- #1
kdcoops
- 3
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. Hello, I have recently been given a course at work as someone left and they had already paid for it, unfortunately I am a bit green to electrical systems ( I only work in stores but want to learn) And my course helper, our onsite electrical man is off on long term sick!
In my course I have been asked:
" Demonstrate a clear understanding on Ohms Law by showing why different voltages are used on certain distribution boards on site"
Now I have chosen to try and explain why we have two different cooling pumps on site. A large one with a motor at 3.3kv and a smaller one at 415v. Using Ohms Law I have worked out that the larger one which runs at 60amp is 198,000 watts and the small one at 228amps is 94,620watts.
What I am struggling with is, if we used a 415v instead of 3.3kv motor on the bigger pump would we need more amps meaning a lot bigger cables to get the power to run the big pump??
I understand it says on site you don't like to give direct answers and I don't expect that but would appreciate any help what so ever and if you could try and keep it pretty simple.
Kind Regards
kdcoops
In my course I have been asked:
" Demonstrate a clear understanding on Ohms Law by showing why different voltages are used on certain distribution boards on site"
Now I have chosen to try and explain why we have two different cooling pumps on site. A large one with a motor at 3.3kv and a smaller one at 415v. Using Ohms Law I have worked out that the larger one which runs at 60amp is 198,000 watts and the small one at 228amps is 94,620watts.
What I am struggling with is, if we used a 415v instead of 3.3kv motor on the bigger pump would we need more amps meaning a lot bigger cables to get the power to run the big pump??
I understand it says on site you don't like to give direct answers and I don't expect that but would appreciate any help what so ever and if you could try and keep it pretty simple.
Kind Regards
kdcoops