FIELD: installation of plug sockets in newly commissioned houses or those reconstructed.
SUBSTANCE: installation of three-jack sockets in newly commissioned buildings or those subjected to reconstruction or overhaul involves insertion of 5-Ohm resistor into plug socket. One lead of resistor is connected to ground contact of socket and other one, to socket metal box. The latter is set in concrete or brick wall on non-insulating mortar. Power is supplied to socket from protective gear responding to differential leakage current. Proposed method provides for grounding power consumers in supply mains having no neutral conductor.
EFFECT: enhanced efficiency of phase-to-neutral fault protection.
2 cl, 1 dwg
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