Electronics > Beginners
How to wire up a 240VAC receptacle
Towger:
There are a lot of worrying posts on this thread.
It is a PDU https://www.senetic.co.uk/product/P9S16A
He can't connect it to a two 240v phase supply without a neutral with its standard blue 32a plug, if the items plugged into it (if American and using C13/C14/C16 plugs) will expect 120v.
Richard Crowley:
According to this document: https://h20195.www2.hpe.com/v2/GetDocument.aspx?docname=a00002909enw
That PDU has the option of 14 different input plugs (including flying leads with no plug attached)
HOWEVER, note that the same model with North American NEMA plugs are DE-RATED
--- Quote ---NOTE: All Input Circuit Ratings for NA/JP models have been de-rated according to NEC requirements
https://h20195.www2.hpe.com/v2/GetDocument.aspx?docname=a00002909enw page 8
--- End quote ---
It is not at all clear why an EU model was specified for use in North America.
It is not at all clear what kind of (presumably 230V) loads will be plugged into this PDU?
I see NO evidence that this product was designed to accomodate "split phase" power input.
I would NOT want to connect this PDU (or the downstream loads) which may very well assume single-phase, ground-potential neutral.
The specifications clearly state "SINGLE PHASE" even for the 200-208V and the 220-240V versions.
This is a much bigger can of worms than the simplistic question about wiring a receptacle.
Ref: https://h20195.www2.hpe.com/v2/GetDocument.aspx?docname=a00002909enw
Spork Schivago:
--- Quote from: IanB on May 14, 2018, 10:05:17 pm ---
--- Quote from: Monkeh on May 14, 2018, 09:47:23 pm ---Why piss about with an adapter when you could just put the (in)appropriate plug the cable?
--- End quote ---
Also some versions of the PDU come with detachable power cords.
--- End quote ---
This has a nut on the end, but I unscrew the nut, and the wire is not detachable. I checked that first, hoping it was detachable.
Spork Schivago:
--- Quote from: Monkeh on May 14, 2018, 10:09:21 pm ---
--- Quote from: james_s on May 14, 2018, 10:08:19 pm ---One good reason to use an adapter is code compliance. As far as I know installing a foreign receptacle doesn't meet code, but it's perfectly legal to use an adapter. Whether or not this makes logical sense isn't really the issue, but if one decides to pay an electrician to install something it normally has to be done per code.
--- End quote ---
... no, why not just remove the 'foreign' plug from the cable and just put one of your unfortunate contraptions on and be done with it? Shove the NEMA 6-30 or L6-30 on the cable and forget about playing adapter games.
--- End quote ---
What gets me, this PDU isn't listed as a European PDU. It's listed as International, and according to HPE, it _can_ be used in the USA or Europe...which makes me think perhaps that's why the neutral isn't listed as neutral on the physical plug itself, just Earth and L/+ is listed...it leans more towards a European PDU than a North American one though, if that makes sense. The plug it's using is common over there, the built-in breakers show the derated values of the breakers, the plug itself shows the derated value of the plug (breakers shouldn't continuously handle a load more than 80% of what they're rated for, that 80% is called the derated value, and everything here shows the derated value (80% of 20 is 16, 80% of 40 is 32. The two breakers both show 16-Amp, the plug shows 32-Amp)).
Monkeh:
It can be used in the USA - on a single phase 208V supply. Not a split-phase 240V one, preferably.
--- Quote ---The plug it's using is common over there, the built-in breakers show the derated values of the breakers, the plug itself shows the derated value of the plug (breakers shouldn't continuously handle a load more than 80% of what they're rated for, that 80% is called the derated value, and everything here shows the derated value (80% of 20 is 16, 80% of 40 is 32. The two breakers both show 16-Amp, the plug shows 32-Amp)).
--- End quote ---
Bollocks. That's the American approach to breakers and that is not how they are rated in the rest of the world. A 16A breaker carries 16A continuous. A 32A plug handles 32A continuous. Those are not deratings, they are ratings.
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