The main earth neutral or m.e.n. explained

[@johnhannaway5182]

I’ve been in the trade a long time, this is the easiest to understand explanation I have seen. Well done

[@_Zen_Clips_]

I am a new Electrical Apprentice and this is very easy to understand, Thank you.

[@troyotapreuis6020]

15years ago my TAFE lecture did not explain it like this at all. Such a shame this part of an apprentice the lecture brushed over this swiftly. Your explanation shows how important it is and all under 30mins which was also very clear and precise. Thanks 🙏

[@praveensivakumar4912]

very clear explanation . easy and simple to undersand . thanks mate

[@michaelcarter3358]

Thank you so much for all these videos mate they are invaluable!

[@minabenjamin3660]

This video helped me a lot today, thanks a lot mate - appreciate the effort!

[@dalescott4570]

Thank you. Very easy to understand info. But i have a further question. In an off grid system (solar with lightning protection+inverter+generator) where does this link go? Do they all run to the same earth? Is there a way to separate the earths so that lightning or static electricity does not upset the rcd function? Is that even an issue? There is a real lack of info on this subject. Maybe im just looking in the wrong place?

[@johnkaisin8887]

The MEN (Multiple Earthed Neutral)

[@stonedsloth6367]

man eats nuts

[@kelsie9912]

very handy video thanks! Would be great if you could use a chopstick or something instead of the ruler though because sometimes it's not clear what your pointing to

[@martindekker8203]

You would only have the earth to neutral link attached on your main board though. Not on any sub boards. correct?

[@Mike-me3sp]

I'm doing a generator connection to my house, and as I'm sure you know the neutral now also goes through the changeover switch (been a few years since I've done one). The question is, do I need a earth-neutral connection at the generator inlet as I'll obviously be losing the men connection when switched over to the generator?

[@ifell3]

Should the MEN link be thick, least resistance or thinner making a higher resistance? I'm thinking thicker so the current can pass through quicker and the resistance of the other metals in the housing will allow for that 5 or 10 ms delay. Am I correct?

[@stonedsloth6367]

that depends on on the wiring rules. A dummy value is having it the same csa as the neutral conductor, but there are variations to consider in varying the size. theres also a rule stating a conductive enclosure needs bonding equivalent to that of the neutral conductor. Imagine seeing a 16mm2 bond on a domestic board wtf hahah. But like i said there are variations to factor in that can either increase that size or decrease.

[@petergolias7265]

Thank you So much Sir .

[@zhaobingma8240]

MEN= Multiple Earthed Neutral. Refer AS3000/2007 clause 1.4.66

[@damonjenkins2185]

Should be using as3000 2018

[@genesismarsh-potini4153]

Why is it “multiple” why can you only have one

[@johnnyambi550]

During earth fault condition if nuetral is connected to earthing bar would the current not be of shock harzad

[@_Zen_Clips_]

does the MEN link take the risk of Earth leakage away or lowers it?

[@electricaltafetheory2197]

Lowers it

[@tahaali3603]

thanks alot

[@donnelly.1969]

if the MEN Link is missing is it a serious problem

[@xdrcx]

There's a few things I'm missing here. Why doesnt a little/all current flow from the neutral bar through MEN link to ground? I was under the impression this path is super low resistance. Also where does current go once going to the mass of the earth? Does this diagram show it going back up the power pole?

[@timg6850]

The reason the Neutral and Earth wires are connected together via the MEN link is : 1) To make the sure the Neutral is at the same Potential as the Earth Stake in the Physical Earth (0 Volts). 2) To create a path of low resistance for Fault current via the Neutral to the Transformer so a large enough current will flow to trip the Circuit breaker. In normal operations little to no current flows through the Physical Earth as the resistance of the Physical Earth is very high.

[@allanbolton606]

Nice

[@Mike-me3sp]

Only one complaint; please use something pointier as a pointer 😁

[@damonjenkins2185]

I believe traditional earthing is made redundant by MEN

[@stonedsloth6367]

its just there as a fail safe.

[@David-lr2vi]

Traditional earthing via an earth stake is there to protect the electrical installation (wiring etc) from lightning, not for protecting appliances and people. If protecting appliances and people is all that is required then a path to earth isn’t strictly necessary, although it does provide some redundancy in case of high resistance or open circuit on the neutral. Electric current will always try and return to where it came from, if it came from the pole transformer it will try and return to the pole transformer (through the neutral wire or the earth stake if there isn’t a path back through the neutral). If it came from the ground (lightning) it will try and return to the ground.

[@petergolias7265]

When using RCBO for final sub-circuits, do we connect M.E.N in the sub-board?

[@brianfirth5435]

You know the subject obviously. But what a lot of waffle, not very well delivered.

[@aaronr5555]

Ummm m.e.n doesn’t stand for main earth neutral 🤪