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Forums › Transport (cars, bikes and boats) › Consultation on Electric vehicle (EV) chargers for residential applications (DZ 6011:2020) closes 22/01/2021
cthombor

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#280587 26-Dec-2020 12:04
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Standards NZ is currently consulting on draft PAS (publicly available standard) DZ 6011:2020 to provide "advice and information to New Zealand consumers on the charging of electric vehicles (EV’s) at residential premises."   Consultation closes 22 Jan 2021.

It's a very important and timely topic IMHO, so I'm hoping they'll get some constructive feedback -- please consider doing this yourself!   I'm planning to submit.

 

I'm a newbie on this forum so am not allowed to post hyperlinks, apologies for the inconvenience.

 

 

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SomeoneSomewhere
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  #2627269 27-Dec-2020 21:27
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SirHumphreyAppleby:

 

This discussion is beyond my area of expertise. I'd like to see a bit of a summary so we can decide if it's something we need to be concerned about.

 

I recently had a 32A socket installed with the intent of making what would normally be a fixed charger portable, by adding a suitable plug instead of hard wiring it. Obviously, this new circuit is RCD protected, but it's not dedicated to vehicle charging.

 

Does anything about this proposed standard limit my ability to do what I have been or intend to be doing?

 

 

The current Worksafe 'guidelines' and I think this new proposed standard both say that your RCD has to be a special Type B, which is sensitive to certain types of faults that normal RCDs aren't, as most loads don't act quite like EVs.

 

Chargers above 20A must be hardwired per those guidelines, although the addendum contradicts the original. Note that these documents have no legal force beyond being 'best practice' - technically you can violate them, but in general if anything goes wrong it's on you/your sparky to explain how what you did was as safe or safer than the guidelines.

 

They actually answer quite a few of the questions we've had in this thread previously, particularly section 1.7.

 

Batman:

 

how many A is a normal house mains electrical supply rated to? sorry dumb Q

 

 

Typically 63A single phase, which is quite marginal in some cases before adding an EV, if you have electric heating, water heating, and cooking.

 

Larger properties may have three phase at between 40 and 100A per phase depending on load and who chose the size.

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