Need help wiring up 240VAC.

[redwire]

Re: Need help wiring up 240VAC.

I would follow codes and treat it just like wiring up a stove or dryer.
30A is usually 10/3 and 8/3 for 45A: http://www.cerrowire.com/application-charts

The unused neutral conductor, just tape up and leave in the junction box. You may change the outlet some day.


Conduit is required for multi-family dwellings (apartments), commerial buildings, and anywhere the cable is not supported (stapled)/exposed to abrasion etc.
I'm not sure what made your electrician use it for part of the run.

[stj]

Re: Need help wiring up 240VAC.

those panel-mount connectors are about 5-10us$ from EU suppliers.
if you need any it may be cheaper even with the added postage costs.

[budm]

Re: Need help wiring up 240VAC.

He is running the of the 240V US split-phase (120-0-120), so he will be suing two HOTS (L1, and L2) and SAFETY GND.
It will be dual-breaker type.
BTW, I also spec in IPC for the 30A export products.
They are expensive!

[stj]

Re: Need help wiring up 240VAC.

i'll try to be a bit more clear.
cable should be rated a bit higher than the socket(s) so if you overload the socket the breaker trips before the cable starts to warm up - fire prevention.
breakers should be rated equal to the total the socket(s) can handle - because in theory you shouldnt be drawing more.

but as i said, inrush needs to be accounted for.
your connector is LNE (live, negative, earth) live is fused, negative isnt, earth is to ground - dont confuse this with the split-phase in the rest of your house)
you can use 2 breakers if you want, i suppose that would let you miss-use the outlet for 120v if you needed.

[stj]

Re: Need help wiring up 240VAC.

So what gauge wire do I need to run to the receptacle? 8 gauge or would 10 work? And for breakers, do I really need 45 amp breakers or would two 30 amp's be good?

cant answer that.
firstly we rate cables differently here.
if your outlet is capable of 32a the the wires should be too - probably 4mm conductors.
breakers are tricky because you need to allow for inrush currents.
check your equipment for the peak inrush current.
you need to make sure the breakers are "c" type and have atleast 10Kv breaking current.
a lot of domestic stuff is "b" type and only 6Kv rated.
the b & c thing is trip sensitivity.
b type can give false tripping on big inductive loads.

btw, why 2 breakers?
you only need a breaker on live - not return.
it's a single phase supply.
(or is it??)

[Spork Schivago]

Re: Need help wiring up 240VAC.

btw, go to a gunshop or range and ask for some empty 7.62x39 or larger cardboard ammunition boxes.
then keep putting them out with your trash.
that should deter thieves!

LOL!!!!! Leaving some empty .234 rounds laying around should do pretty well I'd think.

[Spork Schivago]

Re: Need help wiring up 240VAC.

So what gauge wire do I need to run to the receptacle? 8 gauge or would 10 work? And for breakers, do I really need 45 amp breakers or would two 30 amp's be good?

[stj]

Re: Need help wiring up 240VAC.

btw, go to a gunshop or range and ask for some empty 7.62x39 or larger cardboard ammunition boxes.
then keep putting them out with your trash.
that should deter thieves!

[Spork Schivago]

Re: Need help wiring up 240VAC.

I guess the server is just grounded through the plugs, which plug into the PDU, which gets grounded to the receptacle (and apparently the rack), and the switch gets grounded to the rack I believe. Everything with a grounding screw / bolt I think gets grounded to the rack....

[stj]

Re: Need help wiring up 240VAC.

i have no idea about the rack or related equipment,
i'm just talking about the hookup between the power inlet and mains supply.
it's feasable you need to ground-link the rack to each item in it incase the powdercoat or whatever the finish is prevents a good connection via the mounts.

[Spork Schivago]

Re: Need help wiring up 240VAC.

But having the grounding screw, it doesn't hurt to ground it to the rack, does it? The rack seems to have multiple green bolts (one in the front left (next to three normal coloured bolts), one in the front right, two in the rear left, two in the rear right). I believe those are meant to be grounded to equipment perhaps? And some of this stuff came with wire that looks like it goes to the bolts, for grounding....If I ground the PDU to the rack, and the various other equipment to the rack, and the blue plug provides the ground, that'd be my ground from the rack to the mains, right?

Patch panel gets grounded I believe, the ethernet cable has to be grounded on one end, not the other (the drain wire). Switch gets grounded, and I could have sworn this pesky server got grounded somehow as well.

[stj]

Re: Need help wiring up 240VAC.

yes, the datasheet you linked states a 25mm threaded entry on the top for your cable conduit.
they all follow the same design btw for compatability.
if you look at all the ones i linked they all have a similar mounting box.

ground is handled through the blue connector - you should do a continuity check from the plug to that screw.
if it's good then no worries - if not you need to bitch at the seller for not wiring that plug correctly.
the IEC connectors always link the grounding first - the pin is longer.

[Spork Schivago]

Re: Need help wiring up 240VAC.

yea, that will work, top entry round threaded inlet.
the 16A ones are 25mm - not sure about the 32mm ones, but you can get thread reducers.

Speaking french here brother! That one I just linked to, the one I said I thought I'd buy, does that have top entry round threaded inlet?

Also, in the pics of the PDU, I showed the ground wire. A sticker says that must be hooked up before plugging the PDU in. I don't want to create a ground loop. Do I just ground that, using 10-gauge wire, to the rack somewheres?

I don't see one on the actual server, but the switch I have has a grounding screw as well....I'm pretty sure I read something about how the server itself is supposed to be properly grounded as well.

[stj]

Re: Need help wiring up 240VAC.

Is aliexpress a good place to buy from? I thought that was generally cheap stuff, quality wise I mean.

ali is a marketplace - you can find all types of stuff.
that linked item is certified to chinese electrical standards only - probably because it's not really exported.

hence my question about marks.
have to say those u.s. connectors are never going to pass a chinese or european safety thing though.
exposed pins, no resessed mating surfaces, no shutters - bad joke really.

[Spork Schivago]

Re: Need help wiring up 240VAC.

I might go for that https://www.rapidonline.com/23-2994 That says it's meant to be mounted to something, so that's good.

Supposedly this plug is a plug used in the US, but I gotta say, I've never seen any plugs like this in my entire life. You're from Europe. Are these common over there? It was HPE tech support that said yeah, it's got an American 1-phase plug on it.

[stj]

Re: Need help wiring up 240VAC.

This is the 240VAC twist and lock NEMA L6-30-R he installed for my BGA rework station. I was thinking something like this. Just instead of a NEMA L6-30-R twist and lock, it'd be the proper one.

yea, that will work, top entry round threaded inlet.
the 16A ones are 25mm - not sure about the 32mm ones, but you can get thread reducers.

[Spork Schivago]

Re: Need help wiring up 240VAC.

second along.
https://www.aliexpress.com/item/32A-...859442890.html

Is aliexpress a good place to buy from? I thought that was generally cheap stuff, quality wise I mean.

[Spork Schivago]

Re: Need help wiring up 240VAC.

your plug is IP44,
the colour indicates the voltage.
120v = yellow
240v = blue
400v = red
if it's light purple - dont mess with it!

so about these building codes:
does the outlet need a specific safety mark?
UL for example?

I don't think it needs a special mark, it just needs to be rated for basements, essentially. I don't pretend to know the NEC (National Electric Code). I know a little bit of it, but not enough. That's why I came here and asked my original question, hoping someone who knew the code better would come along. Worse case, I guess I could pay the electrician a lot of money again, but like I said, I don't think that NM-B is basement rated, and he used that. I remember at my old place, when I ran 240VAC under the house, I had to use the UF-M stuff. And someone ran UF-M stuff down here, but it goes out to the garage, so maybe NM-B is rated for the basement? I'll ask the CAC guy. He knows the code and knows others who do as well.

[Spork Schivago]

Re: Need help wiring up 240VAC.

hey, does that plug actually say 16 or 32A on it??

32A-6H. Sorry it's taking me so long to respond. I stayed up all night working on the business. I gotta stop doing that. Daughter's going to wake up soon. When that happens, I'll disappear until around 2PM EST.

[stj]

Re: Need help wiring up 240VAC.

lets fit one!
https://www.youtube.com/watch?v=B-PIZufr7bY

https://www.youtube.com/watch?v=0ShXpCg5yYc