27-02-2017, 09:12 AM
Heck of a big spike with the chokes, RCDs are often tripped by the spikes. My arc welder often trips on first connection and on disconnection but not when striking the arc.
We have up to 6 RCDs of various ratings from 30mA to 500mA in the line, it is still pot luck which trips, never understood why.
Some of the main ones are 3 phase, subs are single phase but there is no logic to it.
I am very confused about the currents in 3 phase and neutral cables, is there more energy dissipation in the neutral wire when there are 3 single phase supplies running. In other words, why are the neutral wires not thicker than the phases?
Thorn pop packs were very cheap fittings in their day.
We have up to 6 RCDs of various ratings from 30mA to 500mA in the line, it is still pot luck which trips, never understood why.
Some of the main ones are 3 phase, subs are single phase but there is no logic to it.
I am very confused about the currents in 3 phase and neutral cables, is there more energy dissipation in the neutral wire when there are 3 single phase supplies running. In other words, why are the neutral wires not thicker than the phases?
Thorn pop packs were very cheap fittings in their day.
Boater Sam.
