Electrical wiring is often the part of a pump install that folks feel least comfortable with. If you don’t have a lot of experience with electricity, it can feel dangerous to strip and crimp wires together, or to install pressure switches or starter boxes. Never fear, hopefully the following pages break down each component of our DIY kits wiring install into easily accessible pieces.
When you receive a submersible pump from us, some key electrical steps will include:
Table 1: Circuit Breaker Rating by Pump HP
|
HP |
Volts |
Circuit Breaker Amps |
Standard Fuse Amps |
NM-B Wire Gauge Necessary |
|
½ HP |
110V |
15 |
15 |
14ga |
|
½ HP |
220V |
15 |
15 |
14ga |
|
¾ HP |
20 |
20 |
12ga |
|
|
1 HP |
25 |
25 |
10ga |
|
|
1 ½ HP |
30 |
30 |
10ga |
|
|
2 HP |
30 |
30 |
10ga |
|
|
3 HP |
45 |
40 |
8ga |
|
|
5 HP |
70 |
60 |
4ga |
Diagram 1: Wire Grounding
Diagram 2: Starter Box Wiring
5. If using a pressure switch, which is standard for household applications, you would want to wire it in between your breaker box and starter box. From your starter box, you would wire from L1 and L2 to the T1 and T2 terminals in the pressure switch (the two central terminals). From the breaker box, you would wire to the L1 and L2 present on the pressure switch.
Diagram 3 - Pressure Switch Wiring
6. If you’re not wiring from a breaker but rather to a generator, the wiring can go straight to the pressure switch or starter box L1 and L2. You will need to cap the neutral wire, which is opposite the ground wire (normally green), and use the other two hot wires. For wiring into a GFCI outlet, you can either hardwire from your NM-B wire or splice into a 220V NEMA power cord. We recommend hardwiring to prevent any tripping hazards.
If you still have questions about wiring, we’d love to chat more with you. Again, electricity can be scary, and rule number one is always to turn off any breakers you’ll be working with. Besides that, you’ll want a multimeter to troubleshoot voltages. Still nervous? Call us at (855)-560-5670 or email us at help@ruralpowersystems.com. We can walk you through each step of the process, both pre and post-sale. Since we don’t make commission, there’s no pressure to buy right away, we just go at your pace! We hope to hear from you soon!
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