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Reply to "Protecting a Lionel KW transformer."

Originally Posted by GGG:  Hi,  Have you replaced the binding post before?  What the best way to remove the old binding post from the KW Transformer?
Alex, Not hard to open the KW do a basic inspection. I have had to work on some ZW and KW that had been rode hard. Others hardly ever used. It is worth checking to ensure it has not been modifed, or internally damaged.

Look for terminals that are loose, or replaced with nut style vice rivet. Dull, or melted varnish, broken tabs on the aluminum frame, good insulation on the wires.

I think your principle is fine and you can keep it simple by just using the 2 variable outputs at 5 amps each.

Use smaller gauge (thicker wire) from the transformer to a buss. Than you can use larger gauge (thinner wire) to each accessory. If each accessory is wired individually, then that wire will only carry that load.

The fast blow fuse or a circuit breaker will protect your wiring and transformer (placed between buss and transformer).

I don't think it is necessary to fuse each accessory, unless you are going to string a number of them in series (which I don't recommend).

Remember a PH is 180W at 10 amps, so nothing is really abnormal here. G

 

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