terminating 70mm swa into 3ph board, best way?

[vde-electrician]

plan to install a 70mm swa into a 3 phase board.
my idea is to install a schneider acti 9, 3 phase board, with standard incomer etc, and install a schneider extension box below it. incomer or mcbs will only take say 25mm, so planning on using the extension box to reduce the 70mm swa down to say 25mm or 35mm with inline shearbolt connectors with heat shrink over. Thought using these i wouldn't need a hydraulic crimper. Do these conductors need to be fastened back via din rail, or is my method acceptable? whats your thoughts?

 

[buzzlightyear]

I have never heard any thing dafter ,I'm trying to get a python in the box ,but will a grass snake do .

 

[Leesparkykent]

Why don’t you just use an External incomer kit?

 

[KEV 1 N]

 

[buzzlightyear]

delete .

 

[bigspark17]

What ocpd is protecting the 70mm swa?

 

[buzzlightyear]

What ocpd is protecting the 70mm swa

traveling circus .

 

[buzzlightyear]

what is the 70mm swa feeding .

 

[vde-electrician]

Why don’t you just use an External incomer kit?

strugglng for space, you mean like one of these... ? Schneider Electric MGE1003X MCCB TPN Enc100A 70kA - https://www.tradesparky.com/circuit-protection/circuit-breakers/mccb/schneider-mge1003x-mccb-tpn-enc100a-70ka

 

[vde-electrician]

what is the 70mm swa feeding .

a db , what do you think is the best way? struggling for space thats all

 

[vde-electrician]

ocpd will be be 63A tp mcb

 

[vde-electrician]

What ocpd is protecting the 70mm swa?

ocpd will be be 63A tp mcb

 

[Leesparkykent]

strugglng for space, you mean like one of these... ? Schneider Electric MGE1003X MCCB TPN Enc100A 70kA - https://www.tradesparky.com/circuit-protection/circuit-breakers/mccb/schneider-mge1003x-mccb-tpn-enc100a-70ka

No like one of these that bolts to the acti9 board.

SEA9NI2504 | SCHNEIDER Acti9 250A 4P Switch Disconnector | BPX - https://www.bpx.co.uk/store/product/sea9ni2504.aspx

Use it in place of the extension box If you haven’t got room for both the external incomer kit and extension/spreader box. 70mm isn’t that difficult to manipulate in to position.

 

[Andy78]

ocpd will be be 63A tp mcb

Why was the 70mm opted for out of interest ? How long is the run ?

 

[vde-electrician]

No like one of these that bolts to the acti9 board.

SEA9NI2504 | SCHNEIDER Acti9 250A 4P Switch Disconnector | BPX - https://www.bpx.co.uk/store/product/sea9ni2504.aspx

Use it in place of the extension box If you haven’t got room for both the external incomer kit and extension/spreader box. 70mm isn’t that difficult to manipulate in to position.

yeah that looks a good method, but the swa will be on an outgoing circuit, and going into a breaker, not the incomer , sorry. large cable due to lengthy run

 

[vde-electrician]

Why was the 70mm opted for out of interest ? How long is the run ?

off the top of my head its something like 150m

 

[Leesparkykent]

yeah that looks a good method, but the swa will be on an outgoing circuit, and going into a breaker, not the incomer , sorry. large cable due to lengthy run

In that case it sounds like a horrendous design when taking installation and selectivity into account. I wouldn’t be feeding a distribution circuit that’s over 150 meters away using a mcb as it’s OCPD. I would be looking at either a fused switch, a switch fuse or an MCCB with selectivity being a major factor/consideration in the design.

 

[Leesparkykent]

Eaton Glasgow 63A 415v TPN Fused Switch, 63GNC - https://www.electricals247.co.uk/eaton-glasgow-63a-415v-tpn-fused-switch-63gnc.html?utm_source=&utm_medium=&utm_campaign=&utm_term=&utm_content=&gclid=Cj0KCQiA7briBRD7ARIsABhX8aCePus-9D541Pf4CPzo2xZLWJoDayOfdLkQcy5Nr8cPwNuC_-DaUh8aArx3EALw_wcB

Eaton MEM CSB/CSBA Spreader Boxes - Edwardes - https://www.edwardes.co.uk/en/categories/spreader-boxes


Schneider Electric MGTB1001 Terminal Block 100A - https://www.tradesparky.com/circuit-protection/distribution-equipment/mcb-distribution-board-components/schneider-mgtb1001-terminal-block-100a

Maybe something along the lines of this.

 

[Andy78]

off the top of my head its something like 150m

Got to be something wrong there then. I reckon 35mm would cut the mustard off the top of my head.

 

[vde-electrician]

Why was the 70mm opted for out of interest ? How long is the run ?

off the top of my head its something like 150m