I need to install 2 pumps in my pond, about 330 ft to the power meter box. The pumps I am looking at typically draw less than 7 amps. Which is the best wiring option? One pump for a fountain on a timer. The other pump, not used daily, is activated on a float switch.( only during very heavy rain to prevent pond overflow) I was thinking of using #8 wire. I can turn off the fountain during heavy rains so only one pump will be used typically at a time.
Pond pump at 330ft
- Thread starter bobs66flh
- Start date
dave*99
Well-known member
Can you get 240V pumps? Half the current.
Firebrick43
Well-known member
They should be 220
Why not just make an gravity overflow pipe? I assume its a dam pond or why worry?
Why not just make an gravity overflow pipe? I assume its a dam pond or why worry?
dave*99
Well-known member
PVC Conduit underground is a good option. A single 240V circuit may support the pumps. Once you know the total current look at the voltage drop on 660 ft of wire for different gauge.
sparky 1971
Well-known member
There are plenty of online voltage drop calculators, so I'm not going to bother plugging in the numbers. Just guessing, #8 would be fine for each pump at 120 volt. At 240 volts. 10 would probably be plenty. You could probably run #4's, maybe even #6 and set a small outdoor sub panel by the pond.
Just curious 330ft to the meter seems far, no circuit closer if you are only drawing 7 amps?
I run for my fish tank a 24v dc pump, it flows quite a bit. If you could get away with low voltage, your wiring could be way less.
I run for my fish tank a 24v dc pump, it flows quite a bit. If you could get away with low voltage, your wiring could be way less.
dave*99
Well-known member
That pump is 105 Watts. The OP is asking about powering 840 watt pumps. That's quite a difference. I suspect a fountain on a pond will require a sizable pump.
dave*99
Well-known member
This is available in 240V. Be sure to use a GFCI.
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