I am not going to answer this question as I can see difficulties .
If this is a legitimate question then this person should not be doing any thing with this system as they really need an electrician to do the work.
It sounds a like it could be some person trying to get an answer to use against NACHI.
If you have to ask questions like these, then you should not even go near 3 phase wiring, electricity is very dangerous, you need to ask or hire a qualified electrician not a home inspector. Please be careful, there are some things that should not be attempted by a Do-it-yourselfer, and this is one.
lol…I will simply say this…You are in Singapore…get a Singapore Electrician to assist you…about all I will say on that statement.
Oh…I should mention…" Earth" wire…I think before we could answer that question anyway you need to understand that Earthing is one thing( Grounding )…Bonding is another…and generally a Equipment Bonding Conductor which is bonded properly in the service enclosure…and then directly CONNECTED to a leg of a 3 phase motor via this “Earth” which I assume you mean Equipment Grounding Conductor ( which is really a BONDING Conductor )…well…listen to my suggestion in the FIRST part of this post and be safe.
Wrong Wiring…8/13/07 12:02 AMya gotta love these questions XXXXXXWhy give me a BLACK BOX for this…lol…guys if you want to give me GREEN boxes you have to actually CLICK approved…lol…not take the default…lol
Wrong Wiring…9/4/07 12:45 AMLook…I got another one…Pinheads never put their name and it is probably the same PinHeads who call me all the time for help…go figure you freakin LOOSER…yeah I am talkin to you…PinHead…lol…you know who you are.