Whether Water-Cooling of the Electrodes Is Required

One should normally avoid an electric furnace where water-cooled electrodes are required. In addition to wastage of power (due to water coohng) there is always a chance of sudden development of high pressure and accidents due to leakage of water from these electrodes. 

If water cooling cannot be avoided, the cooling water flow should not be pressurised, but preferably under negative pressure i.e. use a siphon for water flow. Provide an alarm for disraptions in water flow. 

---