John,
On Mon, 31 Dec 2018 17:42:39 +0000,
John Woodgate <j...@woodjohn.uk> 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 <vef00...@nifty.com>
URL: http://t-sato.in.coocan.jp
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