208V 1phase loads

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Dennis Alwon said:
Perhaps I am wrong but I agree with Bill

If 6 heaters are distributed evenly then that means each phase has 4- 1500 watt loads. 4 * 1500 = 6000 . 6000/120= 50 AMPS. Also 18000/360= 50

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Must be early in the AM because this doesn't seem correct to me.:roll:

Let's say there's 3 heaters instead of six. That would be equivalent to one 208 volt, 3 phase load of 3 KW. Current would equal 3000/208/1.73=8.33 amps.

Now with six heaters connected you could double the current so you would end up 8.33 * 2 = 16.66 amps.

Where am I going wrong?
 
infinity said:
Must be early in the AM because this doesn't seem correct to me.:roll:

Let's say there's 3 heaters instead of six. That would be equivalent to one 208 volt, 3 phase load of 3 KW. Current would equal 3000/208/1.73=8.33 amps.

Now with six heaters connected you could double the current so you would end up 8.33 * 2 = 16.66 amps.

Where am I going wrong?
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The bit in bold.
Note that the OP states that each heating load is 3 kVA.
 
infinity said:
Must be early in the AM because this doesn't seem correct to me.:roll:

Let's say there's 3 heaters instead of six. That would be equivalent to one 208 volt, 3 phase load of 3 KW. Current would equal 3000/208/1.73=8.33 amps.

Now with six heaters connected you could double the current so you would end up 8.33 * 2 = 16.66 amps.

Where am I going wrong?
Click to expand...

3 at 3 kw ea = 9kw on 208 3 phase, 25 amps
 
infinity said:
Must be early in the AM because this doesn't seem correct to me.:roll:

Let's say there's 3 heaters instead of six. That would be equivalent to one 208 volt, 3 phase load of 3 KW.
Where am I going wrong?
Click to expand...
Remember they are single phase 208V heaters so this is incorrect.
 
Little Bill said:
"So what would the load be if all six heaters were distributed evenly across all three phases? "

I was just doing the math on what he asked.
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I'm confused- your answer was based on even distribution- it is correct-- each phase would be 50 amps.

Look at post 20 and see if that helps. Obviously if we had most of the load on 2 phases or use the OP's initial setup, then using watts/360 would not work
 
Dennis Alwon said:
If you use the forum settings then you are displaying 10 posts per page. so post 20 would be on page 2 at the bottom. Bottom or top right is where you select the pages.
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I thought there might be a search function or something. I hadn't been on the forum long enough to learn the old style set up and now I'm still trying to figure this new style out.
 
Little Bill said:
Is there a way to quickly go back to a specific post #?
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If you click on the little blue double arrow next to the quotee's name in a quote, it takes you to the original post.

Otherwise, you can click on the post number itself to single out that one post.
 
LarryFine said:
If you click on the little blue double arrow next to the quotee's name in a quote, it takes you to the original post.

Otherwise, you can click on the post number itself to single out that one post.
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Thanks Larry! I knew all those little buttons that I haven't pushed had to do something.

I suppose you've been asked this before. But here goes...Wasn't "Larry Fine" one of the "3 Stooges?";)
 
Little Bill said:
Wasn't "Larry Fine" one of the "3 Stooges?";)
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Yep!
Larry%20Fine.jpg

Dennis Alwon said:
Yep, but now he is our very own stooge.
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I resemble that remark! :)
 
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