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I need to get tin to build a cabinet

faradio75

292

hace 5 años

I am in the city of Buenos Aires. I do not know if what is commercially known as tinplate is the same as brass, but the point is that I need to assemble a small makeshift cabinet, and it does not justify buying one of those sold, because they are quite expensive in themselves. I was finding out, but not in Mercado Libre do I find someone who sells prints. I need a thickness of no more than 0.5 mm, to be able to fold and cut it easily.

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elektomaq

62.202

hace 5 años

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hace 5 años

Tin and brass is not the same, they are different materials, in Buenos Aires, it is full of places to get those materials in different thicknesses for example https://articulo.mercadolibre.com.ar/MLA-613339545-chapa-galvanizada-lisa-c25-050-mm-122-x-244-mts-oferta-_JM

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faradio75

292

hace 5 años

I appreciate the answer. These galvanized are good current conductors, just like any other sheet, right?

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elektomaq

62.202

hace 5 años

Not so much that if it was black but yes, you also have the option of black sheet if your intention is to paint it would be better
What kind of cabinet do you want to make or what use will you give it?

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faradio75

292

hace 5 años

A cabinet that is part of the mass of a circuit, taking the necessary precautions.

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faradio75

292

hace 5 años

If you want to insulate it, I don't know if you can paint it with synthetic enamel on the outside.

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elektomaq

62.202

hace 5 años

What type of circuit is it? What tensions would I be exposed to?

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faradio75

292

hace 5 años

It is a pure resistive circuit, for a phantom load of 40 W. I don't know exactly the voltage and current values, but I think they are more or less considerable.

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elektomaq

62.202

hace 5 años

Unless it is an MBT circuit (very low voltage), the cabinet cannot be used as an integral part of the circuit (ground) unless it has an enclosure isolated from it.

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elektomaq

62.202

hace 5 años

What you want is isolation class 0 and that would be prohibited

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elektomaq

62.202

hace 5 años

Painting it is not an option. I recommend a plastic cabinet and the dough make it through a sheet of metal or brass inside

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faradio75

292

hace 5 años

Yes, I thought about the plastic cabinet, and if possible be fire retardant, just in case the resistance gets very hot. In any case, the connector will always be insulated 0, because it goes directly to the resistors.
I'm going to look for some economical plastic cabinet, because if I leave the initial metal, and cover it for example with rubber, I find it very expensive.

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elektomaq

62.202

hace 5 años

There are several things
1. The temperature of the area, but if there is resistance
2. The external cabinet can be made of sheet metal but must not be an active part of the circuit and always linked to ground, for this the mass of the circuit could be isolated from the cabinet
3. The location and access to the cabinet, in case it is energized, direct contact can be prevented through barriers and other mechanical means and signaling

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