Help with translating a 2-speed pump wiring diagram

thegame9377

Well-known member
Jun 3, 2012
50
Louisville, KY
I'm trying to put in a new 1.5 HP, 230v 2 speed pump and just want to make sure I have the wiring right before I fry the thing. I'm wanting to wire it with a DPDT switch so I can have the "off" position in the middle.

I found this diagram posted in another thread by forum member Ohm_Boy, which seems pretty straight forward:

file.php


Where I get a little fuzzy is when I look at the diagram on the side is how to convert the "L2", "Low", and "High" in Ohm_Boy's diagram into the 1, 2, and 3or4 listed on my pump:

pump1.jpg


...and this diagram on the side of the pump shows a diagram with what I believe is a DPST, not the DPDT I want to put on:

pump2.jpg


Now, am I correct in the below diagram in assuming that "L2" is my pump's 1, "Low" is my pump's 2, and "High" is my pump's 3or4? That would have it looking like this:

Diagram.jpg


Thanks in advance!
 

nedchavez

LifeTime Supporter
Jun 11, 2012
111
Grand Rapids, Michigan
Your diagram is correct (I am an electrician/instrument tech). Just make sure your switch is rated to handle the motor current.

Edit: in your drawing low and high speeds are reversed but it still works.
 

jblizzle

Mod Squad
TFP Expert
LifeTime Supporter
May 19, 2010
43,238
Tucson, AZ
I agree the diagram on the pump is a little confusing using a spdt

But, your last diagram is correct.

Posted from my Droid with Tapatalk ... sorry if my response is short ;)
 

thegame9377

Well-known member
Jun 3, 2012
50
Louisville, KY
nedchavez said:
Just make sure your switch is rated to handle the motor current.

Does this one fit the bill?

http://www.radioshack.com/product/index ... d=12708873

NTE54-109 20A nylon paddle toggle switch.

Slow make, slow break contacts
Heavy duty AC rated, also suitable for low voltage DC applications
Industry standard .500" diameter mounting hole
Circuitry: DPDT
Switch action: ON / OFF / ON
Actuator: black polycarbonate
Current rating: 20A 125-277VAC, 1 1/2 HP 125VAC, 2 HP 250VAC
Insulation resistance: 100 megohms (min.)
Dielectric strength: 1000V RMS (min.)
Temperature rating: 32° to 185°F
Electrical life: 50,000 cycles
Mechanical life: 100,000 cycles
Mounting hole: .500"
 
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