Sorry, this isn't about routing - but I'm in a jam.
Due to my total hopelessness concerning all things electrical I'm in a fix over getting my table-saw back into action after a long period of disuse. The saw is a TK 1800 UV Herkules, marketed by a German company but, if not assembled in Asia, consisting I suspect mainly of parts from there (including its NVR switch).
I began testing by simply pressing the 'on' button. It worked - the first time. Having hit the 'off' button I then pressed it again and this time it only ran for so long as I kept it pressed manually: as soon as I took my finger off it the saw-blade ran down and stopped. So thinking I'd better check to see if there might be some obvious way in which I might get it to go i demounted the switch.
I attach pic. The type will doubtless be familiar to anyone knowledgeable. For my part, having tinkered with it a bit and read-up on various websites, I gathered that it's of the magnetic type. It seems that by pressing the 'on' button a contact is mechanically created and the circuit completed while at the same time the magnet by being energised latches it in that state until pressing the 'off' button unlatches it (again mechanically). I hope I've got that right. The mechanical actions seem to function correctly (being so simple there's nothing much that can go wrong) but the switch now fails to work at all so I conclude that a connection to the electro-magnet must be faulty and the switch therefore useless.
Going by appearance alone I ordered what I took to be an exact duplicate of my switch on E-Bay, from Hong Kong. Because I despaired of being able to successfully connect-up a replacement the last thing I wanted was to disconnect the existing switch, but my hope was that if the two were virtual clones I might be able to get round that by cannibalising from the new one (eg by swapping-over their respective front sections). That idea didn't work because they aren't in fact exact clones.
The new one seems (to my untutored eye) to be designed to be used with a three-phase motor (whereas my saw's motor is single-phase) and the connections on the two switches are completely un-alike. The existing switch has what I take to be two duplicate sets of connections on the back side of the switch to which go two pairs of (I presume matching - one pair in and one out) wires with almost completely indeterminate colour-coding which terminate in plastic-sheathed spade-terminals, and two bared earth-leads which go to screws on the saw's chassis (pics attached). The new switch has three matching pairs of connections each numbered from 1 to 3 (one in and one out for each phase perhaps?) and seemingly no ground.
Can these two switches use the same wiring or are they completely incompatible? If they are I shall simply have to send for another one but then I shall still have the problem of telling which wires to connect to which terminals - leaving the earth connections undisturbed meanwhile. Can anyone offer any guidance?
(I do incidentally have a three-phase supply available in my shop but I imagine that that's completely irrelevant in this case).