if it like the in the united state the earth( ground wire) is only ther to prevent a possible electrical shock. another words if he hot ( live wire) cam loose and charged the housing (this being the bulb metal cage) the charge would simple ground out. If I remember my electronic's trainning that would cause it to trip a breaker( blow the fuse) as the load would go over the set limit of the breaker.
Now this is in United States were we run 120 alternain current ( ac) I am not sure how onthe far side of the pond things are ran.
but if you go with out the ground i simple check the wires every couple months or so (unplug and tighten any loose fittings) to be safe. the thing I remember is that all metalswill expand and contract as they get hot and cool( as the unit goes on and off ) soI would check it at least once a month if this heat bulb kicks on and off during the day/night to maintain a temp.
I also ask do you know if the place you live is grounded electrical ( asi n the wiring having a 3rd ground wire )?? cause other wise the grounding wire would need to be ran outside or to another grounding wire that leads to a true ground in the earth ??
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