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Old 12.02.2020, 16:16
Tom1234 Tom1234 is offline
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Re: Electrical wiring - routing in a concrete house built in the 70s

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I guess FI/LS somehow refers to the RCD. I just wondered if anyone know what the letters stand for?
FI: Fehlerstromschutzschalter

(This is your RCD).

LS: Leitungsschutzschalter

(This is your circuit breaker)

So, on this context, LS is basically your electronic over-current fuse and a device with FI/LS also is a residual current device.
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