# What is L1 and L2 on pressure switch?

Wiring a Two Wire Switch

The incoming power will land on the line terminals, labeled as L1 and L2. These are the outside 2 screws. The wires are interchangeable. The motor leads will land on load terminals, labeled as T1 and T2 or M. These are the middle two screws and the wires are also interchangeable.

## What is the difference between a 30 50 and a 40 60 pressure switch?

Most well tanks come set at 30/50. The cut-on pressure for the well pump is 30 psi, so the pressure of the tank should have a pressure of 28 psi. If your well tank is on a 40/60 pressure switch, your pressure setting should be 38 psi.

What is L1 and L2 on pressure switch? – Related Questions

## What is normal water pressure for a house with a well?

Normal well water pressure should fall between 40 and 60 psi, so if your pressure is outside the normal range, adjust the pressure switch.

## What is normal psi for well pressure tank?

If your tank is set on a 40/60 pressure switch, you should set the well tank to 38 psi. It’s easy to figure out as long as you’re aware of your tank’s pressure settings. You’ll also notice that in both situations, there is a 20 psi separation between the cut-on and cut-off pressure.

## What does 40 60 mean on a pressure switch?

The 40/60 pressure switch signals the pump to start when the water system drops to a preset (e.g. 40 PSI) and stop at high pressure mark (e.g. 60 PSI). The switch is to be used with submersible well pumps or as a replacement switch. It can be wired 115 volt or 230 volt.

## How do you size a pressure switch?

Pressure Switch Setting

The three pressure switch settings for pressure tanks are 20/40, 30/50, and 40/60. The first number is the pressure at which your pump turns back on and the second number is the pressure at which your pump turns off (i.e. 20psi on, 40 psi off).

## Can you change a pressure switch from 40 to 60?

You can raise the pressure switch-points by adjusting the pressure switch. It’s not uncommon to run at 60/40, and 70/50 is also possible.

## What do the numbers on a pressure switch mean?

All pressure switches have a setting on them which is either the open or close point. It is usually listed as PF (pressure Fall) or PR (pressure rise) along with the setting number. ie: 0.9 PF would open if the vent pressure dropped below 0.9 IWC.

## Is there a positive and negative on a pressure switch?

Positive low pressure switches work by converting a positive pressure signal into electrical output in response to changes in positive pressure. Conversely, negative low pressure switches convert negative pressure signals into electrical output when there is a change in negative pressure.

## What does WC mean on a pressure switch?

All pressure switches have a specific trip point where the contacts close. The pressure switch in the photo will close at negative 0.30 inches of water column (wc).

## What does a 30 50 pressure switch mean?

The 30/50 pressure switch signals the pump to start when the water system drops to a preset (e.g. 30 PSI) and stop at high pressure mark (e.g. 50 PSI). This switch is to be used with submersible well pumps or as a replacement switch. It can be wired 115 volt or 230 volt.

## How many gallons per minute should a well produce?

The Water Well Board suggests that a minimum water supply capacity for domestic internal household use should be at least 600 gallons of water within a two-hour period once each day. This is equivalent to a flow rate of 5 gallons per minute (gpm) for two hours.

## Do I need a low pressure cut off switch?

For Delivery Pump (Demand Pump) applications involving a pressurized bladder tank (ie RO Tank), a Low Pressure Switch is recommended to shut-off the Delivery Pump in the event the RO tank runs empty, thus preventing damage to the bladder and the tank from cavitating.

## What is the difference between a pressure switch and a low pressure switch?

Low pressure cut-off switches include all the features of standard pressure switches. The only difference is that low pressure switches have an off, start and auto feature which helps preserve the life of the pump.

## Does the pressure switch need to be near the pressure tank?

Except for special installations such as constant pressure water pump systems in-well systems that do not use a conventional water pressure tank or water storage tank, the pressure control switch should be located as close to the pressure tank as possible.