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Topic Title: No more DP Switches??
Topic Summary: including 14th Ed rant!
Created On: 27 November 2014 10:53 AM
Status: Read Only
Linear : Threading : Single : Branch
 No more DP Switches??   - Shortercircuit - 27 November 2014 10:53 AM  
 No more DP Switches??   - AJJewsbury - 27 November 2014 11:08 AM  
 No more DP Switches??   - Parsley - 27 November 2014 11:17 AM  
 No more DP Switches??   - Zoomup - 27 November 2014 01:31 PM  
 No more DP Switches??   - AJJewsbury - 27 November 2014 01:46 PM  
 No more DP Switches??   - rogerbryant - 27 November 2014 03:27 PM  
 No more DP Switches??   - weirdbeard - 27 November 2014 05:59 PM  
 No more DP Switches??   - TMHajaSahib - 13 January 2015 09:34 AM  
 No more DP Switches??   - mapj1 - 13 January 2015 10:12 AM  
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 27 November 2014 10:53 AM
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Posts: 21
Joined: 01 July 2011

I was brought up under the 14th Ed. when life was oh so simple! the Regs book itself was handy sized and written as an instruction manual by those on high telling the likes of me exactly what to and what not to do.
You were expected to memorise as much of the contents as possible - how well I remember our instructors ('board training school) barking the question at some poor individual (at any juncture) 'name the first 5 sections of the wiring regs laddy' (none of your christian names stuff) - we could soon all recite them at the drop of a hat. You were certainly not allowed to take the book into exams.
Compare that instruction manual with todays edition - gradually rewritten as a book so complicated that most of the content of your C&G up-date course is based on navigation of the book rather than understanding the content. Surely it speaks volumes when over 40% of the book are appendices and the Contents do not even refer to page numbers??
I delve into this most expensive paperback infrequently usually to confirm that long held beliefs are still valid and to check the new latin terminology for things I like to call earth and make sure my CPCs have not reverted back to ECCs or perish the thought just plain earth wires.

Anyway enough of the ranting and back to DP switches! - whilst seeking to confirm that every 'appliance & luminaire 'should still have a (separate) switch which in the case of heating elements (touchable inc silica sheathed) should be DP etc etc - surprise I cant find the Reg I used to know. Does 537.2.1.1 realy do away with the need for any DP switches in most 'regular' installations other than the main switch? 537.1.4 (nice to see those on high still writing some Regs and not just 'ordinary' people) Have I missed somthing? is there a new latin term for double pole that got past me? are we over engineering our sw/spurs, cooker switches, fan isolators etc - could be usefull in the case of shower pull cords - we could link the DP making a 90A SP which could reduce the burn outs!!!
Seriously though is the old requirement for double pole switching lurking somewhere in the 17th - any thoughts welcome. thanks

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