Flexible Conduit (N.Bundy job)

[Mike Johnson]

Interesting posts, in Europe where flexible conduit is used extensively there is legislation that does not allow filling a conduit to over 2/3rds of its cross section, this equates to a maximum of 3 x 2.5 singles in a 20mm flexible, I don't know the c/c of T&E, but think it would probably come to more than a 2/3rds of the internal area of a 20mm flexible at 52mm2, anyone know the official cross sectional area of T&E?

 

[nicebutdim]

Plastic clips, and the passing of buckle clips, has in my opinion caused the trade to turn into a bash it in and ignore the ascetics of installation work...

The old house I grew up in was wired in the 50s with VIR and buckle clips. None of that wiring was on display, but the installers didn't care that no one would see it - everything was carefully clipped with fastidious neatness and the pride taken in that work was clear to see. Some later additions were also installed with thought and care, but much of the later wiring was thrown in without care for anything other than getting paid and getting out.

 

[Dustydazzler]

containment was designed to house single insulated cable ?

twin and earth was designed with its own incorporated an outer sheath so to be ‘clipped direct’

so why are we bothering to contain twin and earth cable

???

 

[Pete999]

containment was designed to house single insulated cable ?

twin and earth was designed with its own incorporated an outer sheath so to be ‘clipped direct’

so why are we bothering to contain twin and earth cable

???

Time is money DD

 

[Dustydazzler]

Time is money DD

does it really take that much longer to neatly clip 10 cables rather than struggle to ram it throughplastic conduit

 

[7029 dave]

containment was designed to house single insulated cable ?

twin and earth was designed with its own incorporated an outer sheath so to be ‘clipped direct’

so why are we bothering to contain twin and earth cable

???

I loved surface work clipping cables, always bought white t&e, which was used a lot.

 

[Pete999]

does it really take that much longer to neatly clip 10 cables rather than struggle to ram it throughplastic conduit

Depends on the type of clip DD, they don't teach proper clipping these days at instant Sparky School, sadly bo longer considered a necessary skill, just pay up and pass the tests.

 

[nicebutdim]

containment was designed to house single insulated cable ?

twin and earth was designed with its own incorporated an outer sheath so to be ‘clipped direct’

so why are we bothering to contain twin and earth cable

???

Might be considered neater. Could take up less space if properly thought out. Allows for future boarding of that garage ceiling.

It's not necessary, but might be something to discuss with a customer when quoting for a job. Some will be happy with clipped cables, but others might prefer paying more to place them out of sight.
[automerge]1597498900[/automerge]

Depends on the type of clip DD, they don't teach proper clipping these days at instant Sparky School, sadly bo longer considered a necessary skill, just pay up and pass the tests.

I doubt it's quite so clear cut. Certainly an apprenticeship should provide more opportunities to learn a craft, but plenty of people time served tradespeople don't seem to care much for attention to detail. People will either have the inclination to do things to a decent standard or they wont. The rough electrical work I grew up around was installed long before faster routes were available into the trade.

 

[ipf]

containment was designed to house single insulated cable ?
twin and earth was designed with its own incorporated an outer sheath so to be ‘clipped direct’
so why are we bothering to contain twin and earth cable
???

Neatness and time saving.
T+E was designed to be clipped direct but why should it be?
What about entering or exiting dado trunking with cavity walls, for example?
In this (through garage) situation, with all outgoing cables from a CU, I'd have installed plastic trunking thirty years back.......T+E or not.
It's a matter of looking at the best possible method of rearranging wiring routes in an existing property.... not wiring from scratch, when various means of clipping could well have provided the best method.
We still see methods for improving aesthetics from the 1920's even,......remember capping and casing?

 

[MJPD29]

The old house I grew up in was wired in the 50s with VIR and buckle clips. None of that wiring was on display, but the installers didn't care that no one would see it - everything was carefully clipped with fastidious neatness and the pride taken in that work was clear to see. Some later additions were also installed with thought and care, but much of the later wiring was thrown in without care for anything other than getting paid and getting out.

The house I currently live in still has all that old wiring beneath the stairs to where it would have connected the the board at one stage and its like a work of art i dont can't bring myself to remove it