Spain - 3 phase mains help
Posted by: DJ on 03 June 2007
I have a new house with 3 phase supply. I have organised a new 6sqmm spur from the meter tails. Does it matter which phase they connect to? Does it matter which way round the live & neutral are *in Spain you can turn the plug 180 degreees in the socket* to my Power eigel(hedgehog) supply to my CDS3, LP12, 52, 135, SBL system. David__
Posted on: 03 June 2007 by Phil Cork
quote:Originally posted by DJ:
I have a new house with 3 phase supply. I have organised a new 6sqmm spur from the meter tails. Does it matter which phase they connect to? Does it matter which way round the live & neutral are *in Spain you can turn the plug 180 degreees in the socket* to my Power eigel(hedgehog) supply to my CDS3, LP12, 52, 135, SBL system. David__
I don't know how pedantic this is, and have not developed my hi-fi art to the point of playing around with my mains, however from a purely engineering aspect, i'd suggest connecting it to the phase with the least other equipment connected to it?
Any of the phases to ground is the standard supply voltage. Across phases is, as Frank says, a higher voltage (415 in the UK), so make sure you get it right!
Phil
Posted on: 03 June 2007 by u5227470736789439
Across two phases is 415 volts, and to the neutral is 230 volts in UK at least.
Mnay years ago we had two inputs to the house on different phases from a wopping 25 horsepower transformer! The noise it would make certainly put any Naim PS into the virtually silent category!!
The funny story about that was that in 1967 we had a new 25 horsepower electric corn drying fan installed, but what was ordered was a 15 horsepower model, which was still large by the standards of the time. Alvan Blanch in Wiltshire despatched the wrong fan, and no one looked at the plate on the motor, which was duly connected and kept blowing the main Phase fuses on the post by the transformer!
The MEB were sent for, and in those days a new transformer would take anything from 18 months to two years from being requested. The MEB man had a brain wave. Clearly there was no way the big motor was going to be started off too small a transformer, but also there was no way we would get another transformer fitted in time for the harvest, BUT...
It just happed to catch fire from overheating because...
48 hours later the new 25 hp unit was connected up!
The big fan actually troubled the new transformer as well, in that the starter box required considerable skill to opperate. Firstly you pushed the lever down through 90 degrees and held it for thirty seconds [not less!], and when enough speed was in the fan, you rapidly turned the lever through 180 degrees to bolt upright, and hopefully did not blow out the starter box fuses or the circuit breaker trip! All the lights dimed right down for several seconds as the fan made the rest of the gain to full speed! I imagine that it would have upset an computer, and probably anything with modern electronics in.
Happy days! Fredrik
Mnay years ago we had two inputs to the house on different phases from a wopping 25 horsepower transformer! The noise it would make certainly put any Naim PS into the virtually silent category!!
The funny story about that was that in 1967 we had a new 25 horsepower electric corn drying fan installed, but what was ordered was a 15 horsepower model, which was still large by the standards of the time. Alvan Blanch in Wiltshire despatched the wrong fan, and no one looked at the plate on the motor, which was duly connected and kept blowing the main Phase fuses on the post by the transformer!
The MEB were sent for, and in those days a new transformer would take anything from 18 months to two years from being requested. The MEB man had a brain wave. Clearly there was no way the big motor was going to be started off too small a transformer, but also there was no way we would get another transformer fitted in time for the harvest, BUT...
It just happed to catch fire from overheating because...
48 hours later the new 25 hp unit was connected up!
The big fan actually troubled the new transformer as well, in that the starter box required considerable skill to opperate. Firstly you pushed the lever down through 90 degrees and held it for thirty seconds [not less!], and when enough speed was in the fan, you rapidly turned the lever through 180 degrees to bolt upright, and hopefully did not blow out the starter box fuses or the circuit breaker trip! All the lights dimed right down for several seconds as the fan made the rest of the gain to full speed! I imagine that it would have upset an computer, and probably anything with modern electronics in.
Happy days! Fredrik
Posted on: 04 June 2007 by prc
As Frank mentions Live should be brown, Neutral is usually blue and earth is (yellow/green).
Paulo
Paulo
Posted on: 04 June 2007 by Adam Meredith
Good to see so many qualified Spanish electricians in our "demographic".
Posted on: 05 June 2007 by u5227470736789439
Good as "Manuel - I know nothing - from Barthelona" might have done it then! Fredrik