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EJD3
 
 
 
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    November 27, 2012
  • Last review
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    November 27, 2012
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    April 25, 2013
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EJD3's Reviews
 
Grainger Item #: 3FWZ4
Wall Switch Timer, Decorator Electronic, Number of Channels 1, Number of Poles 1, Contact Form SPDT, Voltage 120-277, Watts 1800-4155, Amps 20, 1 HP @ 120V, 2 HP @ 240V, Max On/Off Cycles 40, Min Time Setting 1 Minute, Max Time Setting 6 Days, 23 Hours, 59 Minutes, Plastic Enclosure, Color White, Battery Type Lithium, Operating Temp 32 to 104 F, Length 6 5/16 In, Depth 2 1/8 In, Width 3 In
 
Overall ratingĀ 
3 out of 5
3 out of 5
Yes, I recommend this product.
PostedNovember 27, 2012
Nice timer, automatically calculates dusk/dawn based on your location. Auto DST too.
But it won't fit on a 2-gang steel box cover. The yolk doesn't have breakaway tabs. You have to cut it to make it fit.
Other than that, did everything I needed.
+5points
5of 5voted this as helpful.
 
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EJD3's Answers
 
Grainger Item #: 3FWZ4
Wall Switch Timer, Decorator Electronic, Number of Channels 1, Number of Poles 1, Contact Form SPDT, Voltage 120-277, Watts 1800-4155, Amps 20, 1 HP @ 120V, 2 HP @ 240V, Max On/Off Cycles 40, Min Time Setting 1 Minute, Max Time Setting 6 Days, 23 Hours, 59 Minutes, Plastic Enclosure, Color White, Battery Type Lithium, Operating Temp 32 to 104 F, Length 6 5/16 In, Depth 2 1/8 In, Width 3 In
 

can i program it to run different times for different days

I want to run my times from 7 am to 6 pm monday threw friday, and 4 hrs on saturday and off on sunday?
you can have up to 60 different on off times per week. this also calculates dawn and dusk times for automatic adjustment of those times. that means you don't have to mess with it as the days get longer and shorter over the course of the year.

So, yes, this will do what you need...
11 months ago
by
EJD3
 

Astrological time clock

Do you carry an Astrological time clock?
They have astronomic timeers that automatically adjust time of day for your longitude and latitude; they also adjust for DST...
Is that what you needed?
1 year, 1 month ago
by
EJD3
 

Astrological time clock

Do you carry an Astrological time clock?
3FWZ4 is a wall-switch type timer. I'm not sure what you mean
by Astrological timer, but this one will automatically change times based on your geographical location. It tracks dawn-to-dusk times, which change with the season.
If that is what you meant, than this timer is a good one.
1 year, 2 months ago
by
EJD3
 

when a timer indicates it has 2 channels; does this mean it can program 2 independent appliances with independent time schedules?

when a timer indicates it has 2 channels; does this mean it can program 2 independent pumps with independent time schedules? I want to turn my pool filter pump on at a certain time schedule and my pool sweeper on at a different time schedule.
2-channels mean 2 relay outputs independantly programmed. Check the timers on pg 407 of catalog 403.
1 year, 4 months ago
by
EJD3
 
Grainger Item #: 5DXW9
TIMER, Electronic, Min. Time Setting 30 Minutes, Max. Time Setting 30 Minutes, Max. On/Off Cycles 1, Voltage 120, Watts 1800, Amps 20, HP @ 120V 1, Type of Switch Mechanical, Color White, Ivory, Light Almond, Length 4 1/8 In., Width 2 3/8 In., Depth 1 1/2 In., Style Wall Switch, Number of Gangs 1, Standards UL/CSA
 

how to wire

This switch has 4 wires, black, blue, green and white. Please tell me how to wire and what each color represents as existing on/off switch has only 2 wires from it.
This timer requires a neutral, which is not always available in a light switch box.
The black wire goes to 120vac hot, the white to 120vac neutral, the green to ground, and the blue goes to the load. This could be a heater, motor, light or whatever. The load will be supplied with 120vac.
Also, since this is a 20amp device, it has to be wired using #12 wire.
The load cannot be more than 1000watts resistive (light bulbs or heaters), or 20amps. And the motor cannot exceed 1 horsepower.
1 year, 4 months ago
by
EJD3
 

Looking for a Battery Voltage Indicator for a 48 volt Golf cart, can you help?

Try Newark Electronics at www.newark.com. Part #65K4616 should do what you want. This is an analog meter. The digital types usually need an external power supply.
1 year, 4 months ago
by
EJD3
 

What is the difference between a SPST vs DPST contact on a timer?

I need a timer for my typical pool motors that run on 240 VAC.
One is a filter pump, the other is a sweep pump.
It looks like I need a 2 pole switch with 2 "channels"; but not sure of the relevance of the contact type: SPST vs DPST
SPST means single pole, single throw. This type has one contact pair, and can control one leg of a voltage source.

DPST means double pole single throw. This type has two contact pairs, and can control two legs of a voltage source.

In both, the contact pairs move on the same armature, opening and closing at the same time.

If both motors come on and off at the same time, a DPST could be used, as long as it is sized to handle the total HP, voltage, and amps of both the motors. You would also have to fuse the line side of the relay correctly, and overload protect the motors on the load side. Easiest way to do this is get a motor starter sized to handle both motors.
1 year, 4 months ago
by
EJD3
 

A timer that has 1 pole can only turn on a 110 circuit or can it control a 220 circuit?

would have to have a neutral for single pole. 120 or 277, not 220.
need a 2-pole for that.
1 year, 4 months ago
by
EJD3
 

Is there a battery-operated timer that can operate a spst switch?

I have a light that is controlled by a spst switch. I would like to put it on a timer, but there is no means for powering a timer motor. I know that there are timers that mechanically throw an existing wall switch. Are there any other options, such as a timer that operates a SPST switch that is powered by an internal battery...?
3FWZ4 should do the trick. 7-day timer, see the description online or in the catalog
1 year, 4 months ago
by
EJD3