Is there a reason why all conventional domestic electrical wiring fittings use exclusively slotted screw heads, rather than the much more practical Phillips or Pozidrive heads? Don't tell me that electricians can only carry one screwdriver?
In comparison here we have a typical UK consumer unit, I phoned the manufacturer of these several years ago to complain about the low quality of the terminal screws.
I did the terminal screws up using a torque screwdriver and the threads were so badly machined that I could pull conductors out. I had to tighten up the screws without inserting the conductors using a slotted screwdriver in the plus/minus screwdriver because a pozi just cammed out, then slacken them off to insert the conductors and tighten them up again with the torque screwdriver, I still wasn’t totally convinced that they were actually torqued correctly.
The screws are the cheapest components in the assembly and should also be the easiest to source, why they have to be of such low quality is beyond me.
In comparison here we have a typical UK consumer unit, I phoned the manufacturer of these several years ago to complain about the low quality of the terminal screws.
I did the terminal screws up using a torque screwdriver and the threads were so badly machined that I could pull conductors out. I had to tighten up the screws without inserting the conductors using a slotted screwdriver in the plus/minus screwdriver because a pozi just cammed out, then slacken them off to insert the conductors and tighten them up again with the torque screwdriver, I still wasn’t totally convinced that they were actually torqued correctly.
The screws are the cheapest components in the assembly and should also be the easiest to source, why they have to be of such low quality is beyond me.
