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Band I / Band II cct separation

Farmboy
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?


F
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    Inside equipment, because it can be type tested for approval (think of a megger-like test) you can show that an alternative arrangement is possible.

    For example on a PCB with primary and secondary votages on the same side, I'd expect clearances to be to IEC-60950-1

    it very quickly gets confusing. c


    Of course you can fit  transformer in a CU. But unless the bellwires at 12 V or whatever coming out are over-sleeved to a standard that can hold off mains, you should really bring the ELV out in mains flex.
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    Inside equipment, because it can be type tested for approval (think of a megger-like test) you can show that an alternative arrangement is possible.

    For example on a PCB with primary and secondary votages on the same side, I'd expect clearances to be to IEC-60950-1

    it very quickly gets confusing. c


    Of course you can fit  transformer in a CU. But unless the bellwires at 12 V or whatever coming out are over-sleeved to a standard that can hold off mains, you should really bring the ELV out in mains flex.
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