Building a Tiny House

phuketrichard · Post by **phuketrichard** » Sat Jan 02, 2021 5:43 pm

a bit off topic but electricity related>

the house we brought, the owners took the meter with them.
so need buy a new meter, am told they come in 10, 20, 30 amp
What should I get?

Plan 1 9000 btu air con, ( bedroom is 4x5 so 9000 should be plenty) and the regular stuff, tv, washing machine, hot water heater, lights, micro wave, toaster oven
Thanks

timmydownawell · Post by **timmydownawell** » Sat Jan 02, 2021 5:50 pm

phuketrichard wrote: ↑Sat Jan 02, 2021 5:43 pm a bit off topic but electricity related>

the house we brought, the owners took the meter with them.
so need buy a new meter, am told they come in 10, 20, 30 amp
What should I get?

Plan 1 9000 btu air con, ( bedroom is 4x5 so 9000 should be plenty) and the regular stuff, tv, washing machine, hot water heater, lights, micro wave, toaster oven
Thanks

What's the Main Circuit breaker in the house rated at? That should be the amperage it had previously. My place had 6A lol, I upgraded to 63A but EDC were reluctant to go that high. And it cost a fair whack (~$400) but it's cheaper for a lesser connection. Also paid $75 for new cable. If you let them supply the cable you'll get ripped off.

So get the 30A, but you might need to upgrade the power cable to the house, and the main breaker, if it had a lesser supply before.

phuketrichard · Post by **phuketrichard** » Sat Jan 02, 2021 6:03 pm

I'd love to be able to tell ya BUT<
i brought the land/house in Sept and with luck might see it in May

I'll look than

AndyKK · Post by **AndyKK** » Sat Jan 02, 2021 9:33 pm

Quote - there's no system in Cambodia for EDC to pay you for power you feed in. "Off grid system" can still be connected to the grid, but doesn't feed in to grid.
I remember sometime back when a Chinese factory owner asking if he could go solar, mainly because of the power cuts, then obviously it's tool's down stop work. He I seem to remember asking HE to intervene, HE replied it not really being his business to do so, but the outcome was the owner would set up the system, cost $1million, but the electric company would loss the money he would have paid for the electric per month. I think the outcome was the owner could go on solar at his own expense but still pay half of what his monthly bill would have been to EDC.

khmerhamster · Post by **khmerhamster** » Sat Jan 02, 2021 10:13 pm

AndyKK wrote: ↑Sat Jan 02, 2021 9:33 pm Quote - there's no system in Cambodia for EDC to pay you for power you feed in. "Off grid system" can still be connected to the grid, but doesn't feed in to grid.
I remember sometime back when a Chinese factory owner asking if he could go solar, mainly because of the power cuts, then obviously it's tool's down stop work. He I seem to remember asking HE to intervene, HE replied it not really being his business to do so, but the outcome was the owner would set up the system, cost $1million, but the electric company would loss the money he would have paid for the electric per month. I think the outcome was the owner could go on solar at his own expense but still pay half of what his monthly bill would have been to EDC.

I don’t understand this at all. Why would they need to get permission? My office uses 75% of its power sourced from solar. I didn’t tell EDC, I just started using less mains power once installed.

Bitte_Kein_Lexus · Post by **Bitte_Kein_Lexus** » Sun Jan 03, 2021 7:57 am

khmerhamster wrote:
AndyKK wrote: ↑Sat Jan 02, 2021 9:33 pm Quote - there's no system in Cambodia for EDC to pay you for power you feed in. "Off grid system" can still be connected to the grid, but doesn't feed in to grid.
I remember sometime back when a Chinese factory owner asking if he could go solar, mainly because of the power cuts, then obviously it's tool's down stop work. He I seem to remember asking HE to intervene, HE replied it not really being his business to do so, but the outcome was the owner would set up the system, cost $1million, but the electric company would loss the money he would have paid for the electric per month. I think the outcome was the owner could go on solar at his own expense but still pay half of what his monthly bill would have been to EDC.
I don’t understand this at all. Why would they need to get permission? My office uses 75% of its power sourced from solar. I didn’t tell EDC, I just started using less mains power once installed.

He's talking about selling back to grid (from your excess solar), not actually just going solar. ISPP ran into the same dilemma several years ago. It looked positive for a while and I thought they'd be the first to do it, but I don't think the outcome was successful. They still have a ton of panels on their roofs though.

khmerhamster · Post by **khmerhamster** » Sun Jan 03, 2021 8:07 am

Bitte_Kein_Lexus wrote: ↑Sun Jan 03, 2021 7:57 am
khmerhamster wrote:
AndyKK wrote: ↑Sat Jan 02, 2021 9:33 pm Quote - there's no system in Cambodia for EDC to pay you for power you feed in. "Off grid system" can still be connected to the grid, but doesn't feed in to grid.
I remember sometime back when a Chinese factory owner asking if he could go solar, mainly because of the power cuts, then obviously it's tool's down stop work. He I seem to remember asking HE to intervene, HE replied it not really being his business to do so, but the outcome was the owner would set up the system, cost $1million, but the electric company would loss the money he would have paid for the electric per month. I think the outcome was the owner could go on solar at his own expense but still pay half of what his monthly bill would have been to EDC.
I don’t understand this at all. Why would they need to get permission? My office uses 75% of its power sourced from solar. I didn’t tell EDC, I just started using less mains power once installed.
He's talking about selling back to grid (from your excess solar), not actually just going solar. ISPP ran into the same dilemma several years ago. It looked positive for a while and I thought they'd be the first to do it, but I don't think the outcome was successful. They still have a ton of panels on their roofs though.

Oh right. That wasnt clear to me at all.

In my office system EDC gets the benefit of my unused power for free. But i only now pay them about 20 dollars a month, down from 150-200.

It means that you need to be thoughful about your expected usage when designing your system size. Or else someone will get massive benefit at your initial expense.

Bitte_Kein_Lexus · Post by **Bitte_Kein_Lexus** » Sun Jan 03, 2021 9:23 am

I think you're still misunderstanding. No one gets a benefit, as it's not possible to just give it back to the grid. EDC simply isn't equipped for it, so whatever excess you have just disappears. You get a 2000r bill (minimum to keep it up), and EDC gets nothing (I mean, they don't magically get your excess and sell it for a profit). Though I guess it lightens general electricity consumption, which is good for EDC/people in general. So there's no point measuring it out exactly so that you're "flush".

How many panels does your company have? Do you happen to know who did your system and what wattage it's at?

khmerhamster · Post by **khmerhamster** » Sun Jan 03, 2021 9:53 am

Bitte_Kein_Lexus wrote:I think you're still misunderstanding. No one gets a benefit, as it's not possible to just give it back to the grid. EDC simply isn't equipped for it, so whatever excess you have just disappears. You get a 2000r bill (minimum to keep it up), and EDC gets nothing (I mean, they don't magically get your excess and sell it for a profit). Though I guess it lightens general electricity consumption, which is good for EDC/people in general. So there's no point measuring it out exactly so that you're "flush".

How many panels does your company have? Do you happen to know who did your system and what wattage it's at?

That's not what the installation company explained to me.

Any excess we generate flows back to the grid. What they aren't equipped to do is to compensate us for it.
They said that some of the older meters will run backwards when we are 'feeding' the grid. But officially they shouldn't do this. I don't think I misunderstood...but have been wrong before!

I used nrg renewables. But sorry I can't remember the number of panels. Its a 4kW system AFAIR

Bitte_Kein_Lexus · Post by **Bitte_Kein_Lexus** » Sun Jan 03, 2021 10:20 am

Cool! I'm probably mistaken then. Would be the very Cambodian thing to do (allow it, but conveniently not compensate people who actively contribute energy to the grid, despite energy shortages). I know NGR, they seem like a good company and quite professional, though I've never dealt with them personally (I've met some of their staff).

4kw is pretty big, but it obviously gives great energy savings. I've heard it still takes 10+ years to recoup costs )at which point new batteries are needed), but I like the idea of energy semi-independemce, plus coats are always going down.

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