ᐅ Cable sheath damaged, but cable core filling and conductor insulation remain intact.
Created on: 21 Nov 2024 12:34
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Thilo1979
Yesterday, I chased channels into the sand-lime brick of an interior wall for the flush-mounted cables behind the sauna insulation and paneling that will soon be installed. At a distance from the flush-mounted boxes, where I no longer expected or was looking for any cables, I accidentally nicked the jacket of a NYM 3x1.5 cable over a short length (2cm (1 inch)).
The filler inside the cable is intact, as is the insulation of the individual conductors; the cut only scratched the cable jacket, so you can see the filler material (see picture).
Is this
a) a real problem because of possible chemical reactions between the filler/conductor insulation, the sand-lime brick, and moisture or the plaster I will use to seal the channel, which could damage the conductor insulation,
or
b) solely an issue from the point of view of electrical regulations such as VDE or our insurance, in case any cable problems ever arise in that area, since the cable jacket mainly provides mechanical protection in an otherwise dry environment but must remain intact according to the rules, or
c) both, or
d) neither?
If it is a problem, what would be a VDE-compliant solution?
I could detach the cable from the rest of the wall and apply heat shrink tubing at the damaged spot, or—more involved, since I would need to carve out some additional space—I could install a cable joint sleeve.
If anyone feels the need to give additional advice on electrical installations beyond my question: the electrician will see everything and will be the one to connect the sauna heater in the end. I just don’t want to bother him with questions every other day before then.
The filler inside the cable is intact, as is the insulation of the individual conductors; the cut only scratched the cable jacket, so you can see the filler material (see picture).
Is this
a) a real problem because of possible chemical reactions between the filler/conductor insulation, the sand-lime brick, and moisture or the plaster I will use to seal the channel, which could damage the conductor insulation,
or
b) solely an issue from the point of view of electrical regulations such as VDE or our insurance, in case any cable problems ever arise in that area, since the cable jacket mainly provides mechanical protection in an otherwise dry environment but must remain intact according to the rules, or
c) both, or
d) neither?
If it is a problem, what would be a VDE-compliant solution?
I could detach the cable from the rest of the wall and apply heat shrink tubing at the damaged spot, or—more involved, since I would need to carve out some additional space—I could install a cable joint sleeve.
If anyone feels the need to give additional advice on electrical installations beyond my question: the electrician will see everything and will be the one to connect the sauna heater in the end. I just don’t want to bother him with questions every other day before then.
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Thilo197929 Nov 2024 10:37MachsSelbst schrieb:
You shouldn’t ask a question if you don’t like the answer and already think you know better, even without being a professional. Maybe it would be better to simply not contribute at all when the person asking has explicitly requested no such pointless posts. And honestly – our electrician is a professional, and his opinion clearly differs from yours, who apparently invented the profession yourself.
So please educate those who actually ask for it with information you truly know—and that no professional would dispute.
But if you want, and it somehow soothes your rarely appreciated soul, feel free to spam this thread from here on with unsolicited and factually incorrect corrections. My problem has been resolved without your input anyway! Let the world see and appreciate you and your wisdom—what else do you want to explain to us?
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Teimo19882 Dec 2024 18:30If neither the RCD nor the circuit breaker trips, heat shrink tubing should be fine. If you don’t have an RCD installed beforehand, then it would be worth considering.
Of course, this is just a personal opinion without any liability or guarantees.
Of course, this is just a personal opinion without any liability or guarantees.