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Search: Posts Made By: ICanHas
Forum: Solar Power 09-02-14, 02:24 AM
Replies: 15
Views: 5,203
Posted By ICanHas
At 240v and you size according to code (NEC in...

At 240v and you size according to code (NEC in the US) for safety and voltage drop for the given current level, it should be fine.

ANSI standards allow +/- 5% steady state voltage at the service...
Forum: Tools 09-02-14, 02:20 AM
Replies: 14
Views: 4,078
Posted By ICanHas
Never said it would be a "car type" alternator....

Never said it would be a "car type" alternator. :rolleyes: which would do a HORRIBLE job in the primary role of motoring from a single phase supply.
Forum: Appliances & Gadgets 09-02-14, 02:06 AM
Replies: 5
Views: 2,264
Posted By ICanHas
Read first, then post. Post #3 clearly addresses...

Read first, then post. Post #3 clearly addresses that.

1.) The GE meter shown in the aforementioned post is a certified revenue grade meter. It has the ability to log the amount of energy passed...
Forum: Appliances & Gadgets 09-01-14, 10:47 PM
Replies: 5
Views: 2,264
Posted By ICanHas
It will work perfectly with heat pump. Read...

It will work perfectly with heat pump. Read first, then post. I never advocated for kWh estimation of heat pump, but a duty cycle measurement in those applications.

It will accurately measure...
Forum: Solar Power 09-01-14, 10:35 PM
Replies: 15
Views: 5,203
Posted By ICanHas
What kind of A/C? Size and tonnage? Code...

What kind of A/C? Size and tonnage?

Code permitting, I would go for doubly fed setup if your run is that long. The wire numbers are completely made up, but the setup on right is more desirable:...
Forum: Tools 09-01-14, 09:54 PM
Replies: 14
Views: 4,078
Posted By ICanHas
It would need to be protected from dust, just...

It would need to be protected from dust, just like timing on cars.

I would consider hydrostatic drive so you can modify the compressor speed. It also makes it substantially easier to start by...
Forum: Appliances & Gadgets 09-01-14, 09:30 PM
Replies: 5
Views: 2,264
Posted By ICanHas
Low cost DIY AC/fridge duty cycle and dryer and water heater kWh estimator

This novel idea uses simple household devices within easy reach of students, hobbyists and conservation enthusiasts to accurately collect the average run-time percentage of refrigeration or air...
Forum: Appliances & Gadgets 09-01-14, 08:45 PM
Replies: 11
Views: 5,238
Posted By ICanHas
So I hit a road block. The dryer is not a pure...

So I hit a road block.
The dryer is not a pure 240v load. It's a three wire machine with the motor running line to neutral.
Forum: Tools 09-01-14, 08:30 PM
Replies: 14
Views: 4,078
Posted By ICanHas
Modify it to use chain or timing belt like geared...

Modify it to use chain or timing belt like geared belt like used in some vacuum cleaners, bicycles and motor cycles.

It is a lot easier on bearings and parasitic losses will be quite a bit lower....
Forum: Solar Power 09-01-14, 07:03 PM
Replies: 15
Views: 5,203
Posted By ICanHas
Wire is rated in amps for safety reasons. As long...

Wire is rated in amps for safety reasons. As long as you stay under this limit, the sizing is all dependent on voltage and length.

The same wire drops the same volts per amp per length.

A...
Forum: Appliances & Gadgets 09-01-14, 06:47 PM
Replies: 18
Views: 2,779
Posted By ICanHas
It's a line pollution control to clean up the...

It's a line pollution control to clean up the pollution caused by highly polluting power electronics loads. LC filters are good. It would be the most effective combined with facility level...
Forum: Appliances & Gadgets 09-01-14, 04:10 AM
Replies: 18
Views: 2,779
Posted By ICanHas
Query for mejunkhound

Big, heavy and lossy in some applications, but I believe these words are used to discredit passive components as outdated to present power electronics as being all around better no compromise...
Forum: Geothermal & Heat Pumps 08-31-14, 11:24 PM
Replies: 51
Views: 8,197
Posted By ICanHas
And relay requires holding current and it's an...

And relay requires holding current and it's an added cost and complexity.

Does switching to two diode from bridge at low load reduce load as measured at primary side of distribution transformer...
Forum: Geothermal & Heat Pumps 08-31-14, 10:37 PM
Replies: 51
Views: 8,197
Posted By ICanHas
Who's transformer are you talking about anyways? ...

Who's transformer are you talking about anyways?

If there's an effective load side harmonic mitigation like used in lighting ballasts, you don't have much reaching the transformer. Harmonics DO...
Forum: Appliances & Gadgets 08-31-14, 10:09 PM
Replies: 11
Views: 5,238
Posted By ICanHas
Don't forget the indirect losses. Dryer is...

Don't forget the indirect losses. Dryer is similar to a single vent portable A/C. There's been some laboratory testing done on portable ACs and many have been found to have a negative efficiency when...
Forum: Geothermal & Heat Pumps 08-31-14, 08:10 PM
Replies: 51
Views: 8,197
Posted By ICanHas
What makes you think that in 2014, the cost of...

What makes you think that in 2014, the cost of providing service per revenue dollar isn't higher in rural than high density commercial? If it was privatized, the monthly charge would be...
Forum: Geothermal & Heat Pumps 08-31-14, 05:49 PM
Replies: 51
Views: 8,197
Posted By ICanHas
It would be much more cheaper and preferable for...

It would be much more cheaper and preferable for energy providers(and other rate payers) to make these changes. Rural customers are especially a HUGE burden. They'd much rather make it be like a...
Forum: Geothermal & Heat Pumps 08-31-14, 08:36 AM
Replies: 51
Views: 8,197
Posted By ICanHas
Neighborhoods frequently don't even have 3 phase...

Neighborhoods frequently don't even have 3 phase power or transformers coming to them. Many of those transformers are SINGLE PHASE 7,200 V medium voltage to 120/240 LOW voltage.

Well, you and...
Forum: Appliances & Gadgets 08-31-14, 07:57 AM
Replies: 14
Views: 2,647
Posted By ICanHas
It is disagreed by a credible source. ...

It is disagreed by a credible source.
https://www.osha.gov/dts/osta/otm/legionnaires/faq.html
Forum: Geothermal & Heat Pumps 08-30-14, 11:39 PM
Replies: 51
Views: 8,197
Posted By ICanHas
Proprietary distribution is unpractical without a...

Proprietary distribution is unpractical without a large consumer of this service.

Nuthin' innovative about private DC network. 600-750V LVDC is used all over the place for internal consumption...
Forum: Appliances & Gadgets 08-30-14, 11:30 PM
Replies: 14
Views: 2,647
Posted By ICanHas
Set point has to be hotter than utilization...

Set point has to be hotter than utilization temperature unless the design is such that water can be drawn without cold water going into it, because the added water will diffuse with the existing hot...
Forum: Wind Power 08-30-14, 11:13 PM
Replies: 7
Views: 3,644
Posted By ICanHas
What you're describing is a pneumatic machine....

What you're describing is a pneumatic machine. Industrial size compressors can get over 90% motor efficiency, but the kW power at shaft of pneumatic tools over kW work going into compressor is...
Forum: Geothermal & Heat Pumps 08-30-14, 09:05 PM
Replies: 51
Views: 8,197
Posted By ICanHas
But we're not talking about it in specific...

But we're not talking about it in specific end-user industry. Data centre would be so called medium voltage customer with customer owned distribution equipment.

Purpose specific centralized DC...
Forum: Appliances & Gadgets 08-30-14, 05:39 PM
Replies: 14
Views: 2,647
Posted By ICanHas
Well, 115-120F is pretty much the lower limit...

Well, 115-120F is pretty much the lower limit from practical sense so you have warm enough water for usage. Residential water heaters are designed for upper bound of 150F.

So, all that controller...
Forum: Geothermal & Heat Pumps 08-30-14, 05:28 PM
Replies: 51
Views: 8,197
Posted By ICanHas
I wasn't blaming them for that. They're not...

I wasn't blaming them for that. They're not "load". I am referring to electronic loads, like variable speed motor drives which is often called "inverter drive". You're thinking of the wrong inverter,...
Showing results 1 to 25 of 150

 
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