Partial fibre install - what's left?

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Xeon

302 posts

Ultimate Geek

#229064 5-Feb-2018 23:48

Hey,

We ordered fibre for new place a few weeks ago and were given a scope date in March, although the fibre seems to be mostly there. I can find fibre externally but can't follow it once it enters the building, there is an ONT installed but no fibre connected to the ONT.

There is very thin cables behind the ONT wrapped around in the wall plate - fibre? Any idea what work is left so I can confirm it's fine with property manager?

lxsw20

3552 posts

Uber Geek

Subscriber

#1952241 6-Feb-2018 00:21

Yes, that's the fibre. Work left to do, put an end on the fibre, and maybe some stuff around internal house phones. There could be some off site work still required also.

Aredwood

3885 posts

Uber Geek

#1952253 6-Feb-2018 02:15

Guessing those guys didn't have their fibre splice machine with them that day, or it was broken.

webwat

2036 posts

Uber Geek

Trusted

#1952699 6-Feb-2018 23:47

Thats not a gas main its right next to is it?

Time to find a new industry!

Aredwood

3885 posts

Uber Geek

#1953991 9-Feb-2018 01:50

webwat:

Thats not a gas main its right next to is it?

@webwat Yes that is 100% a gas main. Anyone done any experiments on whether it is possible to ignite gas using the light from a broken piece of fibre? This affects my day job. (Im a plumber/ gasfitter) As I need to know if I need to consider fibre optic splice points as an ignition source or not.

Suckerpunch

124 posts

Master Geek

#1953995 9-Feb-2018 06:52

webwat:

Thats not a gas main its right next to is it?

Yeah I'm curious to know as well for my install.

What are the risks to consider when installing fibre next to a gas source?

Thanks,

Phil.

sikchik

2 posts

Wannabe Geek

#1954019 9-Feb-2018 08:23

According to the Chorus website....

Clearances
If you're unsure about a type of power cable, contact your power or gas company or sewer and water pipes, contact your council.

Power: See the table below
Gas pipelines: (Pressures 420 – 2000 Kpa)
- Crossings: 300mm minimum
- Parallel: 450mm minimum
Sewer, Stormwater, Water etc: 150mm minimum

Source: https://www.chorus.co.nz/help-and-support/wiring-broadband/what-involved-cable-installation

Wheelbarrow01

1724 posts

Uber Geek

Trusted

Chorus

#1954034 9-Feb-2018 08:47

Aredwood:

webwat:

Thats not a gas main its right next to is it?

@webwat Yes that is 100% a gas main. Anyone done any experiments on whether it is possible to ignite gas using the light from a broken piece of fibre? This affects my day job. (Im a plumber/ gasfitter) As I need to know if I need to consider fibre optic splice points as an ignition source or not.

I once aimed a laser light at a 9kg gas cylinder with the valve open. It did not ignite.

But seriously, there can be a risk of ignition of ambient gases by high intensity light sources, but in the literature I have read, they were referring to environments such as mines and gas plants where I'd imagine the concentration of gases is potentially many times higher than the air outside a domestic property.

Google "can a fibre optic cable ignite gas" - it will provide plenty of web pages and scientific reports on the topic, although the literature I looked at did all refer to industrial situations.

[EDIT: corrected spelling]

The views expressed by me are not necessarily those of my employer Chorus NZ Ltd