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Generator/Shore Neutral-Transfer Switch

01/11/2014 10:18 AM

please have a look here

neutral cannot be separated as the wiring inside the ceiling was done with a single heavy wire for all the loads

i read everything in this forum, but could not understang

1.WHY should 2 grounded neutrals be connected together? there wont be any potential for a shock hazard.

2.if a floating neutral generator is connected to utility neutral,

then there will be a shock hazard to the electrical worker on the pole

if he switches off the grid power(along with neutrals) and generator is turned on from consumer side.

3.we dont use any RCD's or GFCI units

4. incase something wrong happens,

like generator phase and neutrals are reversed,

then the mcb will trip immediately as a phase wire come in contact with a neutral wire,

when the transfer switch engages

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#1

Re: Generator/Shore Neutral-Transfer Switch

01/11/2014 10:34 AM
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#2
In reply to #1

Re: Generator/Shore Neutral-Transfer Switch

01/11/2014 10:43 AM

ours is 230v system and

earth/ground is never switched at any place in india, atleast in my region...

we simply drive a eath rod and that green wire directly goes to 3 pin socket's earth pin...

and generator neutral is earthed as shown.

and I did see that page but didnt understand anything properly.

i saw 100's of pages(google-friend) but started getting pulling my hair on my head.

could you please explain me why?

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#3
In reply to #2

Re: Generator/Shore Neutral-Transfer Switch

01/11/2014 10:55 AM

I would contact a local electrical inspector and ask him.....or her...

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#4
In reply to #3

Re: Generator/Shore Neutral-Transfer Switch

01/11/2014 11:01 AM

okay will ask,

but what would you say? it is not a big issue, is it?

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#5
In reply to #4

Re: Generator/Shore Neutral-Transfer Switch

01/11/2014 11:17 AM

If you can get a copy of BS7671 (I know it doesn't apply in your area) there is a whole section on supplies at marinas etc. You will find it's quite a big issue.

As I understand it much of India uses UK regs.

It's copyright material otherwise I would copy and post it for you. (I'm not running to problems with CR4 or the IET.)

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Guru
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#6

Re: Generator/Shore Neutral-Transfer Switch

01/11/2014 2:49 PM

Your design is incorrect.

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#7
In reply to #6

Re: Generator/Shore Neutral-Transfer Switch

01/12/2014 6:29 AM

Wareagle, your diagram makes FAR more sense to me personally than the OP's, many thanks.

If the OP's diagram is accurate, it smacks of amateur electrical work, work that was incorrectly done, probably when the generator was added......I hope at least the work was cheap!!

By the way, I would not be surprised if the OP's diagram IS accurate, sadly!!

If accurate it certainly appears to be very, very dangerous as with a running generator online, it appears that the mains from the utility could be accidentally paralleled to the generator via that MCB below the Utility box.....

I negated the OFF TOPIC that some idiot gave you who obviously has no proper electrical training or knowledge or had some other unfair axe to grind......so you are back to a neutral (pun intended) position on this blog !!

I would have given you a GA if there had been none made anyway....as you beat me to a good diagram and comment!!! WELL DONE!!

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#8
In reply to #7

Re: Generator/Shore Neutral-Transfer Switch

01/13/2014 4:39 AM

if this is incorrect, then all the people in india, ALL use ths setup

this is also incorrect but everyone assumes this a "correct wiring"

so followed the same setup was followed with the 1st diagram...

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#9
In reply to #8

Re: Generator/Shore Neutral-Transfer Switch

01/13/2014 7:23 PM

Your diagrams are basically awful to my mind.

For starters here, how about a proper explanation in this recent example of that connection between inverter loads and non inverter loads????

Why run an inverter directly off the mains? Please explain why! I thought you meant an inverter producing mains voltage from Batteries, obviously not!!!

Where are the batteries/electrical storage in this diagram? Please explain why they are not needed!

AND YOU HAVE THIS IN YOUR LIVING ROOM????????

Try checking your work more carefully before posting......it just reflects on your knowledge and ability when logic is missing as are full explanations.....

I will read your improved explanation for this diagram with GREAT interest!!If there is going to be one!!

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