have had many an argument with electricians wiring to submersible pump motors made by Franklin. Take a look at Franklins wiring chart and how economical it is vs. the NEC.
As one can see the code is a bare minimum safety standard and anything less is not safe.90.1 (B) Adequacy. This Code contains provisions that are considered necessary for safety. Compliance therewith and proper maintenance results in an installation that is essentially free from hazard but not necessarily efficient, convenient, or adequate for good service or future expansion of electrical use.
That must be why so many of us moved to California.
And when you have a dedicated line to a motor designed to SAFELY run on, say 600' of #10 cable and the NEC wants # 6 or 4, you have a serious malfunction between entities. And I bet it means a lot of people neglect to call for a permit. And its a sad waste of a precious commodity that a lot of people cannot afford in our depression.
Starting a 3" submersible pump motor has no relationship to a split phase basic utility motor. Perhaps the NEC should address that.
Sort of like the 100 year old barns in the area with 2x4 rafters that now require 2x12's. I know asking you to question authority is a real uphill run, but much of it has run amok.
As you pointed out the pump can safely operate on 600 feet of #10 then why would the NEC not allow it?
Around my area we are talking about 3 to 4 hundred feet from house to pump and in most cases it will be #12.
Recently caught a guy in the pump forum with the same situation that forgot to add in the 400 feet down the hole. Got a nice thank you from him.
and the winner is: nobody. does there have to be a winner with everything?If you have a above ground jet pump, then you are correct. If you have a 3" Franklin wound, special purpose motor, you should, out of decency to your clients and the earth, use their carefully designed wire chart.
As to house to well head, if you have a 3 wire pump, one can use the NEC to get there, and then use the chart for Frankklins 3 wire pumps to go down the well. These may be several sizes smaller. One line is used for starting and running cap.
Its a whole different ballgame, and I think the NEC deserves to give your students more information.
I see nothing wrong with this suggestion as long as the carefully designed wire chart does not conflict with the NECIf you have a above ground jet pump, then you are correct. If you have a 3" Franklin wound, special purpose motor, you should, out of decency to your clients and the earth, use their carefully designed wire chart.
From the panel to the motor that turns the pump is a series circuit. In a series circuit the current is the same throughout the circuit.As to house to well head, if you have a 3 wire pump, one can use the NEC to get there, and then use the chart for Frankklins 3 wire pumps to go down the well. These may be several sizes smaller. One line is used for starting and running cap.
No, The laws of current flow does not change due to Franklin pumps.Its a whole different ballgame, and I think the NEC deserves to give your students more information.
This is awkward, but...
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