Electrical advice-30A circuits

Nope, There is just a single phase primary coming down the road, The other 2 phases will go down different paths to other transformers.

We have s*it to do ;-) A dryer cycle for a full load is about 45 minutes but it has a sensor that adjusts as the load gets dry and may run longer or shorter, depending on how it is doing

That is why I said it is just AC speak. They do use a rough guide of 500 sq/ft to the ton but that is just a sanity check. They are supposed to do a calculation based on the insulation, number and size of windows, doors etc and "degree days" (an estimation of the weather at that location). Too big is as bad as too small.

Your up and running comment suggests that the load drops after you first turn the stove/oven on. Think about that a moment, Trader.

You're not talking about an AC compressor or a large table saw, etc. Your electric stove is a resistance load and that will be constant unlike the startup load of a motor. Granted, to come close to drawing the circuit rated 50 AMPS, you'd need to have all the burners turned on and the oven in preheat mode (assuming yours uses both the broiler and oven element to do so).

Hang on, why was BTU mentioned? That's an archaic British unit. America uses this?

On Wed, 01 Feb 2017 02:40:09 -0000, Uncle Monster w= rote:

ote:

our outlets (or half of them, on two circuits) on a 30A breaker. Each a= ppliance has a fuse in the plug, dependant on what that appliance is.

arger homes) 30A 240V circuit(s) for outlets, one 30A 240V circuit for t= he cooker, one 15A 240V circuit for the water heater, and two 5A 240V ci= rcuits for lighting.

I can exceed that by a factor of 2.5 with my cooker alone. The shower = another factor of 2 over that.

they're using smaller wire(less copper) to get the same wattage at twice= the voltage. I find it interesting that their transformers must be heav= ier because of the lower frequency of their power systems. Which make me= wonder why Europe settled on a 50hz standard? Off I go to do some resea= rch. =E3=83=BD(=E3=83=85)=E3=83=8E

lot smaller with much higher frequencies though - look inside a compute= r power supply.

formers are very small. =E3=83=BD(=E3=83=85)=E3=83=8E

Yes, but we're talking about the difference between 50 and 60 Hz.

-- =

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On Wed, 01 Feb 2017 03:28:42 -0000, Uncle Monster w= rote:

e:

fair number with double width cookers (two ovens, six hobs).

I can exceed that by a factor of 2.5 with my cooker alone. The shower = another factor of 2 over that.

ven get three phase.

power. The large AC units ran on 3 phase power which I believe is becau= se larger AC units were not available at the time that ran on single pha= se power.

r but by TVA. In the early 1980's, I did some work in the rural area of = Cullman County around Smith Lake and the power lines in the area consist= ed of a single high voltage line connected to one side of a transformer = and a ground rod connected to the other side of the transformer. I don't= recall the kv on the power line but the power from the transformer was = standard single phase 240vac. It's the only place I've seen a power dist= ribution system like that. =E3=83=BD(=E3=83=85)=E3=83=8E

Three phase is on the national grid. Supplying only one phase off that = would be lop-sided. That's why all three phases come right to every tra= nsformer in the UK, then alternate houses are connected to each phase.

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HELP WANTED: Baiters. Local fishing boats need 4 baiters to bate hooks for tourists. = Must have strong hands and work hard. Good pay-$15 per hour, and benef= its. After 6 weeks, 2 best baiters will be promoted to masterbaiters. Apply = in person to Jon at the Gulf Marina.

If you only fed on street that might be a problem but they alternate the load by distributing the 3 phases along roughly equal loads on multiple streets. It basically just saves them wire. The neutral will be going everywhere, common from primary and secondary and a single phase conductor on the primary. We use wye distribution here. We also end up with more transformers than you see in europe. There is a transformer for every 1-3 houses. That probably got started when houses were pretty far apart and it was more efficient to distribute medium voltage than to try to go very far with low voltage.

No more "nonsensical" than BTUs.

Yes I am.

"AC breaker is 50A , probably only pulls half that when it up and running."

I meant central AC, not AC in the voltage sense, since that's implied. But I see how it could be confusing.

That way should use less cable, instead of our way of having all three phases everywhere. Should be easy enough to add new houses onto whatever is appropriate.

Mind you, the transformer across the road from me takes all three phases in, and gives three out. I thought this was more efficient, but I'm not sure.

But you don't need to wait for it. I assume you have more than one set of clothes? It wouldn't matter if it took all day to dry!

No more, less. "hemo-" means blood (unlike "astro-" meaning star).

BTU:

I suppose, if you only do one load a day but I think they try to make the wash and dry cycle as close to the same time as possible. People with lots of kids may be doing several loads a day and it is easiest if you make fewer trips to the laundry.

I guess it depends on the topological distribution of houses. More transformers, more wire, more current losses, you have to pick something.

On Wed, 01 Feb 2017 18:26:52 -0000, Uncle Monster w= rote:

rote:

rote:

a fair number with double width cookers (two ovens, six hobs).

?! I can exceed that by a factor of 2.5 with my cooker alone. The show= er another factor of 2 over that.

n even get three phase.

ase power. The large AC units ran on 3 phase power which I believe is be= cause larger AC units were not available at the time that ran on single = phase power.

ower but by TVA. In the early 1980's, I did some work in the rural area = of Cullman County around Smith Lake and the power lines in the area cons= isted of a single high voltage line connected to one side of a transform= er and a ground rod connected to the other side of the transformer. I do= n't recall the kv on the power line but the power from the transformer w= as standard single phase 240vac. It's the only place I've seen a power d= istribution system like that. =E3=83=BD(=E3=83=85)=E3=83=8E

at would be lop-sided. That's why all three phases come right to every = transformer in the UK, then alternate houses are connected to each phase= .

y populated rural areas. I don't think you realize the difference in siz= e of The United States and The UK. The UK is 241,590 sq km in land area = and The U.S. is

er company is going to run power everywhere in the most economical manne= r. It would be absurd to run 3 phase power in a sparsely populated area = where homes/farms/ranches are miles apart. The family farm that I own on= e ninth of has a 1/4 mile long driveway but It's been so long since I've= been there that I don't recall what the power lines looked like. I'm gu= essing there is a transformer down the mountain on the road to supply po= wer to the homes that are relatively close together. One neighbor has a = home across the road from the driveway entrance for my family farm and I= suppose it's connected to the same transformer. I think my father had t= o pay the power company to set power poles and run lines up the mountain= side to our home but it's been more than a half century since the house = was built and my family moved there from a small town. =E3=83=BD(=E3=83=85= )=E3=83=8E

That makes sense.

-- =

What is the punishment for bigamy? Two mother-in-laws.

Usually atleast 2 a day. ONe for the whites and another for the color. Often bleach is added to the whites.

No, for power it's the kWh. We don't use BTUs in the UK anymore.

Calories are only for your body.

Do you change all your clothes every 2 hours or something? You're insane. When I was a kid (a family of 4), the washing machine was used twice a week.