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Posted By Topic: Before NZECP24

Dec 06 2017 14:21

May be showing my age here a little but can anyone tell me what the standard, COP, or otherwise was for installations prior to 1993 when ECP24 was issued?

Dec 06 2017 15:05

R 94 of the 1976 Regs was the governing rule.
Notes to the Reg cited various other documents - none of which I have.


Dec 06 2017 15:06

ECP 24 came out I think in about 1993 and they referenced AS2381.1 prior to that the regs only referenced a Britsh standard that explosion proof equipment had to comply with, which was BS229 ( NZSS 379 ) .
The wiring standard followed from around 1976 until AS2381 series came out was MP 6105, this was an extract from AS3000 part 1.


Dec 06 2017 15:33

There are 15 Notes.
Note 1 cites NZ Publication MP 6105: Electrical Wiring in Hazardous locations as the "minimum acceptable requirements for compliance with R 94.
Note 2 deals with flameproof enclosures, then Note 3 cites AS C98, JIS C 0905, VDE 0171, and relevant UL standards as 'suitable" for flameproof
4 calls for a seal in any conduits etc,
5 - 7 deal with intrinsically safe
8 cites a bunch of docs for instrinsically safe including NZS 633.

Up to 15 which covers vehicle servicing pits; and including Note 13 about explosive risks in hospital operating theatres citing a dept of Health document ( maybe they were still using ether as anaesthetic?)

So the appropriate document to (try to) find depends on exactly what aspect you are dealing with


Dec 06 2017 16:22

Thanks Alec, that seems to back up my thinking that MP 6105 was the relevant document

Dec 07 2017 15:20

Thanks very much Gents. I knew someone would have an idea.