Can Micc Be Buried?

[binky]

We have a job to do that may involve having to use MICC, for a short run to feed lights flush mounted into pavement. I was considering whether it would be suitable to run to all the buried fittings in same cable. Now the cable itself I'm fairly sure will be fine, but really can't remember how water tight the pots are ? Can they be fully immersed?

 

[Evans Electric]

I've found it buried many times Binky,  PVC covered of course . 

Fully immersed ?  I doubt it ,  possible though if you look up the standard on the glands .  I have some bumph on it somewhere .

 

[Marvo]

You do get IP66 and Ex certified glands and pots for mineral insulated which should all be fine for underground submerged use. If in doubt you use a hard soldered pot or one of the 250 degree molten glazed pot.

 

[Doc Hudson]

When I first glanced at the title I nearly moved this to 'ask the vet', thinking it was a question about a deceased pet " Can Mice be buried"?

Doc H.

 

[Evans Electric]

Binky,  I've just gone through my BICC/ Pyrotenax book  .  Theres no reference to cable being "Fully immersed"  .   Pyro is all to do with high temps really.

We did trace a fault last year on a garden power supply in Pyro , Galv conduit Tee box buried under paving , pyro end had gone down , tripping arseydee.

Managed to re-do the joint mounted above ground.

So not the best idea immersing it I think.

 

[binky]

Sounds about right Deke, and thanks for looking. As you say it's more about temperature than water. Not that I'm planning to immerse the pots, but it does rain a lot in Plymouth, so that is exactly what will happen at some point.

 

[roys]

We always use to make the pyro pot of 'high' in a junction box by keeping the pyro a bit on the long side and tightening down the compression ring further down the pyro, if you see what I mean.  This is because in a certain area of our work we were getting a fair bit of water ingress into the boxes causing faults in the pots.  By keeping the pot high in the box it kept it out of the water so to speak