Electrical Advice Sought

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Forum topic by Milo posted 09-25-2013 11:44 PM 1340 views 0 times favorited 8 replies Add to Favorites Watch
View Milo's profile


869 posts in 3587 days

09-25-2013 11:44 PM

Hey Everyone, hoping one of you electrical types can tell me if I can do this or not.

I want to hook a timer into a surge protector that I want to use for charging my drill batteries.

Unfortunately, while I was expecting the timer to be like a light switch, with the incoming wires and the outgoing wires. Instead there is one set of 4 wires, red, white, green, and black.

Here is a picture of the timer and the wiring I want to splice it into, plus the instructions.

I THINK I understand what I need to do. I believe I need to add an additional white wire. If you can verify this and give me any advice on how to adapt the instructions to the wiring, rather than an outlet, I would be grateful.



-- Beer, Beer, Thank God for Beer. It's my way of keeping my mind fresh and clear...

8 replies so far

View REO's profile


929 posts in 2341 days

#1 posted 09-26-2013 12:38 AM

cut the cord. all greens together. all whites together. black wire to the black coming from the plug. red to the black wire going to the charger.

View crank49's profile


4032 posts in 3238 days

#2 posted 09-26-2013 12:41 AM

If you don’t want to read all this, what REO said.

Is that wire you split the insulation on the power cord from a surge strip that plugs into the wall outlet?

If so, you have all the wires you need.

That wiring diagram is about as useless as tits on a boar hog. Don’t go by it unless you have a death wish.
It would have you connect the hot wire to the neutral and the ground. That would be interesting.

I would get a different timer if I was you.

If you are feeling adventurous and want to try to use this thing anyway, I’ll tell you how I would do it if it were mine and returning it was not an option.

Again this assumes the split wire in your photo is the pigtail from a surge strip.

I would unplug it first, then cut the black wire into and strip both ends.
I would then connect the black wire coming from the wall plug end to the black wire going to the timer.
And then I would connect the red wire from the timer to the black wire going to the surge strip.

The next thing I would do is strip enough insulation off the white wire in the power cord to connect to the white wire going to the timer.

The next step I would do is to connect the green wire in the same manner as I just did the white wire.

At this point I would have three white wires tied together, three green wires tied together, two black wires tied together and one red and one black wire tied together.

At this point I would isolate and insulate (tape) each of these connected groups of wires.

The final step I would take is to turn off the breaker servicing the outlet I plan to use, then plug the pigtail for the surge strip back into the outlet. After making sure nothing is shorted I would turn on the breaker and check for smoke, flashes of light, popping noises or anything else that looks or sounds bad or out of place.

If I made it this far and nothing seems amiss, I would plug a light into the strip and see if the timer works.

By the way, I would probably have run the pigtail through an electrical outlet box and put cord grips on the two wires coming out of it just to keep this thing legal and safe.

That’s how I would try to use that timer. I’m not suggesting anyone else try it; and I certainly am not responsible for what anyone else might do on their own.

View Milo's profile


869 posts in 3587 days

#3 posted 09-26-2013 02:18 AM

I just thought having a “hot tub” type timer would be easiest.

The plan is for my charging station. I just want to be able to put all my batteries on their chargers, set the timer, and 30 minutes later the whole station is shut down, and none of the batteries suffer from that “trickle” effect that damages them over time.

Haha, thanks REO, and thanks Michael. I have no probkem reading the whole thing. I already have one of those blue electrical outlet boxes all ready to go just for this purpose. I definitely wasn’t going to just leave the timer just hanging there!

YES, the split wire is from the surge protector. I am guilty of “assuming” on that one. Sorry!

And thanks for the advice on the diagram. That’s EXACTLY why I came here first. I knew there were plenty folks that could give the straight talk on what to do.

-- Beer, Beer, Thank God for Beer. It's my way of keeping my mind fresh and clear...

View Bluepine38's profile


3380 posts in 3353 days

#4 posted 09-26-2013 03:19 PM

Some people have problems with the batteries getting drained by the charger is the current is off. It might
be a good idea to check with the companies providing the chargers & batteries before doing this.

-- As ever, Gus-the 80 yr young apprentice carpenter

View MrRon's profile


5364 posts in 3511 days

#5 posted 09-26-2013 08:26 PM

Looks like that timer is for use on 220VAC, not 110VAC.

View Grandpa's profile


3261 posts in 2943 days

#6 posted 09-27-2013 03:08 AM

My charger (Rigid) will drain my batteries over night. They will be dead as a mackerel the next day.

View Milo's profile


869 posts in 3587 days

#7 posted 09-27-2013 10:10 PM

For those of you that are interested, here is the result…

It seems to work just fine, and gets all my drills up and out of the way. You can’t see it, but there is a power strip on the right side of the charging station.

Thanks for all the help!

-- Beer, Beer, Thank God for Beer. It's my way of keeping my mind fresh and clear...

View Joe Lyddon's profile

Joe Lyddon

10439 posts in 4320 days

#8 posted 09-27-2013 10:20 PM

Very clever Milo…

Now, where is the Hot Tub?! LOL

COOL arrangement.

-- Have Fun! Joe Lyddon - Alta Loma, CA USA - Home: ... My Small Gallery:"

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