Hi ebow,
Yes, you were ok working it out to the value given in the regs/ test paper you were looking at, I had read quickly through the posts and mentioned the correction factor.
If you were doing a PIR or working it out for real, you would need to apply the 80% rule to the values given in BS7671 book to take account of the max temperature of the cable, to see if it complies or not.
See: Zs values in Table 41.3 of BS7671 (see APP 14 in BS7671).
This was entirely my fault, I hadn't read the whole of the thread properly, and did not realise what you were asking, sorry I did not mean to confuse you.
Yes, you were ok working it out to the value given in the regs/ test paper you were looking at, I had read quickly through the posts and mentioned the correction factor.
If you were doing a PIR or working it out for real, you would need to apply the 80% rule to the values given in BS7671 book to take account of the max temperature of the cable, to see if it complies or not.
See: Zs values in Table 41.3 of BS7671 (see APP 14 in BS7671).
This was entirely my fault, I hadn't read the whole of the thread properly, and did not realise what you were asking, sorry I did not mean to confuse you.
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