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Re: what type of disconnect is this
That's a pull out fuse disconnect.
The problem with not pulling them out is that you do not know if the right size fuses were being used, or if they had installed copper pipe, or if the fuses had been removed and the disconnect bypassed.
The problem with pulling them out is that you might end up with a couple of different size pieces in your hands, left in the enclosure, and on the floor.
I've found all of the above.
Years ago I used to pull out everyone of them, and if they fell apart, they fell apart - too bad. Then I started not pulling them out and just recommending replacement as the in$urance companies started not insuring fused panels, and they also said that included breaker panels with fused mains (such as is shown in your photo) - I know, I asked them. Now, whether or not that changed later on, I don't know.
WECO might be Westinghouse Electric Company (not sure, though).
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