Recently I found this plastic thing on a pillar in the village:
Looks like it is not finally connected yet, just attached with tape to the pillar.
What is it's purpose?
4 cables go down to this thing:
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3\$\begingroup\$ booster for a concrete rocket ;) \$\endgroup\$– Tony Stewart EE75Sep 29 '18 at 19:44
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1\$\begingroup\$ for about 50 ~ glass fusion splices in a waterproof box \$\endgroup\$– Tony Stewart EE75Sep 29 '18 at 20:02
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This is a fiber optic splicebox. It is a weatherproof enclosure where two (or more) ends of fiber optic cables are connected.
Yes - electricity poles also carry optical fiber for control of the network and often internet access.
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We've given your photo to the forensics lab and they suspect that it is a fibre-optic data cable using the electrical power distribution poles as the cable route.
Photo 1. The enhanced image.
- The incoming cable.
- The cable clamp.
- The down-feed to the junction box where tap-off and through connections are made.
- The cable out to the next stage.
- The outgoing cables.
Photo 2. A fibre-optic junction box. Source.
The optical fibres can be run with power cables as they are insulating and there is no danger of fault currents going to ground.
answered Sep 29 '18 at 19:49
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That is a junction box which is weather proof, and is probably temporary and will be moved before it gets played with.
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1\$\begingroup\$ Yeah - you'd think it'd be temporary, but in my part of the south that kind of 'temporary' sometimes hangs around for a year or 2 ... \$\endgroup\$– brhansSep 29 '18 at 19:48
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7\$\begingroup\$ Ahh, the definition of temporary - we were moved into a "new" office as a temporary measure - 10 years later we have been moved again... \$\endgroup\$ Sep 29 '18 at 19:52
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1\$\begingroup\$ temporary ˈtɛmp(ə)rəri/ adjective Meanings: 1. permanent \$\endgroup\$ Oct 1 '18 at 0:37