. 50571.2-94 . 3. : TN-C, TN-S, TN-C-S, TT, IT. TN-C
TN-C (. Terre-Neutre-Combine) AEG 1913 . PE- (. Protection Earth) . . , .
TN-S
TN-S TN-C-S
TN-C 1930- TN-S (.Terre-Neutre-Separe), , . , , . , . , .
TN-C-S, , , , , .
TN-C-S
TN-C-S . . (PEN), (PE).
TT
TT . , .
IT
IT , , . . IT , , , , .
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, , , ; ; , . 1 .
: () , . , . , . , . 380/220 . 0,4 .
. , , . , , "-" , , , , . , , , . .
TN-C, TN-C-S TN-S:
TN-C
http://ru.wikipedia.org/wiki/%D0%A4%D0%B0%D0%B9%D0%BB:%D0%A3%D1%81%D1%82%D1%80%D0%BE%D0%B9%D1%81%D1%82%D0%B2%D0%BE_%D0%B7%D0%B0%D0%BD%D1%83%D0%BB%D0%B5%D0%BD%D0%B8%D1%8F.PNG
TN-C
.PNG , N PE . PEN. , - PEN-. , . :
. .
-7
TN-C-S
, . PEN-, . , ( ) PEN- PE- N-, .
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TN-S
, , , , . , .
, . . , , , , . , - , . - , . , . , .