Fibre "dropwire" construction

Does Fibre Dropwire have any metallic strengthening wires within overall sheath, in the same/similar way that single-pair dropwire or two-pair dropwire has?

Just curious, since in the event of a near lightning strike, metallic strengthening wire would bring induced voltages in the house in the same way as copper dropwire with the steel strengtheners does.

Cheers!

If it’s the combined fibre/copper dropwire, then yes, it has support wires ( and of course a copper pair too, which would happily conduct the lightning )

The now preferred ‘ROC’ overhead cables are, I believe, metal free.

Thanks Zarjaz.

Cheers!

This is the Dropwires we use for Openreach PIA installations. No metal but 2 strengthening cores, one either side of the fibre.

Can be used both underground and overhead as a drop from the CBT, comes in various lengths

https://www.comtecdirect.co.uk/product/corning-roc-o...

In reply to a post by connormill:

This is the Dropwires we use for Openreach PIA installations. No metal but 2 strengthening cores, one either side of the fibre.

Can be used both underground and overhead as a drop from the CBT, comes in various lengths

https://www.comtecdirect.co.uk/product/corning-roc-o...

Out of interest can a field fit SC connector still be fitted to the end of ROC type cable?

Edit: For clarity is it possible with the different profile of the cable.

Edited by deleted (Mon 17-Jan-22 09:40:29)

Noting that a wet piece of string can look like a good conductor to a lightning strike and lightning without rain is rare in the UK.

In reply to a post by dect:

]Out of interest can a field fit SC connector still be fitted to the end of ROC type cable?

Edit: For clarity is it possible with the different profile of the cable.

Field fit connectors have been phased out in favour of the inside out cable with a factory fit connector on the end and an external splice in the csp to eliminate the many failures associated with field fit connectors.

Also to answer your question, no, they will never fit on to the flat ROC cable.

In reply to a post by TheInstaller:

to answer your question, no, they will never fit on to the flat ROC cable.

Thought so but just wanted it confirmed, many thanks

Surely you’d want to strip the black external sheath (and strength members) away before:
a) running it indoors (external grade cables are never a good call inside)
b) attempting to put any sort of field fit connector on the end. Anything larger than a 3mm OD sheath that was perfectly round would be impossible? Surely.

True, but just wondering whether I can argue that the wet roof and house would act as a Faraday cage?

I lost a DrayTek modem/router and a VoIP ATA in June 2018 during a thunderstorm. It certainly wasn't a direct hit and nothing else was damaged, which strongly suggested that a surge had come in via the telephone line which from the DP pole opposite is overhead.

Cheers!