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Power Distro / Power consumption

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DubKoala View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DubKoala Quote  Post ReplyReply Direct Link To This Post Topic: Power Distro / Power consumption
    Posted: 16 February 2023 at 3:22am
Hi all,

I'm needing to get a distro for my soundsystem and was hoping for some guidance.

In my rack I have an Admark K35 for my subs, and Admark K420 for kicks and mids and an Ashly KLR 3200 for my tops. I also have a DSP too.

I will also have a reggae preamp, delay, siren, Denon Prime 4 and two Technics 1200's running along with a lamp and a couple of other low draw devices too.

What kind of power distro would be best suited for this please?

Should I try run the amps etc off a different circuit than the music players etc?

And how to I calculate my power needs/consumption?

This side of things is a challenge for me to get my head around so any advice would me much appreciated.

Many thanks!
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fat_brstd View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote fat_brstd Quote  Post ReplyReply Direct Link To This Post Posted: 16 February 2023 at 3:45am
Hey bro, you want a 3 phase distro really for that stuff. The most common over our end of the world as the rack mount ones with a big orange Wilco 32A/3 input and then 12 x 10A outlets. The one you want is the one with a pair of 10A outlets per 20A breaker so you get 6 breakers.

Something like the PD620 from Powerwise would do the job - https://www.jdsound.com.au/powerwise-pd620-powerwise-3-phase-6-x-20a-circuit-3ru.html

You want to split the amps over the different phases and keep the circuit for the bass amp clear of anything else to make sure it can draw maximum current.

If a venue doesn't have 3 phase power then its a case of getting as many different regular outlets as possible. You will often find 15A or 20A outlets hidden around venues that don't have 3 phase so it is worth getting the relevant extension leads for sockets like that and putting the sub amp on the biggest socket you can find.
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levyte357- View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357- Quote  Post ReplyReply Direct Link To This Post Posted: 16 February 2023 at 9:23am
Would suggest for what he has there, Kelsey PD7/32 will do just fine.

With only 1x sub amp, no lighting gear, no need to over complicate, with amps on different phases.


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csg View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote csg Quote  Post ReplyReply Direct Link To This Post Posted: 16 February 2023 at 11:23am
I suspect DubKoala may be from “down under”, where small 3 phase supplies are much more common than they are in the UK. We have long been “frightened “ of 3 phase in the UK, i can even remember theatres where 3 phase had to be physically separated by over 2 metres to avoid phase-phase shocks.

Friends of mine in Sweden have 3 phase sockets in their garage, this is very common. Comes in very useful for that 3 phase lathe..
“The fact is this is about identifying what we do best and finding more ways of doing less of it better”
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Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357- Quote  Post ReplyReply Direct Link To This Post Posted: 16 February 2023 at 1:19pm
Originally posted by csg csg wrote:

I suspect DubKoala may be from “down under”, where small 3 phase supplies are much more common than they are in the UK. We have long been “frightened “ of 3 phase in the UK, i can even remember theatres where 3 phase had to be physically separated by over 2 metres to avoid phase-phase shocks.

Friends of mine in Sweden have 3 phase sockets in their garage, this is very common. Comes in very useful for that 3 phase lathe..


I personally have the "Thomann Botex" PSA 321.



Got this few years after having Kelsey PD7/32, and realising the benefit of metering mains, and also seeing current draw of hefty bass amps.

But I guess, if rig owner regularly is on 3PH power, makes sense to have 3PH distro, as long as rig owner learns how to wire distro cables, properly and safely.



Edited by levyte357- - 16 February 2023 at 1:29pm
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csg View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote csg Quote  Post ReplyReply Direct Link To This Post Posted: 16 February 2023 at 2:25pm
Yes those distros are OK, other than the global RCD which is always a bad idea on a production distro. Cumulative leakage can be a real issue where multiple appliances often with switch mode PSU’s each leak a milliamp or so, and all of a sudden the whole lot trips. Individual final circuits of 16/32A etc should have a 30mA RCD protecting them, hence the overall RCD in this case would have to be no greater than 30mA.

A far better solution is to have individual RCBO 2 pole protection on each outlet, so if you do have leakage or indeed a fault then you loose that circuit only which impacts the production less and makes fault finding much much easier!
“The fact is this is about identifying what we do best and finding more ways of doing less of it better”
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levyte357- View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357- Quote  Post ReplyReply Direct Link To This Post Posted: 16 February 2023 at 3:39pm
Originally posted by csg csg wrote:

Yes those distros are OK, other than the global RCD which is always a bad idea on a production distro. Cumulative leakage can be a real issue where multiple appliances often with switch mode PSU’s each leak a milliamp or so, and all of a sudden the whole lot trips. Individual final circuits of 16/32A etc should have a 30mA RCD protecting them, hence the overall RCD in this case would have to be no greater than 30mA.

A far better solution is to have individual RCBO 2 pole protection on each outlet, so if you do have leakage or indeed a fault then you loose that circuit only which impacts the production less and makes fault finding much much easier!


Not long after I got my unit, I was personally schooled by few sparkies off this forum, so personally replaced all breakers with authentic Schmidtt.

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RWD View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RWD Quote  Post ReplyReply Direct Link To This Post Posted: 19 November 2023 at 9:48am
Hiya lads. I were given a Botex PSA 322-6 DL. Does this thing work in the UK. would it need adaptors or anything else to make it work on the usual 4 sub/kicks sound system over here?

Any replies would be well appreciated.


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James Tengo View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote James Tengo Quote  Post ReplyReply Direct Link To This Post Posted: 19 November 2023 at 8:10pm
If the venues you play in have 32a 3 phase supplies then yes, it's a great little distro that can easily be used to power your equipment. It has 30ma RCBO's per outlet so is bang up to code, and if you use the powercon outlets it meets uk spec. Just ignore the shuko outlets... The only adapter you might want is a 32a single phase to 32a 3 phase with the live jumped to all 3 phases in order to run it off a 32a single phase supply. As ever the question is what power supplies are available in the venues you play in? That will determine if it's useful to you

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