Putting in seperate 1 way boards. Pod Points

[MrTrance]

Hi all,

I work for a firm who are getting busy with the solar pv and will soon be getting busy with the pod point installation (ev charging domestic).

My gaffer (who is not an electrician) wants a new 1 way board putting in on every job, no questions asked. Even if the existing board is 17th edition with spare ways. Every job I get a henley block and a few meter of tails & earth. I go to every job blind and as you all know, no job is the same.

For example whats the best way of putting in a sub board if the meter is in its box outside and fuseboard is opposite at high level in a very nice kitchen on show. How on earth can I get to the tails which are in the cavity, what would you all do? Also it means pulling the main cut out fuse which i'm sure is illegal?

Also do any of you lot install these pod points, Iv heard different opinions on how they need protecting, is it with a D type mcb? Any info on the pod points would be useful. We will be installation them pretty soon.

Many thanks

 

[Forty4]

If the existing DB has a spare way take your supply to the new DB from there.

 

[Maddison]

Obviously didn't read the post ^^^^^

 

[SJD]

My gaffer (who is not an electrician) wants a new 1 way board putting in on every job, no questions asked. Even if the existing board is 17th edition with spare ways. Every job I get a henley block and a few meter of tails & earth.

From a business perspective, I can sort of see the logic, no need to even look at the existing board(s) or worry about having the right brand of MCB etc., you just carry the Henleys and the tails. Even if in a lot of cases it will be a bit of a daft way to do it. You might want to check with your gaffer if you're expected to put the sub-board in the meter box in the example you mention.

 

[Octopus]

I wager a large bet you don't install equipotential bonding if there isn't any.

 

[R G]

The other thing is if a dual RCD board is fitted or RCD main switch , and no way of installing without RCD protection , If RCD trips for any reason within the house there would still be a feed from the solar panel set up to the circuits fed by the RCD

 

[Des 56]

Take an isolator with you (along with his other bits of junk)there should be enough on the tails to fit this isolator and it will peserve one means of isolation

Feed your 1-way board and existing from the Henley blocks which are fed by that isolator,then let any concerns about permission to use that box (to fit your gear) lie with the plonker who makes these demands

 

[shanky887614]

The other thing is if a dual RCD board is fitted or RCD main switch , and no way of installing without RCD protection , If RCD trips for any reason within the house there would still be a feed from the solar panel set up to the circuits fed by the RCD

Wrong.

If there is no voltage on the ac side the inverter will power off and no power will flow from inverter to ccu

 

[R G]

Wrong.

If there is no voltage on the ac side the inverter will power off and no power will flow from inverter to ccu

This situation arose on A job I did and it did still give a supply I was there when it happened,,,I spoke to the company that installed it and yes it was supposed to do that but was faulty, they went back and replaced it though , but still a s the guy said this can happen ,,,,,So Right

 

[shanky887614]

This situation arose on A job I did and it did still give a supply I was there when it happened,,,I spoke to the company that installed it and yes it was supposed to do that but was faulty, they went back and replaced it though , but still a s the guy said this can happen ,,,,,So Right

Of course it can happen the same as the contacts can weld themselfs open on an mcb or mainswitch

Personally I wouldn't expect it on a quality inverter from a goodbrand.

If the inverter is designed to still output when the grid is offline then a changeover switch or similar would be needed

Otherwise it should not be connected to the grid as it wont receive fit rate anyway as it doesnt meet the necessary standards

 

[R G]

I was surprised myself as well , the system had been in few years , The guy said its happened a few times , and would recommend they are installed on its own in a high integrity board separate from the RCDs or on its own board , the new one he installed i noticed that was still connected the same way gave out of range readings on the RCD test , to get good readings I had to switch of the MCB to the solar system .

 

[MrTrance]

Am I allowed to put my equipment in the existing meter cupboard? Any yes I do check the bonding to water / gas and install if needs be.

 

[netblindpaul]

Wrong.

If there is no voltage on the ac side the inverter will power off and no power will flow from inverter to ccu

Yes it will, but, it is allowed to generate for 5 seconds after loss of mains.
Too long if the RCD trips because someone is having a shock, in fact long enough to kill them.
Not a situation I would put myself in.

 

[R G]

Yes it will, but, it is allowed to generate for 5 seconds after loss of mains.
Too long if the RCD trips because someone is having a shock, in fact long enough to kill them.
Not a situation I would put myself in.

Exactly what you find with Rcds in use

 

[shanky887614]

Yes it will, but, it is allowed to generate for 5 seconds after loss of mains.
Too long if the RCD trips because someone is having a shock, in fact long enough to kill them.
Not a situation I would put myself in.

Wouldnt matter then would it.

Or do you put rcd local to inverter as well?

Ac or alternating current would still flow through them until the inverter shuts off if what you are saying is true.


Otherwise why would they have banned fuse neutrels in domestic for example?

Why don't you use swa for the ac side then?