Progress.....

[partpdoctor]

good lad lectrician

thought i had you then, nice job....
best wishes alan

 

[comms]

I have used paxoline between the CT chabber and the trunk - The paxoline is gutter bolted to the trunk, and the slot in the CT chamber is slighty oversized to miss these bolts

Removing the main earthing conductor is all that is required to conduct a Ze. This is actually a stipulation of our DNO - I have not done this to keep the NIC happy.

All in, it has taken 5 working days. This includes re-routing many of the cables that previously entered above to enter from the other direction, the removal of several old submains, and a rewire of the pool plant room which this is all sited in - previously clipped direct wiring - thr trunk now goes around all walls with conduit drops down to the pool pumps, calorex heat exchanger etc etc.

A good half a day was also spent running out several hundred meters of temporary cabling to various buildings spread across the site to keep them powered. We actually connected some cables directly into the DB's in some of the buildings, the others just had an array of trailing sockets from our exhibition kit. This also all had to be packed away.

Now this is the line of sparking I'd love to get in to........domestic gets sooooooooooooooo repetetive.

Nice job Lectrician

 

[RF Lighting]

domestic gets sooooooooooooooo repetetive.

That is the exact reason I quit my job

Now back on my nice specialist commercial / industrial work

Finding a Picture of the week!™ is a bit more difficult now though

 

[plugwash]

This may seem like a strange question but what exactly was wrong with the old setup?

 

[Lectrician]

Well, I could list several faults.

25mm Tails on 200amp fuses.

30mA RCD protecting a huge portion of the installation resulting in nuisance tripping.

60amp storage rad supply switched by contactor in enclosure (20amp rated, 3 poles paralleled), 3 bits of 4mm into a henley terminal.

Storage rad time clock fed via T+E with exposed single insulated, and then plugged into a socket outlet.

Tails entering ferous enclosures through seperate holes.

Poorly supported 95mm SWA.

SWA not glanded on several submains, and the armour not earthed.

A general rats nest of cables.

Main earthing conductor only 10mm

3 T+E submains perishing, and pulled from facia due to climbing plants. Very dangerous, and next to a footpath.

It is also not very well selected and errected. Commercial plant room - tails clipped direct? Umm....

There are propbably more, but thats the ones that spring to mind.


There is also a few submains with a run of over 100m each - All are 60amp, two are 25mm, and the other is a 10mm Pyro. All fail on volt drop. This is a job for the new year.

 

[LG]

Out of interest - lectrician - Whats the technique you use to line up the knockouts on the DB with the holes to be made in the trunking?

Reason i ask as i have been working with a spark who measures and marks the holes what i think a long winded way. I have, most times, knocked the required knock outs out, offer the DB upto trunking directly, and mark round the holes from in DB leaving a cirlcles on trunking - from that - take the center point.

Whats your way of doing things - as it is very neat?

 

[Lectrician]

Panelboards and MCB boards generally will not have knockouts on them - not the decent ones anyway!

BUT.... I would.....

Mark the top of the DB. Drill a pilot hole in each location on the top of the TB.

Offer up DB to wall, butting up to trunking.

Mark each pilot hole with a marker pen onto the trunk.

Drill pilot holes in trunk.

Then get your 2" holesaw doing some work