containment question

[martin mcguinness]

As far as I was aware cable tray is adequate containment in a plant room for non armoured cables to be ran on. I ran some 2.5mm butyl cables for immersion heaters and cable tied them to the cable tray and another electrician had stated they should be ran in armour cable as the containment isn't enough. These cables are in plain view on a tray behind various equipment so no chance of being struck by anything so can anyone point out where I went wrong. do I need to change the cables
My other concern is I have been asked to wire a workshop for a mate using cable tray at high level and plastic conduit drops to sockets and lights using t+e then running armours for the ramps and compressor by the reasoning of the electrician slagging my work this should be incorrect. has there been a change I the regs I don't know about or am I just getting old.

 

[Pete999]

support. it's containment if lidded.

Thanks for that Tel

 

[Deleted member 26818]

Must admit, I’ve always lumped tray in as containment.
If it’s flat against a wall, on the floor or upside down on a ceiling, it’s just something convenient to tie cables to.

 

[Spoon]

These cables are in plain view on a tray behind various equipment so no chance of being struck by anything

Use tray lid.

Is lid really needed in this case? I think not.

 

[Deleted member 26818]

Is lid really needed in this case? I think not.

If they insist on having them covered, might be easier and cheaper than having to remove the tray and replace with trunking or replacing the cables with armoured.
Another thing I would like to know, is whether metal tie wraps have been used?