My question is if you’ve got a lighting circuit and you ad addition loads to the circuit will this always trip the breaker if you add too much load on a circuit?
This is correct up to a point...........If you loaded a 40A lighting circuit up to 60 amps, on a 6mm circuit - it would last for - about an hour I believe - perhaps more - before tripping - repeated loading to 60Amps on a cable not rated for this would stress it out and lead to eventual failure of the cabling...... Id guess.
That cannot be right.
The given cable ratings must allow for the current likely for any compliant OPD and cable combination.
This is correct up to a point...........If you loaded a 40A lighting circuit up to 60 amps, on a 6mm circuit - it would last for - about an hour I believe - perhaps more - before tripping - repeated loading to 60Amps on a cable not rated for this would stress it out and lead to eventual failure of the cabling...... Id guess.
That cannot be right.
The given cable ratings must allow for the current likely for any compliant OPD and cable combination.
