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Joined: Apr 2022
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The grounding/Neutral system will not make any problems, many European places do still use a 230V system without a Neutral. Y transformer with 230V between the legs does have approx 130V from each leg to ground. Where you are (in Norway?) do you tend to see more 400Y/230 or 230Y/132 utility distribution systems?
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Joined: Jun 2014
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Most of Norway has traditionally had a Y 230. but the center point has not been bonded to ground, so it has usually not been a neutral at all. New transformers for new buildings use the more common European system of 400/230V Y, quite similar to the US 480/277V system. It has been some regional differences, The Stavanger area used the 230/400 (Earlier 380/220) system, Arendal area used a grounded center on the 230y but no Neutral wire in the supply system.
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tortuga |
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Joined: May 2002
Posts: 383
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Interesting question DSK and it was one that first brought me to this forum when I was seconded to the USA from 240V 50Hz land. I had a fair bit of 240V workshop equipment plus that very British of requirements a 240V kettle, all 3kW of it! The question I asked at the time (in the very early noughties) was can a 240V (NEMA6-20) be installed in a US kitchen?
A great deal of debate ensued including issues around GFCI which, as has been pointed out above, can be rather expensive. The final outcome was that yes I could as it was for a dedicated piece of equipment and that the code requirements for GFCI in the kitchen only applied to 120V circuits.
A search might find the original post but it has surpassed my ability to do so.
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Joined: Jul 2004
Posts: 9,934 Likes: 34
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Interesting question DSK and it was one that first brought me to this forum when I was seconded to the USA from 240V 50Hz land. I had a fair bit of 240V workshop equipment plus that very British of requirements a 240V kettle, all 3kW of it! The question I asked at the time (in the very early noughties) was can a 240V (NEMA6-20) be installed in a US kitchen?
A great deal of debate ensued including issues around GFCI which, as has been pointed out above, can be rather expensive. The final outcome was that yes I could as it was for a dedicated piece of equipment and that the code requirements for GFCI in the kitchen only applied to 120V circuits.
A search might find the original post but it has surpassed my ability to do so. It is true that 210.8 (A) still says (A) Dwelling Units. All 125-volt, single-phase, 15- and 20-
ampere receptacles installed in the locations specified in
210.8(A)(1) through (10) shall have ground-fault circuit-
interrupter protection for personnel.
Greg Fretwell
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Joined: Jul 2004
Posts: 9,934 Likes: 34
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I other than dwelling units your 6-15 would need GFCI protection in a kitchen. (B) Other Than Dwelling Units. All single-phase receptacles
rated 150 volts to ground or less, 50 amperes or less and three-
phase receptacles rated 150 volts to ground or less,
100 amperes or less installed in the following locations shall
have ground-fault circuit-interrupter protection for personnel
Greg Fretwell
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Posts: 5,445
Joined: January 2005
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