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Plonker 3

• Oct 29, 2015

• #2

Looks like a clock connection unit?

 

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D

Deleted member 26818

• Oct 29, 2015

• #3

Ditto.

 

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Octopus

• Oct 29, 2015

• #4

wot they said ^^

 

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HandySparks

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• Oct 29, 2015

• #5

All the best kitchens of a certain era used to have them. Then they invented quartz battery powered clocks.

Still available (but expensive). Also used for picture lights as it's a really low profile connector if you use the flush sort.

 

Last edited: Oct 29, 2015

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7029 dave

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• Oct 29, 2015

• #6

Yeah used to see loads of them.

 

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HappyHippyDad

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• Oct 29, 2015

• #7

Not sure what you guys mean by a clock? Are you lterally meaning clock (tick tock)? If so, completely wrong

 

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Octopus

• Oct 29, 2015

• #8

happyhippydad said:

Not sure what you guys mean by a clock? Are you lterally meaning clock (tick tock)? If so, completely wrong

View attachment 30517

Click to expand...

It's a ccu - a clock connection unit ! (Fused)

 

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micknew

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• Oct 29, 2015

• #9

Definately an electric clock point.

 

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Deleted member 26818

• Oct 29, 2015

• #10

Yep probably still to be found in the MK catalogue.
https://upload.wikimedia.org/wikipedia/commons/4/4d/UK_Clock_Connector_3_pin_Open.JPG

 

Last edited by a moderator: Oct 29, 2015

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HappyHippyDad

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• Oct 29, 2015

• #11

Murdoch said:

It's a ccu - a clock connection unit ! (Fused)

Click to expand...

Why's it called a 'clock' connection unit Murdoch? One fuse was feeding one light and the other fuse the rest of the lighting circuit.

 

Last edited: Oct 29, 2015

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micknew

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• Oct 29, 2015

• #12

They were always sold and used as clock connectors.
Never seen a double pole one though.

 

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Octopus

• Oct 29, 2015

• #13

micknew said:

They were always sold and used as clock connectors.
Never seen a double pole one though.

Click to expand...

Probably designed in the early 1950's when fuseboard s had fuses for live and neutral.

See my post on the board!

 

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HandySparks

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• Oct 30, 2015

• #14

Hmm. Well we were wrong then.

Clock connection unit is just a special type of fused plug and socket. It has a flex outlet in the bit you unplug, which I assumed was present, but not visible in the original pic.

So it's just an early type of FCU (both poles)?

 

Last edited: Oct 30, 2015

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Octopus

• Oct 30, 2015

• #15

HandySparks said:

Hmm. Well we were wrong then.

Clock connection unit is just a special type of fused plug and socket. It has a flex outlet in the bit you unplug, which I assumed was present, but not visible in the original pic.

So it's just an early type of FCU (both poles)?

Click to expand...

I have seen these used to connect bell transformers

 

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Lucien Nunes

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• Oct 30, 2015

• #16

MK did make a clock point that looked similar but with a flex outlet. It's not an FCU for connecting to an RFC - you wouldn't get the cables into its terminals - but it serves the same purpose. You might fuse down a larger radial to serve a small circuit or appliance that required protection (e.g. the bell transformer mentioned) just as we fuse a 6A circuit locally to 3A for an extractor fan. Fuses are BS646, 1, 2, 3 or 5A. It's DP because of its age, although by the 50's SP fusing was becoming standard because the ESR had declared the neutral as solidly earthed and the 11th edition was revised to align with it.

Stand-alone inline fuse units had a long history before the FCU, partly because of the tree system where fuses were located throughout the installation (i.e. not grouped at distribution boards) to minimise length and number of cable runs. A century ago they would have been a pair of pepperpots on a pattress, this was the next evolutionary step.

 

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