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I’m doing a 48way three phase board at work with 34 circuits. How to keep it tidy without tie wraps? Or is tie wraps the way to go
 
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James

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I’m doing a 48way three phase board at work with 34 circuits. How to keep it tidy without tie wraps? Or is tie wraps the way to go
big boards like that, the only choices you have for a really neat job without spending days on it, tie wraps or if its big enough you can screw some slotted trunking down each side.
 
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  • #3
I really wanted to do it without tie wraps but I’m gonna have to give in and use them I think.
 

Charlie_

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Are all the cables coming in top entry?
Start with the largest cables at the bottom and then cascade down to the smallest at the top..
Avoid RCBOs with functional earths, better still go for one of the new Schneider boards
 
B

Bobster

Use tie wraps to form the wiring into place.

Remove when all testing is done, as long as you ran them in neat, they shouldn't move too much.

Pet peeve of mine is cable ties where they aren't needed. An if I find people tying cables together in trunking. Heads will role. Nothing worst than having to pull out a cable in trunking an finding its tied to all the others.
 
Use tie wraps to form the wiring into place.

Remove when all testing is done, as long as you ran them in neat, they shouldn't move too much.

Pet peeve of mine is cable ties where they aren't needed. An if I find people tying cables together in trunking. Heads will role. Nothing worst than having to pull out a cable in trunking an finding its tied to all the others.
The old school sparks I have worked with would have lobbed their hammer at you if they saw you putting ties around cables in trunking
 

James

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The old school sparks I have worked with would have lobbed their hammer at you if they saw you putting ties around cables in trunking
I have a similar amount of anger directed at whoever tapes up bunches of cables before pulling them down conduit.

makes it almost impossible to pull an extra one down after
 
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  • #13
It’s a Schneider. It is a nice easy job. I think I’ll tie them then cut them off when finished
 

Charlie_

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Is it the new Schneider board?
I’ve just booked a few out for a job that I need to do..
Fancy posting some pics up when you’re done?
 
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Not sure if it’s the new one. It was already mounted but yes I’ll post some pictures when it’s finished
 

davesparks

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Pet peeve of mine is cable ties where they aren't needed. An if I find people tying cables together in trunking. Heads will role. Nothing worst than having to pull out a cable in trunking an finding its tied to all the others.
At one of the theatres I work for every circuit has been individually cable tied together in the trunking every couple of metres using the cable ties that incorporate a label where the circuit number has been written.
So it is very easy to find the relevant singles in the trunking when making alterations, and not too bad to pull them out if you are moving the whole circuit. But trying to alter a lighting circuit is a nightmare, you pull the s/l and the strappers, perm live, neutral and earth all come with it.
 
D

Deleted member 26818

Not seen one of those before.
No sliders.
Shame about the earths.
 
D

Deleted member 26818

If I use tape to cover all of an exposed conductor, I run it along the length of the conductor.
Only ever wrap like that, if I’m building a loom, or making a repair.
 
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You are right about the earths. I have one that is stripes along instead of wrapped around and it does look better.
 

Pete999

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There is a Regulation governing the make up of earth sleeving I believe, although I don't have my copy of 7671 to hand.
 

Charlie_

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Some circuit numbers on each wire would be handy for servicing.
On the right hand side o would have started from the bottom and left the top ones free.
Where is the main incoming earth?
 
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  • #34
The boss wanted them putting in that way. So flat 1 top left and going down to flat 34. It’s not fully finished yet so main earth not in. If we can’t have sleeving then there is no way we are getting numbers. There is numbers on stickers on the board with the neutrals and earths
 
D

Deleted member 26818

That's what I said isn't it?
In this instance, the OP has used neutral and earth tape to change the colours of conductors.
As such the requirements for earth sleeving which relate to sleeving bare conductors would not apply.
 

darkwood

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Yep agree, cable tie, do the testing then cut them off and just open them up a bit... grouping factor and all ;)
 

Charlie_

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I really don’t like the position of the earth bar.
I would be tempted to put an earth bar down each side.
 

davesparks

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There is a Regulation governing the make up of earth sleeving I believe, although I don't have my copy of 7671 to hand.
There are rules about identification sleeving but the regs also allow identification by tape, disc or paint.
 
B

Bobster

As others have said, real nice job. However, get your boss to invest in some G/Y heat shrink for the CPC on jobs like this. Looks 100% better IMO.
 

Wilko

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Very neat, but I’ve never seen so much tape - going to be interesting after a year at operating temp perhaps?
 
I’m not a fan of binding cores in miles of insulating tape , it looks very amateur imo

A bit of 4mm 6mm colour sleeve would look the bizz
 
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49990These are the boards in the flats. I like them except for the bus bar and how it goes behind the neutral
 
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  • #56
Cables have to come in at the bottom do the board is the right height. I’m on price so I not gonna move the neutral bar
 

telectrix

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Put RCD on other side and move neutral bar over too.
Bring cables in at top instead?
that is the schneider design, same as the square D boards. L busbar is cranked behind the N. makes you thing when fitting the tails .....L is on right N on left.
 
Looking closer at the photo of the flat end. It's not glanded, just taped up.
Going to be a bugger to gland that off in the wall

Can’t see how they will do it now it’s been cut so short in the cavity

Might just need taping up with loads of earth tape and shoving back in the hole ?
 
Yes, think I’m starting to see that now.
Based on what I’ve seen so far, I’m very surprised that the submains have been wired in SWA
The last new builds I stubbied on the MC used 10mm twin and earth for his submains

Proper rough installation with sub main cables just buried the plaster
 
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  • #74
If I do another of the main boards I will be using a small amount of tape at the end not the whole length of the conductor.
 
I prefer a single band of tape near the end of the conductor, or heatshrink.
Funny you say that

When I was learning my old boss always did it using a small single loop wrap of tape about an inch before the terminal.

But then another guy who was training me up would over sleeve the entire length of the core

Horses for courses ?
 
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  • #76
I think no matter what ya do someone will say they prefer it the other way. I think if I have sleeving then sleeve the full length but not cover with tape
 

davesparks

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Funny you say that

When I was learning my old boss always did it using a small single loop wrap of tape about an inch before the terminal.

But then another guy who was training me up would over sleeve the entire length of the core

Horses for courses ?
I'm not keen on long lengths of identification sleeving like that either, it makes the bunch of cables in a DB a lot bulkier.
And I'm sure someone will say it thermally insulates each core etc etc.
 
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