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Band I / Band II cct separation

Does the principal of Band I / Band II  cct separation re 528.1 apply within equipment? A DETA mechanical chime with internal transformer has LV and ELV wiring right near each other within the same enclosure (the lid of which is easily removable without tools), which seems to moot the requirement to have them separated as per the reg?


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  • I thought that had been answered, use sheathed 2 core 0.75 flex. I very much doubt that a din rail TX has ever been type tested in a CU, and can see no reason to do so. There are reasonable limits to apply here, read the type testing document and you will see why.
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  • I thought that had been answered, use sheathed 2 core 0.75 flex. I very much doubt that a din rail TX has ever been type tested in a CU, and can see no reason to do so. There are reasonable limits to apply here, read the type testing document and you will see why.
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