IIRC the cooling towers do have specal safety producres if you used the immerison heaters and yes you must have a disconnection switch if you go in the " restricted " area.
If this on 3Ø you can get this on GFI relay or GFI breaker it will sense any bad elements that shorting out it will trip the GFI and the alarm luminaire go on to give you a head up the heater malfuction.
Merci,Marc
Pas de problme,il marche n'est-ce pas?"(No problem, it works doesn't it?)
