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- 22 Nov 2022
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Hi Guys
just recently bought a new house that came with a hot tub! Fun times,
after filling it up and switching it on, it works a treat huzzahh!
HOWEVER
The tub has its own 32Amp fuse on an RCD fuse board in an outbuilding, nothing else is on this fuse, tub only.
The wiring from this then goes outside to the tub to another smaller IP65 RCD with a DIN rail and 40A 30mA breaker.
This breaker switch does not function… regardless of switch on or off, Tub remains on.
(if the 32Amp fuse in main outhouse is switched tub powers on/off as it should)
I didn’t think too much of this and guessed the exterior fused switch was dead or it simply wasn’t wired up Or some such.
Upon isolating the supply and opening up the exterior British General box, I replaced the fuse with a like for like swap 40A 30mA fuse….
still nothing.. the new fuse wasn’t switching anything…. Tub was working great but this switch was doing nothing…
I then checked the tub itself just on off chance it was wired incorrectly and sure enough
Live was correct, but Neutral and Earth were swapped, hence switch wasn’t vitally switching anything. Odd I thought… I swapped them round so now correctly wired….
now main breaker is tripping.
I’m guessing I have a Neutral or Earth that is touching the live somewhere along the wire somewhere?
Or could it be the hot tub is drawing too much power upon start up and tripping the RCD? (I disconnected tub heater and pumps and tried switching on but still same issue, so I don’t think it’s anything wrong with the tub as it wouldn’t be drawing much power at all)
It appears whoever lived here prior had this issue of tripping and just swapped the earth and neutral to get around the issue, which doesn’t seem terribly safe)
any advice much appreciated, thanks all
just recently bought a new house that came with a hot tub! Fun times,
after filling it up and switching it on, it works a treat huzzahh!
HOWEVER
The tub has its own 32Amp fuse on an RCD fuse board in an outbuilding, nothing else is on this fuse, tub only.
The wiring from this then goes outside to the tub to another smaller IP65 RCD with a DIN rail and 40A 30mA breaker.
This breaker switch does not function… regardless of switch on or off, Tub remains on.
(if the 32Amp fuse in main outhouse is switched tub powers on/off as it should)
I didn’t think too much of this and guessed the exterior fused switch was dead or it simply wasn’t wired up Or some such.
Upon isolating the supply and opening up the exterior British General box, I replaced the fuse with a like for like swap 40A 30mA fuse….
still nothing.. the new fuse wasn’t switching anything…. Tub was working great but this switch was doing nothing…
I then checked the tub itself just on off chance it was wired incorrectly and sure enough
Live was correct, but Neutral and Earth were swapped, hence switch wasn’t vitally switching anything. Odd I thought… I swapped them round so now correctly wired….
now main breaker is tripping.
I’m guessing I have a Neutral or Earth that is touching the live somewhere along the wire somewhere?
Or could it be the hot tub is drawing too much power upon start up and tripping the RCD? (I disconnected tub heater and pumps and tried switching on but still same issue, so I don’t think it’s anything wrong with the tub as it wouldn’t be drawing much power at all)
It appears whoever lived here prior had this issue of tripping and just swapped the earth and neutral to get around the issue, which doesn’t seem terribly safe)
any advice much appreciated, thanks all