Re: [PSES] Japanese manis leads

2018-12-31 Thread John Woodgate 

Thank you very much.

Best wishes
John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk
Rayleigh, Essex UK

On 2019-01-01 02:17, T.Sato wrote:

John,

On Mon, 31 Dec 2018 17:42:39 +,
   John Woodgate  wrote:


Hello, Sato-san.  Since mains outlets rarely have PE terminals, is the
built-in wiring in homes also just 2-core (no PEC) for 100 V and
3-core (no PEC) for 200 V?

These days,

   o 200 V outlets (typically used for high-power equipment such as
 air conditioners, cloth dryers and IH cookers) and those cables
 usually have PE conductors
 
   o some 100 V appliances such as air conditioners, cloth washers,

 refrigerator, shower toilets also require PE, and outlets for
 those places typically have PE terminals (2-core outlets with
 a separate earth terminal, or 3-core outlets) and wired with
 3-core cables

   o other most outlets usually have no PE, and those cables may
 or may not have PE conditioners

Regards,
Tom



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Re: [PSES] Japanese manis leads

2018-12-31 Thread T.Sato 
John,

On Mon, 31 Dec 2018 17:42:39 +,
  John Woodgate  wrote:

> Hello, Sato-san.  Since mains outlets rarely have PE terminals, is the
> built-in wiring in homes also just 2-core (no PEC) for 100 V and
> 3-core (no PEC) for 200 V?

These days,

  o 200 V outlets (typically used for high-power equipment such as
air conditioners, cloth dryers and IH cookers) and those cables
usually have PE conductors

  o some 100 V appliances such as air conditioners, cloth washers,
refrigerator, shower toilets also require PE, and outlets for
those places typically have PE terminals (2-core outlets with
a separate earth terminal, or 3-core outlets) and wired with
3-core cables

  o other most outlets usually have no PE, and those cables may
or may not have PE conditioners

Regards,
Tom

-- 
Tomonori Sato  
URL: http://t-sato.in.coocan.jp

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Re: [PSES] Japanese manis leads

2018-12-31 Thread John Woodgate 
Hello, Sato-san.  Since mains outlets rarely have PE terminals, is the 
built-in wiring in homes also just 2-core (no PEC) for 100 V and 3-core 
(no PEC) for 200 V?


Best wishes for a happy and prosperous New Year.
John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk
Rayleigh, Essex UK

On 2018-12-07 14:04, T.Sato wrote:

John,

On Fri, 7 Dec 2018 10:54:18 +,
   John Woodgate  wrote:


In Japan, are 3-core (L, N, PE) mains leads widely used for
single-phase products or are the majority of products safety Class II,
with just L and N?

At least for household products, majority of products are Class 0
and some specific products such as cloth washers are Class 0I.

Here in Japan, mains outlets in homes rarely have PE terminals.

Some products such as air conditioners sometimes rated for 200 V,
in that case they often have 3-core mains cords.

Regards,
Tom



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Re: [PSES] Japanese manis leads

2018-12-07 Thread John Woodgate 

Yes, it helps. Arigato.

Best wishes
John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk
Rayleigh, Essex UK

On 2018-12-07 22:50, John Allen wrote:

Tom

Thanks,  and so not what I had thought - however, that does clarify the
situation and hopefully has answered John W's question.

John E Allen
West London, UK

-Original Message-
From: T.Sato [mailto:vef00...@nifty.com]
Sent: 07 December 2018 22:35
To: john_e_al...@blueyonder.co.uk
Cc: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Japanese manis leads

John,

On Fri, 7 Dec 2018 14:40:26 -,
   "John Allen"  wrote:


Ref those 200V products: are they single phase 2-wire (Neutral + Live) +
Ground, OR split-phase (100V on each of 2 Live legs) + Neutral return?
(IIRC, it is the latter - probably introduced as a result of North

American

influence where that configuration is common for high consumption
appliances).

200 V rated products and 200 V outlets usually use 2-wires (L + L) + PE,
although 200 V distributions have 3-wires (L + N + L) + PE so that both
200 V and 100 V equipment can be powered.

Regards,
Tom



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Re: [PSES] Japanese manis leads

2018-12-07 Thread John Allen 
Tom

Thanks,  and so not what I had thought - however, that does clarify the
situation and hopefully has answered John W's question.

John E Allen
West London, UK

-Original Message-
From: T.Sato [mailto:vef00...@nifty.com] 
Sent: 07 December 2018 22:35
To: john_e_al...@blueyonder.co.uk
Cc: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Japanese manis leads

John,

On Fri, 7 Dec 2018 14:40:26 -,
  "John Allen"  wrote:

> Ref those 200V products: are they single phase 2-wire (Neutral + Live) +
> Ground, OR split-phase (100V on each of 2 Live legs) + Neutral return?
> (IIRC, it is the latter - probably introduced as a result of North
American
> influence where that configuration is common for high consumption
> appliances).

200 V rated products and 200 V outlets usually use 2-wires (L + L) + PE,
although 200 V distributions have 3-wires (L + N + L) + PE so that both
200 V and 100 V equipment can be powered.

Regards,
Tom

-- 
Tomonori Sato  
URL: http://t-sato.in.coocan.jp


> -Original Message-
> From: T.Sato [mailto:vef00...@nifty.com] 
> Sent: 07 December 2018 14:04
> To: EMC-PSTC@LISTSERV.IEEE.ORG
> Subject: Re: [PSES] Japanese manis leads
> 
> John,
> 
> On Fri, 7 Dec 2018 10:54:18 +,
>   John Woodgate  wrote:
> 
>> In Japan, are 3-core (L, N, PE) mains leads widely used for
>> single-phase products or are the majority of products safety Class II,
>> with just L and N?
> 
> At least for household products, majority of products are Class 0
> and some specific products such as cloth washers are Class 0I.
> 
> Here in Japan, mains outlets in homes rarely have PE terminals.
> 
> Some products such as air conditioners sometimes rated for 200 V,
> in that case they often have 3-core mains cords.
> 
> Regards,
> Tom
> 
> -- 
> Tomonori Sato  
> URL: http://t-sato.in.coocan.jp
> 
> -
> 
> This message is from the IEEE Product Safety Engineering Society emc-pstc
> discussion list. To post a message to the list, send your e-mail to
> 
> 
> All emc-pstc postings are archived and searchable on the web at:
> http://www.ieee-pses.org/emc-pstc.html
> 
> Attachments are not permitted but the IEEE PSES Online Communities site at
> http://product-compliance.oc.ieee.org/ can be used for graphics (in
> well-used formats), large files, etc.
> 
> Website:  http://www.ieee-pses.org/
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> Mike Cantwell 
> 
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Re: [PSES] Japanese manis leads

2018-12-07 Thread T.Sato 
John,

On Fri, 7 Dec 2018 14:40:26 -,
  "John Allen"  wrote:

> Ref those 200V products: are they single phase 2-wire (Neutral + Live) +
> Ground, OR split-phase (100V on each of 2 Live legs) + Neutral return?
> (IIRC, it is the latter - probably introduced as a result of North American
> influence where that configuration is common for high consumption
> appliances).

200 V rated products and 200 V outlets usually use 2-wires (L + L) + PE,
although 200 V distributions have 3-wires (L + N + L) + PE so that both
200 V and 100 V equipment can be powered.

Regards,
Tom

-- 
Tomonori Sato  
URL: http://t-sato.in.coocan.jp


> -Original Message-
> From: T.Sato [mailto:vef00...@nifty.com] 
> Sent: 07 December 2018 14:04
> To: EMC-PSTC@LISTSERV.IEEE.ORG
> Subject: Re: [PSES] Japanese manis leads
> 
> John,
> 
> On Fri, 7 Dec 2018 10:54:18 +,
>   John Woodgate  wrote:
> 
>> In Japan, are 3-core (L, N, PE) mains leads widely used for
>> single-phase products or are the majority of products safety Class II,
>> with just L and N?
> 
> At least for household products, majority of products are Class 0
> and some specific products such as cloth washers are Class 0I.
> 
> Here in Japan, mains outlets in homes rarely have PE terminals.
> 
> Some products such as air conditioners sometimes rated for 200 V,
> in that case they often have 3-core mains cords.
> 
> Regards,
> Tom
> 
> -- 
> Tomonori Sato  
> URL: http://t-sato.in.coocan.jp
> 
> -
> 
> This message is from the IEEE Product Safety Engineering Society emc-pstc
> discussion list. To post a message to the list, send your e-mail to
> 
> 
> All emc-pstc postings are archived and searchable on the web at:
> http://www.ieee-pses.org/emc-pstc.html
> 
> Attachments are not permitted but the IEEE PSES Online Communities site at
> http://product-compliance.oc.ieee.org/ can be used for graphics (in
> well-used formats), large files, etc.
> 
> Website:  http://www.ieee-pses.org/
> Instructions:  http://www.ieee-pses.org/list.html (including how to
> unsubscribe)
> List rules: http://www.ieee-pses.org/listrules.html
> 
> For help, send mail to the list administrators:
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> Mike Cantwell 
> 
> For policy questions, send mail to:
> Jim Bacher:  
> David Heald: 
> 

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Re: [PSES] Japanese manis leads

2018-12-07 Thread Ted Eckert 
Hello John,

The vast majority of single-phase electrical outlets in Japanese residential 
and commercial installations have no protective earth. Most products sold in 
Japan are Class II. Outlets with protective earth are typically only found in 
industrial applications in Japan.

Best regards,
Ted Eckert

The opinions expressed are my own and do not necessarily reflect those of my 
employer.

From: John Woodgate 
Sent: Friday, December 7, 2018 2:54 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Japanese manis leads


In Japan, are 3-core (L, N, PE) mains leads widely used for single-phase 
products or are the majority of products safety Class II, with just L and N?

--

Best wishes

John Woodgate OOO-Own Opinions Only

J M Woodgate and Associates 
www.woodjohn.uk

Rayleigh, Essex UK
-


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Re: [PSES] Japanese manis leads

2018-12-07 Thread John Allen 
Tom

Ref those 200V products: are they single phase 2-wire (Neutral + Live) +
Ground, OR split-phase (100V on each of 2 Live legs) + Neutral return?
(IIRC, it is the latter - probably introduced as a result of North American
influence where that configuration is common for high consumption
appliances).

John E Allen
W. London, UK

-Original Message-
From: T.Sato [mailto:vef00...@nifty.com] 
Sent: 07 December 2018 14:04
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Japanese manis leads

John,

On Fri, 7 Dec 2018 10:54:18 +,
  John Woodgate  wrote:

> In Japan, are 3-core (L, N, PE) mains leads widely used for
> single-phase products or are the majority of products safety Class II,
> with just L and N?

At least for household products, majority of products are Class 0
and some specific products such as cloth washers are Class 0I.

Here in Japan, mains outlets in homes rarely have PE terminals.

Some products such as air conditioners sometimes rated for 200 V,
in that case they often have 3-core mains cords.

Regards,
Tom

-- 
Tomonori Sato  
URL: http://t-sato.in.coocan.jp

-

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Re: [PSES] Japanese manis leads

2018-12-07 Thread John Woodgate 

Thank you.

Best wishes
John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk
Rayleigh, Essex UK

On 2018-12-07 14:04, T.Sato wrote:

John,

On Fri, 7 Dec 2018 10:54:18 +,
   John Woodgate  wrote:


In Japan, are 3-core (L, N, PE) mains leads widely used for
single-phase products or are the majority of products safety Class II,
with just L and N?

At least for household products, majority of products are Class 0
and some specific products such as cloth washers are Class 0I.

Here in Japan, mains outlets in homes rarely have PE terminals.

Some products such as air conditioners sometimes rated for 200 V,
in that case they often have 3-core mains cords.

Regards,
Tom



-

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Re: [PSES] Japanese manis leads

2018-12-07 Thread John Woodgate 

Thank you.

Best wishes
John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk
Rayleigh, Essex UK

On 2018-12-07 14:04, T.Sato wrote:

John,

On Fri, 7 Dec 2018 10:54:18 +,
   John Woodgate  wrote:


In Japan, are 3-core (L, N, PE) mains leads widely used for
single-phase products or are the majority of products safety Class II,
with just L and N?

At least for household products, majority of products are Class 0
and some specific products such as cloth washers are Class 0I.

Here in Japan, mains outlets in homes rarely have PE terminals.

Some products such as air conditioners sometimes rated for 200 V,
in that case they often have 3-core mains cords.

Regards,
Tom



-

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list. To post a message to the list, send your e-mail to 

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Re: [PSES] Japanese manis leads

2018-12-07 Thread T.Sato 
John,

On Fri, 7 Dec 2018 10:54:18 +,
  John Woodgate  wrote:

> In Japan, are 3-core (L, N, PE) mains leads widely used for
> single-phase products or are the majority of products safety Class II,
> with just L and N?

At least for household products, majority of products are Class 0
and some specific products such as cloth washers are Class 0I.

Here in Japan, mains outlets in homes rarely have PE terminals.

Some products such as air conditioners sometimes rated for 200 V,
in that case they often have 3-core mains cords.

Regards,
Tom

-- 
Tomonori Sato  
URL: http://t-sato.in.coocan.jp

-

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