Well pump wiring


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Old 08-25-19, 10:17 AM
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Well pump wiring

I'm getting ready to pull my submersible well pump to replace (22 years old), and noticing that there are only two wires running from house down to pump. Both wires are black and I'm assuming there is no ground wire. The casing is pvc and I'm wondering if a ground wire is necessary?
 
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Old 08-25-19, 10:35 AM
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Make sure you know if you have a 120v or 240v well system. I've seen many old well systems with no ground wire. I'm not really sure why that is. I'd want my pump grounded.
 
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Old 08-25-19, 11:21 AM
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It must be 240 as I'm getting 120 reading off both wires. There's a ground wire from fuse box to switch on pressure tank, but only two wires leaving box to well pump
 
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Old 08-25-19, 01:03 PM
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That does sound like a 240v system.

When you replace your pump you could use three wire cable and ground the pump.
 
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Old 08-25-19, 01:42 PM
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So I'll need to run a third (ground) wire from pressure switch at tank out to the well head to attach ground wire coming from pump?
 
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Old 08-25-19, 02:05 PM
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I would.

You said you're replacing your pump. See what they recommend.
Is your well casing steel ?
 
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Old 08-25-19, 05:40 PM
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It is a plastic (pvc) casing.
 
 

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