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FFPA distro update

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rosssss224 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote rosssss224 Quote  Post ReplyReply Direct Link To This Post Posted: 28 January 2019 at 4:20pm
Cant deny the good work but agree on RCD's and nuisance tripping. Anything more than 3 laptops will be getting close to 30mA. Recently done some design on an office electrical system and put in RCD protected sockets at every desk. This is widely accepted as what to do going forward rather than running multiple circuits. 
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nuclearbass View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote nuclearbass Quote  Post ReplyReply Direct Link To This Post Posted: 28 January 2019 at 6:12pm


Originally posted by MattStolton MattStolton wrote:

Nothing personal, as mentioned you were brave enough to stick head over parapet.

Just passing some of the love on, that Kyle showed to me, with my RCF purchase!

In reality, if it is legal to use a bit of 0.75^2 3 core H05 off a 13A plug top fuse for less than 2m to power your bedside light, you'll be fine, just on my high horse for no good reason.

It could be your singles are actually rated at much higher temperatures/current capabilities than my guess/assumptions, just saying that grouping/bundling of cores has a massive effect on current capability.

By being tidy, you have run into the grouping trap.

If you had done it all heath robinson, no bundling, no problem!

As I say I’m not the electric guy, but one thing that does ping up, majority of lighting socapex I’ve come across is 1.5mm on 50meter runs, usually getting fed from a 16a socket.

That seems widely accepted 
one life - have fun!
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Shelfstacker View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shelfstacker Quote  Post ReplyReply Direct Link To This Post Posted: 28 January 2019 at 9:13pm
Still a fine looking piece of distro
If you are at the circus and being attacked by clowns - go for the juggler
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JonB67 Quote  Post ReplyReply Direct Link To This Post Posted: 28 January 2019 at 9:32pm
Guess it doesn't hurt to hear the gold standard solution. After that if one chooses to make a compromise its done with open eyes and awareness.  

I didn't realise bundling caused such a huge derating. 
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nuclearbass View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote nuclearbass Quote  Post ReplyReply Direct Link To This Post Posted: 29 January 2019 at 9:35am
We will see how it goes, it far surpasses what we have been using.

I darent post that up for the chopping block 😂
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MattStolton View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MattStolton Quote  Post ReplyReply Direct Link To This Post Posted: 29 January 2019 at 10:23am
Just to fook you off some more, 16A RCBO (10Ka Contactum so pretty good) for only £12.85+ tax in 3+ price break


https://www.tlc-direct.co.uk/Products/CPBR1016B.html
Matt Stolton - Technical Director (!!!) - Wilding Sound Ltd
"Sparkius metiretur vestra" - "Meter Your Mains"
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Muckerbarnes1 Quote  Post ReplyReply Direct Link To This Post Posted: 29 January 2019 at 10:43am
RCBO all the way. Cheap as chips. Change cable bundles. Easy. Sorted. 
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confused.com View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote confused.com Quote  Post ReplyReply Direct Link To This Post Posted: 29 January 2019 at 10:50am
Oh hell yeah, haven't used anything else but RCBOs in place of MCBs for for ten years now, absolutely no point in exposing the gig to spurious tripping thanks to all the nasty leakage from the plethora of switch mode junk that seems to power everything these days. Ensure that you have derated the cables for grouping (or pay somebody to do it for you) as has already been mentioned and you are home and dry. That is important as if you ever end up before the HSE or the judge and they want to know how you tried to prevent fire/death/injury by using a safe box of tricks you will be able to defend yourself and walk away free to gig again.      

Edited by confused.com - 29 January 2019 at 10:55am
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MattStolton View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MattStolton Quote  Post ReplyReply Direct Link To This Post Posted: 29 January 2019 at 11:19am
Originally posted by nuclearbass nuclearbass wrote:

...lighting socapex I’ve come across is 1.5mm on 50meter runs, usually getting fed from a 16a socket....


The switch pack or dimmer pack may well be fused at 10A, or smaller, per live conductor. 16A cee is the most that connector will carry, could be upstream fused with a T500mA!

As ever, plan, measure, measure some more. If your voltage drop, PFC, et al are within reg's limits, crack on. If not, your planning was crap.
Matt Stolton - Technical Director (!!!) - Wilding Sound Ltd
"Sparkius metiretur vestra" - "Meter Your Mains"
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