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I am in Scotland, and I will be getting a device soon that requires 32A single phase, but I do not have a 32A outlet in my house. I was wondering if I could reverse engineer something like this to supply 32A from 3 * 13A outlets.
Registered Member #1403
Joined: Tue Mar 18 2008, 06:05PM
Location: Denmark, Odense C
Posts: 1968
3x 13A outlets are likely to be on different phases.
and even if they are not, your main fuse to the cable for your house may not be larger than 25A which is standard for households in Denmark.
You only hope is that your device runs off DC internally and you could properly match that with a 3 phased rectifier but your voltage would be higher and you would need some voltage control to lower it, seems like an awful lot of work for .... what is this device?
The Device is a medical argon laser that outputs around 2W , and uses 32A AC 230V. There is a 50A cable running through the attic which is for the shower and goes to a 50A breaker, could I take a lead off of that in parallel and put it into a 32A outlet? it wouldn't be on at the same time as the shower anyway, as I need water from the bathroom for cooling.
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
Hi Adam,
Wiring it into the shower circuit seems like a good plan.
My old OLTC2 Tesla coil would draw over 30A at full blast, and I used to run it from 13A sockets by just replacing the fuse in the plug with a link. Use a double socket, in a house wired according to modern regulations these should be on 32A ring mains, so it won't overheat any wiring. However, it should be limited to short runs in case the plug pins overheat and melt the socket.
For the benefit of people elsewhere in Europe, we don't have 3 phase in our houses, just a single phase of 240V. It's usually fused for 60, 80 or 100A depending on the size of your house.
Wiring it into the shower circuit seems like a good plan.
My old OLTC2 Tesla coil would draw over 30A at full blast, and I used to run it from 13A sockets by just replacing the fuse in the plug with a link. Use a double socket, in a house wired according to modern regulations these should be on 32A ring mains, so it won't overheat any wiring. However, it should be limited to short runs in case the plug pins overheat and melt the socket.
For the benefit of people elsewhere in Europe, we don't have 3 phase in our houses, just a single phase of 240V. It's usually fused for 60, 80 or 100A depending on the size of your house.
I was thinking about just taking out the fuse also, but I would be worried about over heating wires and pins, and it would be a pain to check what gauge the wires in the house all were. So it looks like the shower idea is best. I also can't give it short runs as these lasers are designed for long runs and sustain some damage from frequent start up.
I'm going to stick around here, as I want to get into HV later anyway when I have some spare cash.
Registered Member #311
Joined: Sun Mar 12 2006, 08:28PM
Location:
Posts: 253
Of course if you wanted to do it properly, and there is space in the consumer unit, add a new 32A breaker and wire a 32A ceeform /BS4343 socket to it. with 4mm^2 cable.
Registered Member #193
Joined: Fri Feb 17 2006, 07:04AM
Location: sheffield
Posts: 1022
A long time ago when I was a student I was involved in amateur dramatics and such as a tech guy (I can't act). We had a problem in one venue- we wanted to plug a 5KW stage lamp in to the 240V mains but there was no high current power supply. So we wired two 13 amp plugs to a single 32 amp socket. Then we realised that none of the sockets about the place were double sockets so we would have to plug the so called "psycho wired" plug into two different rooms. This place had a 3 phase supply. Well, we did check that the two rooms were on the same phas of the mains but I must admit I was a bit nervous when I threw the switch that was going to connect two wiree that were either; on the same phase and therefore at essentially the same potential or on two different phases and therefore 415 volts apart and connected to a high current supply.
It turned out that we had the same phase so I was OK. In your house there will only be one phase so, if you are concerned about overheating a plug you can do the same trick- use two plugs feeding a 32 amp socket (but for God's sake never let a real electrician see it).
Registered Member #103
Joined: Thu Feb 09 2006, 08:16PM
Location: Derby, UK
Posts: 845
haha, just watch out for the 'plug of death' that will have live pins when you unplug it, because it's still plugged in
Another option would be to wire it where the electric cooker would normally go, if that's an option. It's quite common around here to find a big phat high current output above the gas cooker, waiting for something to be hooked up to it.
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Reverse engineering a 32A 1ph to 13A 1ph distrobution board ?
