[Farmboss17]

I have a 3 wire system well pump (red, black, yellow wires to pump) that has a Red Jacket control box and a Square D pressure sensor. Currently the pressure sensor is wired to the primary load center for the house (a 15 Amp 240v breaker). At this primary load center, the neutral and ground share the same bus bar. I want to connect the Square D pressure sensor to a sub-panel that has separate neutral and ground bus bars (the sub panel has been installed for years and is code compliant). I assume the pressure switch "ground" should be connected to the ground bus bar and not the neutral in the sub panel, but want to be sure.

 

[Jim Port]

Correct, ground to ground bus.

 

[Farmboss17]

Thanks for the fast response Jim.

 

[misterteo]

I remodel some one house and this is my first time with this stuff , i have two wire i pump , the wire that come from the pump are , black , white and red , when my guy took the electric off i forgot to take a picture house they wire , can one of you help me wiring this , three wire come from pump , the presure thing and the box it say L1, l2, red, yellow, black thank you for you help

 

[rrolleston]

I remodel some one house and this is my first time with this stuff , i have two wire i pump , the wire that come from the pump are , black , white and red , when my guy took the electric off i forgot to take a picture house they wire , can one of you help me wiring this , three wire come from pump , the presure thing and the box it say L1, l2, red, yellow, black thank you for you help

Your house or someone elses house and what location?

 

[misterteo]

My relative house , in maryland

 

[rrolleston]

Usually Red and Black are hot L1 L2. But I can't guarantee that it was done correctly. I would be careful working on friends or relatives houses when you are not exactly sure what you are doing.