Cable tray

[daser66]

Hi guys
Could someone please tell me what distance apart the threaded rod supports should be on a 150mm tray.
Thanks

 

[telectrix]

i don't think there;s a hard and fast rule. i reckon about 6-7-ft. ( thats around 2 french revolutionary made up metres)

 

[Andy78]

Hi guys
Could someone please tell me what distance apart the threaded rod supports should be on a 150mm tray.
Thanks

Less than 150mm. Otherwise they'll be outside the tray.

 

[Darkwood]

Its actually a very simple question which has a very complex answer, too many variants here to give a rule of thumb even-

-Type of tray (light, medium or heavy duty)
-Load on tray (Plus possible future additions)
-The material your fixing to.
-Any changers to the tray run like bends, lifts and drops etc may need additional support.
-Method of support (using rods can be done in various ways like direct to tray or a trapeze set-up that the tray sits on and often the better option of these particular 2 methods)

....to name a few considerations

Manufacturers usually have a PDF for guidance so just find out who makes it and look it up online.

 

[telectrix]

they should be outside the tray, supporting 8" pieces of unistrut. the strut then supports the tray. how else can you get rid of all those zebedees lying round in your kit?

 

[Leesparkykent]

http://www.schneider-electric.co.uk...ay_and_ladder_best_practice_guide_2012-11.pdf

Page 63 onwards. Basically you need to calculate the weight of the tray plus weight of the cables to be installed then use the manufacturers data of the supports to space them according to the weight of load. You also need to consider the location its to be installed and allow for any external influences likely to be incurred...Like wind etc if installed outside for example.

 

[Deleted member 26818]

Would be nice to know the diameter of the threaded rod, always assuming that threaded rods will be suitable.

 

[LeeH]

Stud is so yesterday. Look at the Gripple type hangers.

 

[Andy78]

Stud is so yesterday. Look at the Gripple type hangers.

Do you mean the gripple devices that hold steel cable ?

 

[Rpa07]

Stud is so yesterday. Look at the Gripple type hangers.

But how will we ever get rid of those lengths of threaded bar we have in our store houses - darn progression!

 

[LeeH]

Yes Andy.

Gripple do a full range of hangers for basket, trunking and even ladder. Although with ladder it will still require some strut to tie it in if large fault currents are possible.

It's quicker (can be a lot quicker) but higher purchase costs.

All the cool kids are using it...you know, the sparks who wear camo snickers pants and sun glasses.

 

[westward10]

Yes Andy.

Gripple do a full range of hangers for basket, trunking and even ladder. Although with ladder it will still require some strut to tie it in if large fault currents are possible.

It's quicker (can be a lot quicker) but higher purchase costs.

All the cool kids are using it...you know, the sparks who wear camo snickers pants and sun glasses.

I tried to be cool like that in the summer and got arrested.

 

[Wilko]

Gee, is bad dress sense an arrestable offence now? I'd better stay home then.

 

[LeeH]

He missed out the fact his snickers were crotchless.

 

[westward10]

He missed out the fact his snickers were crotchless.

Worn commando style

 

[Andy78]

I actually am sporting crotchless work trousers right now. The missus will be stitching them this weekend though. The rip has been getting bigger and nearly had a few "incidents" in front of customers this week.

As for the gripple tray supports, I'll leave them to the cool kids. I like my tray non-swingy.

 

[KennyKen]

Used the gripple wire and assesories when working on a Hospital which was built on a seismic fault line. No stud allowed just double sided strut with fabricated plates used as Hangers. gripple wire for every other bracket. Expansion joints every 20 meters!! Nightmare