Polarity of 12 Volt Plugs and Sockets
Submitted: Wednesday, Feb 18, 2009 at 15:21
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PeterInSa
Need to run my 240 volt shaver from an inverter. Bought the socket to wire into the battery and the plug to wire into the Inverter.
When I queried the polarity of the plug/socket was told there is no standard. I am going to connct the earth (neg) to the vertical pin on the Plug/socket and the positive to the horizontal pin. This to me seems to fit in with 240vac plugs where the earth is the vertical pin.
Comments appreciated.
Peter
Reply By: Maîneÿ (wa) has - Thursday, Feb 19, 2009 at 00:33
Thursday, Feb 19, 2009 at 00:33
This post is about the "Polarity of 12 Volt Plugs and Sockets"
Peter needs to run his 240 volt shaver from an inverter.
He has bought the SOCKET to wire *into the battery* and the PLUG to wire *into the Inverter* this is a 12v (nominal) cable not 240 Volt.
Peter is asking about connecting the earth (neg) cable to the Vertical pin on the Plug/socket and the positive (pos) to the Horizontal pin.
As I read the post these are 2 x single cable connections, with the (+) to (+) and (-) to (-) at each end of each individual cable, they will NOT interchange current with each other as they are individual cables, just like an 'extension' cable is.
As I read it, it's not relevant to 240 Volt connections because the cable is 12 Volt (nominal) between the Battery and the Inverter!
The lead out of the Inverter is definitely 240v and a conventional 240v power board can be plugged in to the Inverter 240v outlet socket to supply power to the shaver and various other 240v accessories. Image Could Not Be FoundMainey . . .
AnswerID:
349798
Follow Up By: RV Powerstream P/L - Thursday, Feb 19, 2009 at 08:51
Thursday, Feb 19, 2009 at 08:51
Mainey
I listed As/NZS 3001:2008 as reference
information but Geoff is correct in his statement as Notes in this Standard under
3.4.4.4 Isolation Requirements for on -board and plug connected generators and
inverters notes
(2)The extra-low voltage d.c wiring to the inverter input or the d.c.source of supply source is not detailed in this standard.
AS/NZS 3000 provides this
information.
AS/NZS3001 2008 is a recommendation which may be legislated in the future but AS/NZS3000:2007 is legislated and legally binding on everyone to comply.
Ian
FollowupID:
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Follow Up By: Maîneÿ (wa) has - Thursday, Feb 19, 2009 at 09:36
Thursday, Feb 19, 2009 at 09:36
So now we need a certificate of 'worthiness' when we do our own or for others or have done ANY 12v work on vehicles because it have to comply with AS/NZS 3000 ??
However the original post question remains, would it be given this 'tick of approval' under AS/NZS 3000 ??
I've seen some pretty dodgy wiring set-ups !!
Mainey . . .
FollowupID:
618111
Follow Up By: RV Powerstream P/L - Thursday, Feb 19, 2009 at 16:57
Thursday, Feb 19, 2009 at 16:57
Mainey
No one may ever police it but if your name is on an installation and someone gets killed or injured they will look for a scape goat and and Im bloody sure my name is not going to be Billy and neither should yours be.
To requote AS/NZS 3000 is legislated and is legally binding whereas a lot of other standards are recommendations of good and acceptable practice.
Ian
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