My dream test bed

[Knobhead]

Like this?

View attachment 10455

 

[johnboy6083]

That's the ones. I remember that one of our tests was to wire a DC motor. We had to spin the motor and measure the resistance between the wires to find the armature ect.

 

[Knobhead]

Here’s one for you John, it was a 250HP fan. The b*****d thing bit me when fault finding on it. The open type ACB’s tripped just as I was stood in front of them. It tripped at 1250A The armature resistors were cast iron grids
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Don’t know how well this drawing will come out?

 

[Knobhead]

Another one for you John

View attachment 10488
These bring back memories