Cable Tray Load Capacity Explained

[@michaelcostello6991]

Very helpful video for an apprentice or electrician . Thank you

[@efixx]

👍🏻

[@tombrown3533]

I've always worked on the assumption max loading per m was based on supports every meter. Spacing supports at 1.2 means you lower the recommended max loading weight.

[@efixx]

Thanks for commenting! 😊

[@robbiedix6775]

I have never installed cable tray in an industrial environment, I normally install ladder rack.

[@stevecraft00]

I installed some 300mm tray recently, but shortly after installation it was buried behind air handling units and associated pipework so the only way to pull cables along it was to crawl along it. I think it's strong enough...

[@leestorey18]

What about manufactured brackets like using unistrut and studs, because everyone on site says it must be space 1200mm but no-one can show me where it come from

[@efixx]

Great question, stay tuned...

[@robbiedix6775]

@@leestorey18 It is normally in the cable rack manufacturers catalog.

[@mathiasjacobsen3355]

When in installing several trays at 3 m length, i use 3 supports. 1 in the middle, 1 at each end spaced 0.5 m from end cable tray. A bit more rigid than using 2 supports.

[@efixx]

Spot on spacing that, way better than splitting it into thirds. 💪

[@russellslater4037]

Joe, Mathemagics, yes please ;-)

[@andrewrangecroft805]

Been on a site in finland, all the tray work was bending from overload. Support distance were to great.

[@efixx]

This is what we're trying to avoid...

[@russellham2094]

It's exceeded when it starts to sag.....

[@Sparks66]

😂😂😂😂

[@efixx]

🤦‍♂️

[@averagedev7768]

I went a different route, wait for it to fall, and then duouble the support there. Not the best but its faster enought

[@lewisbrand]

A cable tray is a heat radiator, not just something to strap heat producing cables ad infinitum to

[@tonywatson1412]

Everyone has to shown and told EVERYTHING these days....im 75 ...i can look at stuff , and deduce ...nah. that wont do ...i can see angels and problams...young people are thick

[@efixx]

You can see angels?!

[@TheBigstve]

Young people are thick what a uneducated response, probably a dinosaur who never under gone any CPD or dont understand earthing, just one those guys who earth everything and make the situation worse 😂😂

[@johnwarwick4105]

Don’t forget to allow for the odd electrician crawling about on there as well when you get up yo the wider tray size.