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EJ500 timer


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EJ500 Manual

EJ500

Battery operated, no neutral wire required
Astronomic dawn-dusk or programmable
6 ON and 6 OFF settings per week
Incandescent light bulbs only, single-pole or 3-way
USE ST01C or Ei600 for halogen and CFL
Buy:
EJ500 timer at Amazon
LR44 battery at amazon
AG13 LR44 at Amazon
Batteries at Amazon

Manuals:
EJ500 manual
Sell sheet
How to wire EJ500 timer diagrams
CFL bulb    
Not rated for CFL, LED etc.

EJ500 is For incandescent (Tungsten) loads only

For CFL, motors. contactors etc choose EJ600, ST01, Ei600 timers:
Buy:
EJ600 at Amazon
Intermatic ST01c timer at Amazon
Ei600 timer at Amazon
CFL bulbs at Amazon
Resources:
Manuals and ratings for each above timers
EJ500 timer

Not rated for following loads

  • Compact Florescent
  • Energy Saver
  • Flood lights
  • Halogen
  • Mercury Vapor
  • Christmas lights
  • Candelabra bulbs
Do NOT connect EJ500 to following loads:
  • Outlets
  • Socket Adapters
  • Pumps
  • Fans
  • Contactors
  • Relays
  • Appliances
  • Towel warmers
  • Anything besides standard base incandescent light bulbs
Intermatic EJ500 buttons
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Reset timer before programming

And reset timer to restore functionality after power surge, or battery depletion

How to reset timer
Press and hold Next button.
Press and release Reset button
Keep holding Next button down until display changes
Release Next button and display should flash 12:00
Reprogram timer

Timer retains memeories until reset.

Timer has 1 year limited warranty
Use Ei600 timer for 5 year limited warranty

Battery compartment located below buttons

How to replace battery on EJ500 timer
Pry out with small screwdriver
EJ500 takes two LR44/SR44 batteries
Error NoOP = replace batteries
Reset timer... press and hold on-off button, then press reset button momentarily
Release reset button
Keep holding on-off until 12:00 flashes on screen
Reprogram
EJ500 Manual

If functionality is not restored, then replace timer
Buy:
EJ500 timer at Amazon
LR44 battery at amazon
AG13 LR44 at Amazon
Batteries at Amazon
EJ500 wiring

Single pole wiring

Single pole switch has 2 wires plus bare copper ground wire.
Timer works for Incandescent light bubs up to 600 watts
No underground wiring
Maximum distance 100' (Most inwall timers have same distance limit)
No neutral wire needed
Single pole switch has two wires + plus bare ground wire.
One of the wires connected to switch will be Hot wire.
Connect Timer Black to Hot wire
Connect Timer Blue to other wire (Load wire).
Connect bare copper wire to ground wire.
Cap Timer Red wire.
Timer Red is only used in 3-way wiring

Turn power ON.
Press timer door like a push-button switch.
If light turns ON-OFF then timer is wired correctly
If light does not turn ON-OFF, then reverse timer blue and black wires.

Troubleshoot wiring:
Reverse blue and black wires.
Make sure red is capped.
Make sure bulb works
Check circuit breaker
Check wire nuts are tight against both wires
EJ500 wiring

Single pole with only 2 wires in box

Follow same instructions above


Timer Red wire

Timer Red is only used for 3-way switching .... but it can be used another way.
Connect Timer Red and Timer Blue if youn want dawn-to-dusk operation instead dusk-to dawn

Typical 3-way switch wiring

Common screw is dark-colored
Traveler-screws are brass colored

Line side connects to line from breaker
Load side connects to light
3-way switch
Timer replaces one 3-way switch
Other 3-way must be rewired
Identify wire that connects to common screw
Usually the dark-colored screw
1) Take photo of wires before disconnecting old switch.
2) Note which wire connects to dark-colored screw
3) If screws are not color-coded: Look on back of old switch to see which screw is marked common, and then mark that wire as common.

Common wire will connect to Timer Black wire, or Timer Blue wire.
Wire EJ500 timer
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With timer on Load side: if electricity goes OFF, then timer will start to click on-off using the battery. If this happens, click the 3-way switch up or down. Afterwards, the timer will no longer click on-off.

If power remains off for a while, the current time must be re-programmed. However the scheduled programs are not affected by power outage and remain in memory forever until timer is manually reset.

3-way / Timer on Load side

Timer on Load side
Blue wire connects to wire that was connected to common screw
Timer black wire must always be connected to Hot
Blue wire must always go to Load
When power is applied to red wire, the timer programming reverses.

Remember, the remaining 3-way switch has to be rewired as if it was ordinary on-off switch using common screw and one traveller screw.
When the switch is turned ON-OFF, it reverses timer programming.
Wire EJ500 timer
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3-way / Timer on Line side

Timer on Line side
Black wire connects to screw that was connected to common screw
Timer black wire must always be connected to Hot
Blue wire must always go to Load
When power is applied to red wire, the timer programming reverses.

Remember, the remaining 3-way switch has to be rewired as if it was ordinary on-off switch using common screw and one traveller screw.
When the switch is turned ON-OFF, it reverses timer programming.
ST01C timer controls 240Volt water heater

Use ST01C or Ei600 to control any voltage Load

EJ500 is for incandescent only.
Use ST01c for any type Load, and any voltage circuit
Example shows ST01C connected to 240Volt line
Buy:
Intermatic ST01c timer at Amazon
Intermatic ST01 timer
CR2 replacement battery at Amazon
CFL bulbs at Amazon
Manuals/ resources:
ST01C manual
Sell sheet with model numbers
How to program ST01c and Ei600 timers
How to wire ST01C and Ei600 timer diagrams
Control any 240volt load with ST01c or Ei600 timer
Contactors
GFCI

240Volt GFCI and T104 timer

240V GFCI has white wire. This wire must be connected to neutral busbar
Wires going to Load connect to breaker in usual way, except there are 3 connection screws on 240 Volt GFCI
Connect neutral going to Load to center screw on breaker
Connect Hot leads going to Load to other two screws on breaker (either wire to either screw)
General rule/ Load neutral not required: The Load Neutral does not have to be connected to center pole on breaker.

Resources:
Wiring-GFCI.pdf How to wire GFCI
How to wire T104 timer
Intermatic timers and manuals
See inside main breaker box

T104 timer
Buy Intermatic T104

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How to install electric water heater
Troubleshoot gas water heater
Troubleshoot electric water heater
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