S
sparky in training
good evening all!
sorry it is a late one. I have been doing a college assignment over the past 2 days which involves designing circuits calculating design current, volt drop and all that good stuff. One aspect is applying diversity. Now usually I am fine with this. I know to use table A2 of the OSG etc etc. however the tutor has confused me. He is saying take diversity from the value of your protective device. I am sure i never done that before.
If say I had a lighting circuit and it could draw 3 amps under full load surely I apply diversity of 66% of that value to get Ib design current? My tutor is saying if it is on a 6A MCB take diversity at 66% of the device rating.
This can't be right can it? He is adamant but I am also adamant . Completely confused about the whole thing now
Please help
sorry it is a late one. I have been doing a college assignment over the past 2 days which involves designing circuits calculating design current, volt drop and all that good stuff. One aspect is applying diversity. Now usually I am fine with this. I know to use table A2 of the OSG etc etc. however the tutor has confused me. He is saying take diversity from the value of your protective device. I am sure i never done that before.
If say I had a lighting circuit and it could draw 3 amps under full load surely I apply diversity of 66% of that value to get Ib design current? My tutor is saying if it is on a 6A MCB take diversity at 66% of the device rating.
This can't be right can it? He is adamant but I am also adamant . Completely confused about the whole thing now
Please help