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Hi All.
I have moved into a residential house that has a three phase supply. There is a large cu with most circuits on but there is also a 60a hot tub and a 63a kitchen/cooker circuit taken from L1 . both use a standard single phase cu.They work fine. There is also a seperate single phase consumer unit with power taken from L3. it has a 80amp rcd 30ml protection. it only has one 32amp circuit. My problem is this circuit It seems to power up fine with 240/245 volts on a meter, the earth is connected directly to the main bar below the cu. the neutral is taken from the only neutral that looks to be supplying L1 and L2. But as soon as i plug in any unit ie kettle or can opener the rcd trips. However the rcd test button is not working when pressed.
Any ideas greatly appreciated.
Thanks
I have moved into a residential house that has a three phase supply. There is a large cu with most circuits on but there is also a 60a hot tub and a 63a kitchen/cooker circuit taken from L1 . both use a standard single phase cu.They work fine. There is also a seperate single phase consumer unit with power taken from L3. it has a 80amp rcd 30ml protection. it only has one 32amp circuit. My problem is this circuit It seems to power up fine with 240/245 volts on a meter, the earth is connected directly to the main bar below the cu. the neutral is taken from the only neutral that looks to be supplying L1 and L2. But as soon as i plug in any unit ie kettle or can opener the rcd trips. However the rcd test button is not working when pressed.
Any ideas greatly appreciated.
Thanks