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⚡ DPS deve ser instalado antes ou depois do DR? A regra geral da NBR 5410 é clara: o DPS deve ser instalado antes do DR. O motivo é simples. Se o DPS estiver instalado depois do DR, a corrente de surto passará primeiro pelo dispositivo diferencial residual. E nem todo DR foi projetado para suportar esse tipo de solicitação. A própria NBR 5410 estabelece que, quando o DPS for instalado a jusante do DR, o dispositivo diferencial deve possuir imunidade às correntes de surto. Na prática, i...
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