I live at Malaysia where our main supply is running at 220-240V 50Hz. Bought a new house that comes with 3 phase wiring where my previous home is single phase. Below is part of the distribution board:
I don't quite how the rating works in this case because I'm replacing some components (3 pole switch to MCCB, RCCB and RCBO to ABB brand):
1. 415V at the 3 pole switch refers to phase-to-phase voltage(R-Y, Y-B, R-B) so phase-to-neutral voltage will be somewhere around 230V(415/sqrt3) right?
2. 63A refers to the maximum carrying current for each phase or the total current for three phases shall not exceed 63A?
3. The RCD will not trip if current rating is exceeded because it will only detect current and earth leakage. In this case what does the current rating 63A means?
Ps: Our national electrical wiring guide states that main switch should be lesser than RCD. For example: 60A for main switch, RCD 63A. I wonder if I use a 75A MCCB as main so I will burn my 63A RCD? The RCD shown above is for lighting.
The overall wiring following national wiring guide:
4. A 2 pole RCBO(for water heater) and 1P+N are they the same? With a 2 pole there's no neutral marking on wither terminal.
I have attached wiring guide. Don't be surprised it's 2008 Edition. Literally the same thing since then till now.
Any help is appreciated.
I don't quite how the rating works in this case because I'm replacing some components (3 pole switch to MCCB, RCCB and RCBO to ABB brand):
1. 415V at the 3 pole switch refers to phase-to-phase voltage(R-Y, Y-B, R-B) so phase-to-neutral voltage will be somewhere around 230V(415/sqrt3) right?
2. 63A refers to the maximum carrying current for each phase or the total current for three phases shall not exceed 63A?
3. The RCD will not trip if current rating is exceeded because it will only detect current and earth leakage. In this case what does the current rating 63A means?
Ps: Our national electrical wiring guide states that main switch should be lesser than RCD. For example: 60A for main switch, RCD 63A. I wonder if I use a 75A MCCB as main so I will burn my 63A RCD? The RCD shown above is for lighting.
The overall wiring following national wiring guide:
4. A 2 pole RCBO(for water heater) and 1P+N are they the same? With a 2 pole there's no neutral marking on wither terminal.
I have attached wiring guide. Don't be surprised it's 2008 Edition. Literally the same thing since then till now.
Any help is appreciated.
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