Pair the black wire together but first remember to off the main switch at DB or risk being electrocuted.
Green wire just attached to any bare metal at equipment.

The existing connection is correct except both black wire must be added together..


This post has been edited by magika: Jan 18 2013, 01:57 PM

Can, it seems you understand the concept.

Green wire exposed nevermind as its earth wire.

Just to be back to the topic, in an ideal situation three phase wiring neutral current will be 0 amps if all the phase are balance. However it is difficult to achieve that so in an unbalanced usage the neutral current will be be equal the most at single phase equivalent. Thats why only one neutral wire. Whereas single phase neutral current will be equal to total current comsumption.

TNB is using between 100 to 150 watt bulb. RM10 is all you have to pay every month.