I recently learned what can happen when you connect switches incorrectly on a US range with no fuses!
I did replace a regular King Seeley (which was working fine) with a NOS correct type hydraulic-type Robertshaw Heat-Minder switch and rewired it. I took care to connect the same wires L1 and L2 terminals and everything seemed fine. The Heat Minder 8" and the other burners worked perfectly as I tested the Heat Minder and then the 3 other burners simultaneously.
<span style="font-size: 10pt;">Then I <span style="font-family: Verdana, Arial, Helvetica, sans-serif;">switched the Harvest Gold panels with white panels, </span><span style="font-family: Verdana, Arial, Helvetica, sans-serif;">installed the range at home. The next day, I was using the Heat Minder and then turned on the front 6" burner I heard "POW"! The 40 amps breaker had tripped in the basement...</span></span>
<span style="font-size: 10pt;"> </span>
<span style="font-size: 10pt;"><span style="font-family: Verdana, Arial, Helvetica, sans-serif;"> After checking a few things, I did reset the breaker and I noticed that the infinite switch for the small burner had gone bad but at least, my NOS Heat-Minder switch seemed fine! </span></span>
<span style="font-size: 10pt;"><span style="font-family: Verdana, Arial, Helvetica, sans-serif;">I looked at the wiring again as I suspected that I might have pinched a wire somewhere when I changed the range's color panels but everything seemed fine. I looked at the wires at the switches to be sure the L1 and L2 on each switch was on the same circuit and they were. So I looked at my parts inventory, had a NOS 6" burner infinite switch with the same part number, so</span><span style="font-family: Verdana, Arial, Helvetica, sans-serif;"> I installed it</span><span style="font-family: Verdana, Arial, Helvetica, sans-serif;">...</span></span>
<span style="font-size: 10pt;"> </span>
<span style="font-size: 10pt;"> </span>
Then I quickly reassembled the thing to finally cook my meal, turned the Heat Minder on and then the front 6" again and another "POW"! This time, both the new Heat Minder and the new infinite switch went bad!
So I looked a bit further, dismantled the Robertshaw Heat Minder switch that went bad as well as the King Seeley Infinite switches and I noticed that the pilot light circuit was wired to the L1 on the KS switch and on L2 on the Robertshaw!
But then, I had to find replacement switches and I I didn't have other new spares... I was able to find a another 6" switch that works with a different part number (but it's a correct replacement according to my parts interchange book) and I took parts from a much older, used Canadian-made Robertshaw Heat Minder switch from a damaged 1964 cook top that I had (which was assembled with Robertson type screws rather than flat screws) and I was able to save the damaged switch.
I ate a bit late that night but at least, everything has been fine since! Now, I can use the 4 burners simultaneously (unless the oven is locked for cleaning, then the rear 6" is switched off).
