Need a bit of help please

[davesparks]

Seeing as your the only person to be serious mate,
It’s a 50m run on basket
I have on my drawing a 27kw 3-phase +N isolator
That is all it’s max travel through celotex is 3m
I have looked into it before I posted
Something along the lines of this

Amps=27kw divided (square root 3 x pf (1.0) x volts (400v) )
I get around 89a which doesn’t sound right to me On 3 phase unless I’m missing something

Also looked online and it’s come out on a calculator

39a per phase so a 40/45a 3phase Mcb would be suitable

Am I wrong here at all ?

Thanks

There isn’t enough information to be able to do the calculations.
Without knowing what the load is it is not really possible to establish whether an mcb is suitable or if fuses/mccb protection is required.

 

[westward10]

Thankyou it’s not me being lazy I’m

And you are may I ask ???? You sound like the typical knob head who thinks they know everything behind a keyboard

Reported

 

[Octopus]

Thankyou it’s not me being lazy I’m

And you are may I ask ???? You sound like the typical knob xxxx who thinks they know everything behind a keyboard

I think you were the knob xxxx posting such a vague question and expecting people to get their crystal balls out.

 

[DPG]

And you are may I ask ???? You sound like the typical knob head who thinks they know everything behind a keyboard

I'm someone who knows what information is needed to spec a supply cable. Who were you again?

By the way, you missed my deliberate mistake in my post

 

[Grant collison]

I'm someone who knows what information is needed to spec a supply cable. Who were you again?

By the way, you missed my deliberate mistake in my post

I couldn’t actually give a ---- what your on about your just a stuck up knob end that quite frankly has no impact on my life at all so crawl back under you shell as your little man syndrome is getting worse every time you talk, taddaahhh ----er

 

[Darkwood]

@Grant collison

I am closing this thread, I suggest you consider your manner if you wish to continue on the forum as throwing out insults like you have been is not on, if you dont like a response then either ignore it or if it is really offensive then report it but please refrain from taking it on yourself to react in the manner you have shown.

Ps I suggest you start a new thread and show a little more composure in your responses.