[Amps] what is a 4 wire 240VAC service

[Paul Decker]

That's exactly how we use it! 




----- Original Message ----- 
From: TexasRF at aol.com 
To: kg7hf at comcast.net, amps at contesting.com 
Sent: Monday, April 4, 2011 9:29:46 AM 
Subject: Re: [Amps] what is a 4 wire 240VAC service 


Perhaps the switch location has a dual role: up/on = occupied, down/off = unoccupied? 

73, 
Gerald K5GW 




In a message dated 4/4/2011 8:24:42 A.M. Central Daylight Time, kg7hf at comcast.net writes: 







That must explain the bathroom light switches in my house here in New Hampshire, they all are on the outside wall instead of the inside.  Maybe we had a UK trained electrician! 



Paul (kg7hf) 







Date: Sun, 3 Apr 2011 22:51:41 -0400 
From: "Mark Robinson" <markrob at mindspring.com> 
Subject: Re: [Amps] what is a 4 wire 240VAC service? 
To: <ve3zi at rac.ca>,        "Amps" <amps at contesting.com> 
Message-ID: <946E756EE81E42B585E803DCF61F0371 at hplaptop> 
Content-Type: text/plain; format=flowed; charset="iso-8859-1"; 
        reply-type=original 

It is a lot safer. They use isolation transformers and 115V on building 
sites in the UK. 

UK code will not allow light switches in a bathroom. It either has to be a 
string pull switch in the bathroom or a wall switch on the wall outside the 
bathroom. There are no 240V power sockets allowed in the bathroom apart from 
transformer isolated razor outlets. 

Lots of people in the UK die using 240V electric mowers and cutters outside. 
It isn't 120 0 120 like here. It is 240Vrms relative to the Neutral/Ground 
potential. That is 660V pk to pk relative to ground. You take a shock and it 
really hurts if it doesn't kill you. 


Mark N1UK G3ZZM 


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