Code issues [RE-wrenches]
Joel Davidson
joeldavidson at earthlink.net
Mon Jan 28 20:13:07 PST 2002
What's there to throw tomatoes at? Does NZ have a better set of rules?
Does any nation have a better set of rules than the National Electrical
Code?
Bill Brooks wrote:
>
> Carl,
>
> It would have been really difficult to choose four more contentious issues
> than the ones you have chosen in your examples.
>
> 1. Lockable disconnects are a utility union lineman requirement and is not
> necessary unless the union says it is.
>
> 2. Battery cables should be rated for whatever their use is (wet, acid,
> conduit, etc...)
>
> 3. You've probably read all the stuff on grounding. System grounding does
> not make a system safer--but neither does ungrounding. The key is design. A
> well-designed ungrounded system is probably better than a well-designed
> grounded system.
>
> 4. This relates to #3. Every ungrounded system must have a means of
> detecting ground faults (fairly easy to do). Every grounded system operating
> above 50 volts should have ground fault protection (in my humble opinion).
> So leave out 12 and 24-volt grounded systems--everything else needs it.
>
> Now if you'll excuse me, I need to retreat to my bunker to get out of the
> way of all the flying tomatoes.
>
> My collegue Chuck Whitaker and I have worked on codes and standards more
> than most here in the states, and I'll warn you, it is a thankless but
> necessary job. Try to think down the road a bit and make judgements on the
> good of the industry as a whole. You'll do just fine.
>
> -----Original Message-----
> From: Carl Emerson [mailto:freepower at freepower.co.nz]
> Sent: Monday, January 28, 2002 6:01 PM
> To: RE-wrenches at topica.com
> Subject: Re: Code issues [RE-wrenches]
>
> Dear Wrenches,
>
> In NZ we are travelling on the road to regulation. I am well aware that many
> of
> the code compliance requirements in the US are considered by many to be
> draconian.
>
> Can you assist with the issues to avoid.
>
> What aspects of the code impede the industry, yet are not really addressing
> safety issues ?
>
> Is a lockable disconnect really needed?
> Should we be able to choose cables with a lower spec.?
> Do the earthing requirements make sense?
> Is GFI really needed?
>
> I realise that there may be diverse opinions about some of these issues but
> I
> think there will be wide spread agreement on some ?
>
> John V and I are on the board of the NZPVA and have an opportunity to steer
> code
> and regulation issues in a sensible direction.
>
> Many Thanks,
>
> Carl Emerson
> Manager
> FREEPOWER LTD. "Harnessing Natural Energy"
> P.O. Box 10-1207 N.S.M.C. Auckland, NEW ZEALAND.
> Ph. 09 4275206 fax 09 4275208 cell 021-633999 web www.freepower.co.nz
>
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