are left unfinished so the wiring remains exposed. Also, our construction practices often require wiring to be energized before the drywall is completed.

Ours are usually done the other way round.  The wiring is put in place and pokes out through holes in the board, then when it is fully boarded, the boxes are put in and connected up.


Steve.

[Frank DeWitt]

Ours are usually done the other way round.  The wiring is put in place and pokes out through holes in the board, then when it is fully boarded, the boxes are put in and connected up.

Steve.

When I built my house in 1984 in New York state wiring was done in 3 stages with a inspection at each stage.
1.  Meter housing and circuit breaker panel  and associated wiring installed.
       Once that was inspected then a meter would be installed by the power company and the power turned on.
2.  "Rough in wiring"  Basically what was shown in the first photo but to US code  (Wiring boxes, wiring fastened as required ETC.
        Once this was inspected the dry wall and other covering could be installed.  It was understood that a couple of circuits using this wiring would have outlets installed, and be connected and used during construction.    Usually one outlet on each floor and two or more next to the panel.
3.  Instillation of all devices.  Outlets, switches, light fixtures, ETC complete with cover plates.  The only exception was that the circuit breaker panel cover was to be displayed next to the panel to prove you had not lost it but not installed.   At this inspection the inspector has the option of checking each outlet for proper wiring with a 3 bulb tester, and asking you to remove any cover plates to check your work.  If you pass. Your wiring is complete. A report is turned over to the town and is part of the inspections need for a certificate of occupancy.

I passed. 

[Steve M Smith]

Most UK electricians are allowed to self certify their wiring now as long as they have had the correct training.


Steve.

[Stephen Swaffer]

You have strain relief on internal boxes?  What would be causing any strain?

Homeowners using wire as a clothesline in the basement, someone fishing a new wire and hooking an existing etc,

[Steve M Smith]

Homeowners using wire as a clothesline in the basement

Back in the 1960s, my mother worked in a hair stylists.  In their basement they did exactly this to hang up the washed towels to dry!


Steve.

[Lyle Williams]

There, now we have an answer to a point I made in earlier post (that probably got lost in the shuffle):

Still might be nice to have a picture of the devices with the wires installed but not completely assembled, so we can see just how the connections and strain relief work. Not that it's useful for us in the United States to know how to wire an assembly we'll probably never lay hands on, but it's still nice to know.

http://en.m.wikipedia.org/wiki/AS/NZS_3112#/image/File:Dual_3_Pin_Power_Outlet_-_Construction.jpg

There is no separate strain relief.  Not securing wiring is deliberate.  It's harder to put a nail through a wire that can move out of the way.

Plus RCD/GFCIs are mandatory down here.

[ProSoundWeb Community]