H07RN-F FLEX MAINS suitability

[pc1966]

...I think further inspection is needed. I think if they are same source of cable, they might need replacing. We've got fryers, steam ovens etc.

Yes, very good call!

H07RN is typically only rated to 60C anyway, but you can pay a bit more and get the butyl TQ flex that is 90C rated.

 

[pc1966]

OK, here it says 85C:

4.0mm² 3 core Butyl Flex 3183TQ - Black - 50M Drum

 

[Rockingit]

Its marked as Vede H07RN.

The shorter stripped end was terminated in a junction box (in 15A strip connector!) and the longer end was terminated in the appliance. These longer stripped core's, were me pulling off the outer sheathing, before I realised the cable had had it.

The cable is not very flexible!

Started to have a look at the other appliances in the kitchen, seems to be the same sort of cable. None seem to have the same rigidity as this damaged cable, but I think further inspection is needed. I think if they are same source of cable, they might need replacing. We've got fryers, steam ovens etc.

The whole point of H07RNF is its ability to be flexible and take the knocks and abuse because of it being rubber - that‘s why we use it by the mile in the events industry. Depending on the use/method it’s normally rated 60c to 85c. I‘ve also rarely seen it with a cotton core below 10mm sizes for 3c. As others said originally - I suspect what you‘ve got there is a rogue knock-off used at the initial installation - you might want to look at swapping it all out. Regardless…… it shouldn‘t have deteriorated like that.

 

[nicebutdim]

Its marked as Vede H07RN.

Vede or VDE (visible in images) which is a German standard. Is there a manufacturer's name or any more characters after 'RN'?

 

[James]

rubber is not resistant to oils, could it be airborne oil mist or fume has helped it deteriorate faster?

 

[Rockingit]

rubber is not resistant to oils, could it be airborne oil mist or fume has helped it deteriorate faster?

H07 is a funny tigger…. Inner cores are Rubber (EPR) but the outer sheath is actually Polychloroprene which IS oil resistant. And from practical experience of having retrieved enough over the years where its been used to supply catering concessions I can absolutely vouch for that!!

For even more extreme uses there’s H07 BN-F but that’s a different animal again.

 

[Midwest]

Vede or VDE (visible in images) which is a German standard. Is there a manufacturer's name or any more characters after 'RN'?

I’ll post a pic later.

 

[Midwest]

rubber is not resistant to oils, could it be airborne oil mist or fume has helped it deteriorate faster?

The appliances is situated in a vestibule between kitchen and restaurant, not subjected to oil mists etc.

 

[Midwest]

picture as requested.

 

[mattg4321]

I’d be thinking the cable is a fake/not to the standards it purports to be.