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Switzerland has 4 official languages, and yes it makes sence to have signs in several languages as place names differ significantly in the different languages, some you can guess, others not. I live near Solothurn/ Soleur, Biel/ Bienne, Neuenburg/Neuchâtel and Münster/ Moutier. Genf/ Génève/...

Yes, right, but they happen to live roughly in the same area of France. What I wanted to say, even if France is strictly centralistic, they acknowlege at least 3 languages besides French (Bréton, Provençale and Basque, any more?), so they are by far not as uniform as some migth wish they were...

Not sure if everyone became French. These tall blonde guys wearing kilts and speaking an odd old fashioned language and pressed through to have bilingual road signs at the central government in Paris (and they are really stubborn).

If you go back in history far enough you might find out that we are all immigrants.

Well I face an obstacle and used the forums knowledge to try out alternatives. It drifted away to the question if there is only one way to Rome or several, still interesting.

Well you quotet only half the sentence. But yes, in the office building I'm sitting now, there are rechargeable battery operated emergncy lights. There are portable handlamps hanging in the staircase. The front door is an automatic sliding door that won't work without power unless you know how...

Yes I heard about these UK regulations not to switch off everything but only parts. Appart from hospitals, space shuttles and air crafts I got difficulties to find reasons why a cut of energy would not lead to a safe state. Uncomfortable, but safe. Public buildings are equipped with battery...

Now I start to understand why everybody here thinks 230V is something considerably dangerous. London City Airport 2013: Somebody found it necessary to put an RCD in the sockets where dumb tourists frequently do the ball pen trick to get their laptops plugged in. And all the other...

I'm happy about the explanations about the 2 phase 110V system. Thanks for that. My world turned around a 3P+N system. Now I understand the sense in doing 110V as a means of safety and don't just regard it as another useless obstacle imposed by brain free HSE guys. Well it remains an obstacle...

In said case our day rate was the smaller problem, the completion date of the national stadium bigger one. Who is free of errors may throw the first stone, or similar. As a small subcontractor you always get your share of the losses the big main contractor causes by his mismanagement, finally...

They had a tiny little tanker truck coming once ervery day to refuel the cranes. But there was no operator with generators who would order them to come. So the electricians carried jerry cans after the tanker was gone.

The site electricians, of course, a generator is something electrical, so it fell in their competence to refuel them.

@ericmark Well. I supplied information abuot 2 months ago. The points (about 10) where we need power with plan view of the site, 400V, how many kVAs, how many 230VAC 16A supplies, what kind of socket, how many pins (5) as there are red 4-pin CEE sockets too, when we need it and for what...

12.5 kV or 12.5 kVA? Well the 6 bread and butter HPU we intent to use here require 400V and 30kVA each. The ones where the 125A CEE plug imposes the limit we leave for the offshore jobs. Offshore is where you need to tripple the personnel because HSE requirements reduce productivity to less...

Well it takes 50mA or more through the heart reagion (one conductor each arm) for an otherwise healthy person. I'd say it improves your chances significantly.

Sorry I've really been making up numbers. It is the square root of 2. It really doesn't matter. 55VAC are not regarded as safe, just almost.

You WILL feel it, but it won't kill you.

Well I'm not an electrician isn't it the factor sqare route of 3?

The 50VAC maximum has to be insulated. Safe to touch is 25VAC. Nice to hear that it is ok to push the limits (break the rules) if it is only by a bit. So there is no consistancy. So I got a point to refuse the 110V annoyance and ask for a safe 230V supply which is fused at 16A and RCDed at...

Yes it matters. Actually it is the only value that matters regarding your heart. We stopped using 48VAC as controls current some 30 years ago, because it became illegal. Nowadays it is 24VDC Europe or 12VDC US. So I'd recommend a state of the art power supply at 230V single phase or 400V...