Trunking vs tray

[plugsandsparks]

Agree, they are not either or but both and .
Trunking is much more efficient for loads of ccts run in singles and back to the DB.
Tray is great for SWA and then running off the wall to the machines.
Trunking to conduit for singles looks the best for sockets, light switches and isolaters, espeically in bright galv. but i often use tray and swa as its quicker.
All IMHO of course

 

[Engineer54]

You use the right containment for the wiring/cabling method used. Multi core cables favour tray/basket installations, whereas a trunking/conduit containment system favours a singles wiring system!! Can't say i've ever used a metal trunking/conduit containment system as a whole, for multi core cable wiring, such as the SY cable that you used....

 

[Spoon]

We have started using these trays (Uniklip) from Unitrunk in our installs. Cable Tray - fast fitting Uniklip System: Unitrunk
They just clip together so save a lot of time. Also doesnt need earth links. We always purchase all the bends we need, some of the installation guys whinge if we dont supply them.

 

[Andy78]

Example of ladder racking...

 

[Guest111]

i love doing the metalwork stuff lol , i'd do containment for the rest of my career given the choice , hate all that faffing with wires & such ;-)
i have a dewalt cordless grinder so i can cut into existing tray already bolted to the ceiling , and quite frankly its the most useful gadget i've ever bought

I'll second that,the last firm I worked for bought me a Dewalt cordless grinder,don't think I've used a plug in since,brilliant piece of kit.

 

[Guest111]

How do you find the power compares to a corded? I have been umming and arring about a cordless for a while now but haven't had the opportunity to use one. The last one I used was some years ago and it was rubbish! I couldn't say what voltage or type the batteries were though.

The trick with the cordless is to use the 1mm INOX discs less power required and a neater cut,once you've used them you'll never use the thicker discs again.

 

[wade88]

Don't half get through them though. Inox are for stainless really (acier inoxydable, french synonym for stainless steel) but you get a laser cut on mild

 

[Guest111]

Stainless being harder than mild steel you should get more cuts in mild than stainless if using a stainless disc

 

[wade88]

Still don't get many!

 

[Engineer54]

Example of ladder racking...

View attachment 17243View attachment 17244View attachment 17245

That's a nice ladder install, but tell me, why did you bunch the SWA cables up like that??

 

[Andy78]

Mainly to make room for the others that hadn't gone in yet. The SWA feeds were installed in phases over about 24 months. I didn't do the calcs myself as I was working for a firm at this time, but I'm pretty sure it will have been taken into account.
The installation method was decided by the lead sparks on the job, also not me.

 

[Guest55]

Mainly to make room for the others that hadn't gone in yet. The SWA feeds were installed in phases over about 24 months. I didn't do the calcs myself as I was working for a firm at this time, but I'm pretty sure it will have been taken into account.
The installation method was decided by the lead sparks on the job, also not me.

whats in the warehouse that needs so many cables going in / out ?
i take it steel inspection panels going over the trench ?

 

[Andy78]

Yeah very thick steel panels went over the trench as it was a lorry yard, and the rise got cladded with aluminium sheet.
The project was a complete overhaul of a small industrial park's distribution. These were the sub mains leaving the switch/transformer room. The larger ones went to panel boards and the smaller ones went to some of the larger units' D/Bs.
Nice job to work on.

 

[wade88]

Yea...nice ladder Andy.

I work alongside Aggreko on my summer season work doing site power at festivals and stuff. It's such great work and there is a really OCD fascination that comes with laying your heavy distro out so neat. Couple hundred meters of power lock all laid out like this is a thing of beauty.

 

[pennywise]

Nice and neat nice when a jobs planned:hurray:, didn't they supply you with PVC covered builders band