Perforated Cable Trays Vs Rodents

I guess if you're enclosing the cables so the perforated tray form one side of the enclosure and are worried about mice getting through the holes ... mice can get through extraordinarily small gaps - the usually saying is that a gap the size of the width of a pencil is enough - although I think that's referring to the smaller dimension of a long/thin rectangular gap rather than say a circular one. Still warm dry sheltered places are very attractive to rodents and they can be very persistent, so I might be tempted by something a more solid (trunking say).

   - Andy.

We can say that if the perforation size is 2.5x1cm and the cover is solid, the installation is not safe from rodent attacks, as long as the cables are not armoured?

We can say that if the perforation size is 2.5x1cm and the cover is solid, the installation is not safe from rodent attacks, as long as the cables are not armoured?

I'd certainly expect mice and small to medium rats to be able to get into a 2.5*1cm aperture and set up home on the other side, but not squirrels, large rats, or rabbits.
All of these species have continuously growing teeth that they like to knaw down when they get uncomfortably long, and that is often making holes in random bits of wood or or stripping any soft skin cables. and even on SWA they can expose the armour, and if they nest and then also use the area as a loo, the exposed metal then corrodes surprisingly fast.

regards,

Mike.

(Ps luckily for us kangaroo damage is not a problem in the UK.)