Event Power Box


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Old 11-18-13, 12:27 AM
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Question Event Power Box

I need some help understanding how to design a three-phase power box.

The end result is 12 x 10A GPO's (3 quad 10A points), 4 x 15A GPO's (2 double 15A points) and a single 20A GPO. All switched.

I want the box to have a master kill switch from input that will lead into a master RCD.

Then each set of GPO's will have its own ganged breaker and then a MCB for each outlet itself, with an RCBO on the 20A because Im paranoid.

End result should look like the image provided (image is to scale).

This will be a wall board. The 20A will run a jumping castle the 10As are for miscellaneous items and the 15A will be for fridges and coffee grinder/machines.

I have a 415V 5 pin IP 67 ceeform for a power source.
 
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Old 11-18-13, 05:13 AM
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Box

Well, I hope the other guys know what all your abbreviations mean; I certainly do not.
 
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Old 11-18-13, 05:40 AM
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Welcome. This is primarily a North American forum. While electric is universal wiring methods, equipment, and terminology varies. I don't think we have any Australians on the forum so you may only get general help.
 
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Old 11-18-13, 05:49 AM
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You can't recreate the wheel. You'll need to start with a 3 phase panel that will be big enough to handle all your loads.

Is this a permanent setup or will it be traveling venue to venue ?
 
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Old 11-20-13, 02:41 AM
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Question Yep Aussie.

Yep Aussie.

This is for a not-for-profit organization and not for huge carnivals just tiny local fairs we host onsite for fundraising.

We have a contracted group of sparky's that charge for design time. That's about $45 per half hour. So if we provide them with a well worked out base idea and they OK it, we use another contracted wholesale dealer to purchase all the required components and parts needed. We cannot go outside of our contracts as there is more than one facility linked to them.

On one hand it pisses off the sparky's as it only allows them to charge labour, but on the other we save lots. For example, what was quoted as five sets of $4000-$5000 system additions or upgrades, have been reduced to $2500 each and we got a bulk discount on the labour from $98 per hour down to $77.

Every part in our facility is the same class/type, has been documented, checked and its warrantying noted in case it fails.

That being said I am/was a technical trade assistant before I took up my current post. It generally falls to me with these things as I have some idea how they work. However I have very little experience with three-phase power.
 
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Old 11-20-13, 02:44 AM
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Question Additonal.

Regarding the RCD I suppose it would be possible to switch all the MCB's (main circuit [overload] breakers) with RCBO's ([residual + overload] breakers). However how will that work with the three-phase. Will it not need to enter and disperse after exiting from the main KILL breakers? Would it not still be best to go through a modulated three-phase RCD before the RCBO's?
 
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Old 11-20-13, 05:34 PM
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I am completely lost. You're making this sound like a major engineering project.

modulated three-phase
For temporary power distribution ?
 
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Old 11-21-13, 03:37 AM
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I agree that we may not be able to help you considering the difference in terminology and regulations.

One thing I would say is that to have anything like what you are trying to assemble here you would need to have it made by a licensed electrician (sparky I guess to you ).

Here, because of the speed at which you would be sued if anything were to fail and hurt someone, it is especially important it be to codes if for a public gathering.
 
 

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