mufutau55:


That is what my Electrician recommended. One for downstairs and one for upstairs, I guess to separate the load..
It's a big duplex, so I agreed to it. I don't know much about electricity in Naija o.

Hajji M.

twinskenny:

some places self we can use 4 for a duplex depending on how big the duplex is ... i know i will get bash for this lol

sometime you want to seperate inverter/solar load from AC/WATER HEAVY STUFF from inverter.. good to have smaller d4 single phase by the side of the big D8/D6...

twinskenny:

some places self we can use 4 for a duplex depending on how big the duplex is ... i know i will get bash for this lol

sometime you want to seperate inverter/solar load from AC/WATER HEAVY STUFF from inverter.. good to have smaller d4 single phase by the side of the big D8/D6...

Flashmove:
Hello all

I need a sample sketch of 4 story double flat each three rooms and parlour . The land is 50 by 50 .

and i will need a contractor that will over see it.....

Flashmove:


Can you make this a flat roof desgin . make any example choice with the attached pic, let me know if i can hire you for a job....

Flashmove:
Hello all

I need a sample sketch of 4 story double flat each three rooms and parlour . The land is 50 by 50 .

and i will need a contractor that will over see it.....

twinskenny:

some places self we can use 4 for a duplex depending on how big the duplex is ... i know i will get bash for this lol

sometime you want to seperate inverter/solar load from AC/WATER HEAVY STUFF from inverter.. good to have smaller d4 single phase by the side of the big D8/D6...

jabolo:


I used 3 DBs in mine for this reason. D8 + D6 to share the load on different sides of the building then a separate D4 for load that can be served by an inverter. All 3 phase though.


So, when Allcopacetic returns to village this christmas, even the Igwe must come collect!

topsy23:


You are right by separating the clean power from the raw power. some residential buildings and some offices use the same distribution board for raw power and inverter ...

After series of testing and other rigorous troubleshooting, we discovered that there was heavy backfield from inverter equipment to changeover and generator. This has caused them to change their generator before they contacted us cos it has damaged so many including their generator. Thank God we corrected everything and they are enjoying the power supply till date.

jabolo:


Did you test for harmonics? This is what a sub-optimal inverter spews out into the electrical system in several directions and no amount of DB separation can offer protection to sensitive equpment (i presume their old generator suffered stator inter-winding overheat and/or damage to its own control circuitry) without a harmonic filter in place.

If you did not replace the inverter, or install harmonic filters, I suspect you just got lucky with a replacement generator with inbuilt resilience but you're still sending that stuff out to the distribution network accumulating problems elsewhere resulting in system outages. There should be standards for inverters allowed to be installed in our homes and we should not allow any cheap stuff just to be imported.

jabolo:


Did you test for harmonics? This is what a sub-optimal inverter spews out into the electrical system in several directions and no amount of DB separation can offer protection to sensitive equpment (i presume their old generator suffered stator inter-winding overheat and/or damage to its own control circuitry) without a harmonic filter in place.

If you did not replace the inverter, or install harmonic filters, I suspect you just got lucky with a replacement generator with inbuilt resilience but you're still sending that stuff out to the distribution network accumulating problems elsewhere resulting in system outages. There should be standards for inverters allowed to be installed in our homes and we should not allow any cheap stuff just to be imported.

Daboomb:


Serious Stuff!
On the other hand, will it not be cheaper to install filters and frequency stabilizers within the circuitry, instead of shopping for very xpensive and maybe not readily available Inverters that would suit those conditions?
Just wondering.

topsy23:


The total connection was wrong initially, All the lighting and socket outlet connected to inverter shared the same neutral with PHCN /Generator instead of running a separate neutral cable from inverter equipment to a separate neutral bar on the inverter. Whenever there is power outage from PHCN , all the loads connected to inverter will shut down even the inverter breaker will trip off. During the investigation and troubleshooting, we discovered that there is backfield in the main changeover switch and generator breaker when the inverter is working only. The inverter model is XANTREX from US one of the most expensive inverter in the market.

jabolo:


Ah, I see. A crazeman posing as an electrician was originally employed.

jabolo:


It is really not that serious in the grand scheme of things, just one other bothersome thing to consider by operators already trying to keep a weak system afloat.

So, would you not rather tell a noise maker to keep quiet than distribute ear muffs to all the other kids in a classroom as a comparable example?

If the inverters are properly designed in the first place you shouldn't have harmonic related problems in the system, at least not beyond the acceptable tolerances.

topsy23:


You are right by separating the clean power from the raw power. some residential buildings and some offices use the same distribution board for raw power and inverter. We recently called by a South African company in Victoria Island for a power audit, they have been having issues with their power for over months. We carried out the following test:
-Insulation resistance test
-Continuity Test
-Earth Leakage test

After series of testing and other rigorous troubleshooting, we discovered that there was heavy backfield from inverter equipment to changeover and generator. This has caused them to change their generator before they contacted us cos it has damaged so many including their generator. Thank God we corrected everything and they are enjoying the power supply till date.

jabolo:


Ah, I see. A crazeman posing as an electrician was originally employed.

Truthinlife:
My people,
It is now time to tile. I believe we’v come across different topics/links on tile products both local and foreign( I can’t find them). I need suggestions/links on the [b]most inexpensive, durable and beautiful tiles [/b]for (floors) Living room, hallway, rooms, Kitchen and finally bathroom walls/floor. Pictures will be appreciated as well. I’m a fan of glossy/shiny tiles but welcomes all advice. Project is in the East. Thank you.

Daboomb:


If you are going for 'not-so-expensive' Tiles , dont use very shiny types for the living room.
There traffic of feet will make it lose that shine so quickly it will be obvious you used a 'not-so-expensive' tile!
Use those that are not shiny for your living room and use a bright color (preferably white with some light ash).
Thanks bro,
“Write2obi” where are you based on the east and your contact.

use mostly non-primary colours that are brighgt, they give an air of 'space' and cleanliness.
Use large Tiles as much as possible (60x60), they are faster & cheaper to install and have fewer joint-lines, which makes them more appealing when installed

CDK Tiles is Nigerian made and not doing very bad. Sold in Lagos, dont know if they sell it in the East.

I am not a Tiler or a Contractor, l am just speaking from my own experiences, of my personal builds.

write2obi:

I'm glad you are loving your tiles chief, we've come a long way in tiles production, gone are the day when local manufacturers are scared to put their logo and "made in Nigeria" at the rear and pack of their tiles. CDK Ceramics and West African Ceramics are really setting the pace and Time Ceramics and Goodwill Ceramics are not far behind.

A Nairalander was at my office last week looking for white porcelain Spanish or Italian tiles, i showed him our samples and their prices, he needed about 1800+sqms, so as expected the money involved was huge, he said he'll need to leave the tile purchase until his next visit to Nigeria due to the funds involved.
Then i asked him a question ; why Spanish or Italian? Why not Nigerian? . He scoffed at my mention of Nigerian tiles.
Then asked him if he'll like me to show him made in Nigeria white porcelain tiles, just to see not touch or buy . He said ok, then i showed him the samples and.
He was so impressed and decided to go with Nigerian tiles and saving alot of money. Local manufacturers are uping their games and the competition is becoming more and more intense both price wise.

ubox:

Proposal for the flat roof facade.
Day and night views attached

https://www.nairaland.com/3696405/contemporary-moderate-building-designs#54818903

Truthinlife:

Where are you based in the east and your contact. Want to check out and buy the CDK ltiles.

KingMicky3286:


Its really nice, you got the picture of what is obtainable. I think, putting railing on the top and the flower will blend with the garden light .

example pic attached