Consumer unit upgrade TT system

[monkeyhanger]

Appreciate a bit of advice regarding this that I'm doing in the morning-

Consumer unit upgrade in house with 6mm gas & water bonding existing (leaving bonding as it is). Existing rod in house with 6mm up to CU.

(Existing install) From a TT system in the house there is a 2.5/1.0 T&E running to a detached outhouse (perhaps, four meters from the back of the house) feeding an existing fuseboard in there with BS3036 fuses for 15A sockets radial and 5A one light.

The outhouse has a copper water pipe supplying a washing machine. This isn't bonded where it rises from the concrete floor in the outbuilding and there isn't a seperate rod in there. The only earthing of anything in there is the 1.0mm CPC of the T&E submain & CPCs of light/sockets.

Am I right in thinking that the CPC in the T&E won't suffice in the requirements for equipotential bonding in the outbuilding (it appears that the T&E is ran under the concrete back yard in plastic conduit.. many years ago). If I install a rod & earth conductor to the existing BS3036 unit in the outbuilding and bonding between this unit & the copper pipework in the outbuilding, should I insulate the 1.0mm CPC in the T&E submain from the outbuilding installation (at the outbuilding end)? Or leave it connected at both ends- in the house and the outbuilding. If either is acceptable would it be best practice to leave it connected both ends?

I am quite aware of requirements when exporting TNS and TNCS but I've never came across TT in the main building with an outbuilding where bonding is required.

This is hopefully obvious to one of you who may read this before tomorrow

 

[Geordie Spark]

The first gauge you mention rings a bell. They were used on Canadian Calcamatic kilns. They were towards the centre of the panel which means they must have been part of the combustion control. What for I can’t remember. All the burner control was by Honeywell and GE. Selsyn were part of GE.


The second “thing” I haven’t a clue. I’ve worked on plenty of drum controllers, they used to fascinate me. Both the primary crusher and the washing section used them for auto start up.
Some PLC’s now have drum function blocks. I used them for the electric furnace you’ve seen pictures of. It replaced those crappy cam timers you made.
There’s something niggling me about this controller, was it used for speed control?

I haven't a clue what they were for.

We made them for Ashmore Benson & Pease (part of the Davy Ashmore Group) and they were branded ABP.

I Imagined the dial indicators to be mounted in a large panel fixed to a wall in some sort of control room to tell an operator what was happening somewhere else.

We made chart recorders as as well - paper on a roll like bog roll passing from one roll to another while an inky pen traced a wiggly line on it.

I seem to remember seeing - and engraving - the words "STOCK LEVEL INDICATOR" on something.

A lot of the stuff was engraved in Spanish but I didn't have to have a knowledge of the language to be able to engrave it onto an instrument dial !!

Those "crappy cam timers" used Honeywell micro switches except for one batch when Burgess persuaded our boss to give theirs a try. Now THEY were crap and we ended-up replacing them FOC with Honeywell.

It was a clear case of buy cheap, buy twice!

 

[ferg]

I haven't a clue what they were for.



We made chart recorders as as well - paper on a roll like bog roll passing from one roll to another while an inky pen traced a wiggly line on it.

I remember changing the paper on something similar.

IIRC it was recording the humidity.

Testing and repairing teleprinters at the time.

 

[Knobhead]

The older chart recorders were Honeywell 12” multi pen. The later ones were 4” three pen. Can’t remember the name of them.

They got to be a bit of a problem when we went for BS9001. Before if nothing had gone wrong they were just slung in the kiln, now we had to save them. One panel alone had 56 charts, storing them became a bit of a headache.

 

[baldsparkies]

Because I want to know what the "bare minimum" is that will comply for me to be able to upgrade the consumer unit in the house and reconnect the submain. I don't want to tell them that the tenant needs to take a day off work & move all their furniture & all the flooring needs to come up etc. to put a new submain in from the front door to the outbuilding over the back yard IF IT ISN'T NECESSARY!

"What is the point in asking questions" whats the point in the tone of these replies-
"Something is certainly obvious, but i'll limit my comments to the job you are asking about"
"What do you mean by 'especially for a letting agent'? Are their lives worth less than other peoples and so it's ok to install substandard earthing ?"
"To be honest i just can't be arsed"
"He'll probably just bung a twig in and call it a day"
I think you're trying to help but equally you want to shoot me down at the same time haha

Please tell me what would be wrong with the following-
Keep existing 2.5mm submain from 20A 30mA RCBO in house.
Disconnect 1.0mm CPC of 2.5 t&e in outhouse.
Install rod & bonding in outhouse.

Be as condescending as you like if you answer the question

Argumentative lot aren't they.
How do you know any one of them actually know what they are talking about.
This is a forum, and it could be full of losers trying to beat there chests on here because they are laughed at and abused in the real world.
You know the type !! Bullied at school so become a traffic warden in later life.
Take the comments with a pinch of salt, ask no more, and find some real electricians out in the real world to ask on a face to face basis.
Trust me its the best way.
Sorry have to duck now !!
INCOMING !!!!