Electrician Training Electrical Certification wiring recessed light fixtures Electrical Wiring Electrical Troubleshooting and Electrical Repairs wire outdoor light fixture Home Electrical Wiring Diagrams
wiring home generator and transfer switch wiring a 220 volt range cord outlet Wiring for GFCI Outlets Wiring Outlets and a Switched Outlet Wiring and Installing Ceiling Fans and Remote Controls wire dimmer switch wiring diagrams for switches wiring a dryer cord and 220 outlet circuit breaker panel
Electrical Wire and Cable

How Electrical On-Delay Staging Relays Work

staging-relay By
Summary: This section will cover the use of relays that are sometimes needed to control special device loads such as Air Conditioners and other high demand equipment from starting at the same time.

Problem Solvers for Air Conditioners - Energy Savers for Large Electrical Loads

  This method will help prevent nuisance tripping of sub-feed circuit breakers and reduce the electrical demand on your utility service which could lead to much higher energy bills.

• 3 or 5 minute fixed
• Works with anticipator thermostats

When power is applied to the input, the
time delays begins. After the time delay is
complete, the load energizes and remains
energized as long as power is applied.
The control is reset by removing power
during or after the time delay period.


1. Disconnect power.

2. Connect terminals in series with the
starting device as shown in the wiring
diagram below.

3. Reapply power, check operation.

4. Trickle current bypass resistor
T1 to T3 <1K ohm.

2-Wire Compressor Staging/Startup Delay Timer:



• Voltage: 18-30 VAC
• Frequency: 50/60 Hz
• Output Ratings:
– Maximum: 1.5 amps
– Minimum: 40 mA
– Inrush: 15 amps
Time Delay
• 3 or 5 minute fixed


Join the Discussion!

Add Your Home Wiring Question or Comment

Electrical Wiring Question
click here to ask a home electrical wiring question
click here to leave a comment

»Avoid Costly Mistakes«
Wire It Right with the help of my Illustrated Wiring Book

Great for any Home Wiring Project,
Perfect for the Homeowner, Handyman, Electrician and Building Inspector.

See How to Wire it Right!

Learn more about How to Wire a House
Complete Guide to Home Electrical Wiring
Perfect for DIY Homeowners
Wiring Electrical Control Circuits
Installing Electrical Panels
Wiring Sub Panels
Electric Well Circuit
Septic Pump Circuit
Wiring a Heater Circuit
Wiring a Air Conditioner Circuit
....and much more.

» Click here to learn more about Home Electric Wiring «
  electrical wiring  

Search to see more.....

Questions and answers about wiring electric control relays, wiring installation, troubleshooting problems, inspection and repair.

Your question may already be answered,
use this search to see answers:
Do you have an Electrical Question?
Ask an Electrical Question

Top of Page