The DC takes needs 20 amps and I cant find a remote for more than fifteen unless I buy the ready made and I have heard bad things about them. You can see his article here: Shop-Built Wireless Dust Collector Remote. If this makes you nervous, dont do it. capacitor start motors) are harder to find and much more expensive. Found a two pole, 120v coil contactor at Carolina Supply and the rest of the parts I needed at Home Depot and Lowes. All I have in the shop is a cyclone. In fact, you will often see these sold as Christmas light remotes. This has decreased its footprint, but it has also made it somewhat difficult to get to the on/off switch. Granted, I paid a lot more money for itthan others available on amazon, but I think this one should give me many years of use. Being able to turn on the dust collector and the air cleaner at the same time is convenient and thus actually encourages me to use it. Thank you. I am in the process of wiring my dust collector system following your example. I still need to tidy up the wires a little and Ill probably use cable ties to do so. My remote switch is up and running, just waiting for my Jet DC650BK to arrive (switching to 230v). 
You said it perfectly and I dont disagree with a single thing you said. Better yet hire someone. the 120 \v line is connected to the lugs near the base of the contactor. 1This page shows how I wired up my wood-shop dust collector to work with a wireless remote switch. I just wired the input and output for those lines together with a wire nut.
If youre not sure if this meets code for your area, check. You just made this post much better for anyone who comes along and reads it later. Why not control the air-conditioner directly? All of the grounds were linked together and a ground run to the box itself. A little cheaper than store bought and a whole lot beefier. I would have loved to put my dust collector outside the shop, but with the way mine is setup, that just wasnt possible. I hung the remote on my bandsaw which is in the center of my shop. This means it can handle motors of up to 5 horse power. The original poster, Dominic Greco from Two Guys In A Garage Toolworks, also wrote a great article on his website showing the steps he took to install this system. 
Graham, Can this be altered to accommodate a 110v 1.5hp dust collector. I went to a few stores locally to get the best prices on all the relevant parts. I really appreciate you taking the time to comment here. I suppose that I could have used the third pole to switch the neutral line, but didnt think that made any sense. The 120-volt wireless remote switch needs to be placed in between the wall outlet and the 120-volt line in on the new junction box. If you would like to see all of my blog posts about installing my dust collection system, you can find them here: You description of the setup with the contactor is exactly what I need except that I cant quite make out how the contactor is wired. Drilling some mounting holes at the drill press. Before I get started, I suppose I should give a little explanation of what this system is supposed to do. Heres the remote that I bought from Amazon: The contactor that I purchased from my local electrical supply specialist is heavy-duty. Way more than I currently need, but unlikely to wear out, and it has plenty of capacityif I ever upgrade the dust collector. Thanks again for the idea.
Washer head screws used to install the junction box. Thanks for your comments.
I pressed the on button nothing. Dumb question but how do you mount the contactor to the box?
Is that a problem? This site uses Akismet to reduce spam. I went to my local electrical supply specialists, Home Depot, a local plumbing supply place that also carries a lot of electrical stuff, and a local general store. This means that a 120-volt and a 240-volt wall outlet are both needed in the area where the system in installed. 
And wouldnt that leave a bump on the back of the box? Mine has been working flawlessly for three years. Im doing this with mine. I tried this several times, from various location in the shop, even with the remote 12-inches from the switch, and the situation never improved. Since this is in the middle of my shop, its never far out of reach. Mine has a much heavier duty contactor. Thanks!
That is what your description states but I was not understanding what below meant. When buying a contactor, make sure you get one that takes a 120-volt signal. When you activate the remote, your hear a significant SNAP as the contactor activates.
I hesitated to use the word bang as it is not firecracker loud, but it is definitely more than a click. I use the first with the contactor that drives the dust collector and the second for the air cleaner, which is 120v and does not need a contactor, and I use the third for whatever might be useful like a light. So Im using only one side of the contactor I bought, and no tripped breakers. The system that I have designed is similar, but has a few changes that youll see as we progress. Connecting the junction box and the handy box. I pressed again, and again, and again. I didnt know what a contactor was till I read your article.
I tested the system before plugging in the dust collector to the new outlet. But, do you want 240-volt, 50A power running to your thermostat? Two other things to consider. DIY Dust Collector Remote Switch - comment on how to build a Dust Collector Remote Switch - 0 comments. 
I used cord grips (nylon grommets) where the wire went through the wall of the junction box. I was thinking that you were referring to the contacts at the bottom of the photo and that clearly is intended for the 240 volt line in. Graham.
Thanks for commenting and clarifying the wiring. In this example, a 24-volt low-power wire runs from your thermostat to either your air conditioner or furnace. The cost of the three outlet set was still very cheap. A Woodworking and Hand Tool Restoration Blog, How to Set-up A Wireless Remote Control Switch For Your Wood Shop Dust Collector, How to Make Blast Gates for Your Woodworking Shop Dust Collection System, How To Make Brackets to Hang PVC Pipe for Woodworking Shop Dust Collection System, Shop-Built Wireless Dust Collector Remote, Electrical Junction Box $ 9.00, 1/2 Cord Grips (Nylon grommets) 2@ $1.92 $ 3.84, 14/3 wire 5 feet @ $0.63/ft $ 3.15, 12/3 wire 5 feet @ $0.97/ft $ 4.85, 120V 15A Plug $ 3.97, 250V 20A Plug $ 5.19, Handy Box $ 0.68, Handy Box Face Plate $ 0.68, 250V 20A Receptacle $ 4.97, Offset Nipple $ 2.05, Conduit LockNuts $ 0.78. Essentially, one electrical circuit is used to switch on/off another separate circuit. If you buy a 24-volt controlled contactor, youre going to fry it. If I am still wrong, please let me know so I dont mislead others. I was able to off-set some of this extra cost by shopping around for the other parts and getting a pretty good deal on them. I contacted Grizzly and arranged to send the unit back. I purchased the 120-volt remote from Amazon. The 240-volt line comes in and attached to the bottom screws on the contactor. So, with all that out of the way, lets get started. Last thing before we get started! Even were this not the case, I would still like to add a wireless remote, as it will make the system much easier to use. I think the low power remove paired to a contactor is a much better option. Another major advantage of having the collector placed in a remote location is that the noise in my shop to a whisper. If so, do you put the head of the screw inside or outside? Proceed at your peril! cyclone grizzly collector phase features dust hp industrial I dont know what an electrician would say about that, but it has been working well for me. Constructed from an appliance-grade contactor, a 24-volt transformer, and 3- and 4-way switches. You are correct, by below, I meant at the base of the contactor, not the lower part of the photo. I decided to build my own remote system after reading a thread on Woodnet.net. When the wireless remote activates the 120-volt circuit, this fires off the contactor and starts the dust collector. Learn how your comment data is processed. I connected the handy box to the junction box using an offset nipple and some locknuts. The two main components are a 110v wireless remote (Christmas light) switch and a contactor. Click here for 27 plans for dust collectors, 40 Plans for Homemade Sanders: Disc, Drum, Spindle, and Thickness Sanders, Definition of kilogram, amp, and kelvin set to change forever, Roubo's Winding Sticks - 18th Century Design, Crane tips over while lifting bulldozer - GIF. If I recall correctly, I just put a washer head wood screw through the contactor, through the housing box, and into the plywood behind. I found that Grizzly had a newer model 240V Dust Collection Remote. The other thing is checking to see what kind of switch you already have on your dust collector. Youre also right that I only used two of the three available poles on the contactor. A good example of this would be the thermostat in your house. Another advantage of this system is that because the remote control works through walls I was able to put my dust collector in the garage. I have a back ground in electonics and grasped your theory right away. Homemade dust collector remote switch intended to enable the ground-level system to be started from an attic workshop. I did not want to cut the plug off the dust collector cord. If it has a magnetic switch, you are going to have to do some googling to see how you can bypass it. Next I started to run some wiring. So, in my case, Im going to use a cheap 110-volt wireless remote switch to send an electrical signal to an appropriate sized contactor. If it is a simple on/off switch that you can leave in the on position, youre in business. The 240-volt wall receptacle is above the shelf and the the 240-volt line in plugs in there. This will turn on and off the much more powerful 240-volt circuit that goes to the dust collector. I agree completely. On about the tenth attempt the dust collector finally turned on. A big thank you goes out to Dominic Greco for the inspiration to set my remote system up this way. Yes, I suppose that this could be done that way. In my case they are labled A1 abd A2. It is primarily used to allow a low power circuit to activate a much more powerful one. Get 500+ tool plans, full site access, and more.
I attached the junction box to the plywood using washer-head screws. That said, the commercially available 120v remote switches are cheap enough that its probably a waste of time to do all this for a 120v tool. Im not an electrician. On a single phase, 240 volt circuit, it will handle 30 amps of inductive load. dust switch vacuum vac festool autoswitch toolmonger remote pharmacy tramadol I put the contactor in the junction box and marked where holes were needed (you can just see the black dots below). Total Spent: $ 87.68 (plus the taxman). 14 AWG for the 120-volt line and 12 AWG for the 240-volt. Instead of asking for a replacement, I decided to build my own. Admittedly, doing so would have made things a little simpler, as I could have run the cord directly inside the junction box.
Thanks Jonathan for the quick response and confirmation of my intended clarifications. There are a few differences in my system from the one I linked to earlier. It was about $60 with tax and shipping, by far the cheapest commercial option, so I thought I would give it a try.