Outdoor power for pumping station

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evil_adm1n

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orlando FL
Ive lurked for a long time and decided to register to ask my question. I've got a few. First background of what I am doing.

I am sending power to a pumping station out near a creek in my backyard. Each pump is 1hp cap start wired for 240 volts. Running amps of both are roughly 21. I've already run direct burial xhhw 5 conductoropposed cable (4x8awg, 1x10 green for ground) Run is 200 ft.

My questions concern proper grounding, conductor usage and OCPD sizing.

I see 2 options:
w1 and w2 are both hots, w3 neutral and w4 or green as ground. Local ground rod bonded.

W1 and w2 on one pole, w3 and w4 on the other, no neutral and green for ground.

Nothing out there needs 120. Is option 2 legal?

As for the OCPD, I have a 30 amp gfci in the main panel. Is the gfci required even though i'I'm only running irrigation and not a pool? If I wire using option
 
For some reason my post got cut off.

Anyway, I guess my questions come down to how to properly ground this outdoor service, if I am required to carry a neutral (everything is 240the volt), and if I can double up on the conductors like I described to have less (I^2)R losses.

Another piece of info, this station is 15 feet from the creek above the flood plane.

I looked at articles 675 and 680 thinking threy may apply but I don't know so I figured that the experts here could get me set straight.
 
evil_adm1n said:
Ive lurked for a long time and decided to register to ask my question. I've got a few. First background of what I am doing.

I am sending power to a pumping station out near a creek in my backyard. Each pump is 1hp cap start wired for 240 volts. Running amps of both are roughly 21. I've already run direct burial xhhw 5 conductoropposed cable (4x8awg, 1x10 green for ground) Run is 200 ft.

My questions concern proper grounding, conductor usage and OCPD sizing.

I see 2 options:
w1 and w2 are both hots, w3 neutral and w4 or green as ground. Local ground rod bonded.

W1 and w2 on one pole, w3 and w4 on the other, no neutral and green for ground.

Nothing out there needs 120. Is option 2 legal?

As for the OCPD, I have a 30 amp gfci in the main panel. Is the gfci required even though i'I'm only running irrigation and not a pool? If I wire using option
Click to expand...

What the heck??? You are not being clear here at all. Something is wrong in your thinking or wrong in your depiction.

Secondary: you don't size conductors per RUNNING load amps, you are required to size them based on Charts in the NEC that correspond to HP sizes, then on FLA from the motor nameplate if the motor HP is not on the chart.

Are you an Electrician or is this a home project?
 
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