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View Chadookydo's profile

Power for new 240v table saw

by Chadookydo
posted 02-04-2018 03:47 PM


9 replies so far

View Marlow's profile

Marlow

178 posts in 2820 days


#1 posted 02-04-2018 04:15 PM

Exactly what I did: works great.

View msinc's profile

msinc

535 posts in 652 days


#2 posted 02-04-2018 04:22 PM

If the saw has a plug on the end of its cord then you can run a drop down with a single dedicated circuit receptacle. If it is meant to be hard wired {no male plug at the saw, just wires or a box on the saw for wires to run to} then you will need to have a fixed post {can be metal, can also just be a 4×4} at the location and a service disconnect box for code. Single phase 240, which is really just two 120 volt lines on different phases, could be either way depending on how the saw is configured from the factory. Three phase power will require a hard wire and a disconnect box at the machine.
You can add a plug to the saw, but if it didn’t come that way from the factory I wouldn’t recommend it. Will it work? Yes. Is it safe? Maybe. Is it code? No. Better to not take chances with power, especially 240 volt. If the saw has a plug and you run a drop down just be sure to use proper strain reliefs at the junction box in the ceiling and the receptacle box on the end.

View Fred Hargis's profile

Fred Hargis

5097 posts in 2642 days


#3 posted 02-04-2018 05:10 PM

That’s what I did in my last 2 shops, and also what I’ve done in the current one (not yet quite finished). In my case I wrapped the cord around the DC duct work for support, if it just hangs I would put some kind of relief on it (a screw eye zip tied to the cord or something) and it would probably be better to use locking plugs and receptacles.

-- Our village hasn't lost it's idiot, he was elected to congress.

View Marlow's profile

Marlow

178 posts in 2820 days


#4 posted 02-04-2018 05:30 PM

Pic. of installation. Cable grips hold cable without damage to jacket, spring provides some margin when the cords are (inadvertently) pulled. Suggest strongly NOT to use locking receptacles: when the cords do get yanked, standard plug will simply pull out of standard receptacle. If locking plug/receptacle is used, you could be pulling down part of your ceiling and stressing electrical connections to box: could ruin your whole day.

View JBrow's profile

JBrow

1366 posts in 1069 days


#5 posted 02-04-2018 08:16 PM

Chadookydo,

Whether ceiling mounted cord and plug or wired directly into a box, including a switch in the table saw circuit would make changing blades and working on the saw safer. I prefer a switch to using a circuit breaker primarily because the switch seems more convenient.

View Kelly's profile

Kelly

2092 posts in 3093 days


#6 posted 02-04-2018 09:44 PM

I have several 120 and 240 outlets off my ceiling to avoid cords on my concrete floor

View ArtMann's profile

ArtMann

1081 posts in 965 days


#7 posted 02-05-2018 03:46 AM

Sorry to disagree with another poster but you are not going to find very many new table saws in the 3 hp range that are designed for being hard wired only. It wouldn’t hurt but is absolutely not required, whether it comes with a plug or not. I have had to install 240V plugs on several woodworking tools I have, including a table saw and a jointer/planer. There are two common 240V 20A plugs in use. One looks like a 120V plug but one of the blades is at right angle to the other. The other one is a twist lock and it is round. Tools don’t always come with a plug because the manufacturer doesn’t know what type outlet you have or whether it is 20A or 30A.

View Fred Hargis's profile

Fred Hargis

5097 posts in 2642 days


#8 posted 02-05-2018 11:52 AM

What Art said….don’t give too much concern to the hard wired stuff.

-- Our village hasn't lost it's idiot, he was elected to congress.

View rwe2156's profile

rwe2156

3094 posts in 1629 days


#9 posted 02-05-2018 03:02 PM

Rather than run a power cored 15 feet and have to buy a twist plug I simply run flex conduit to an outlet mounted to the side of the cabinet This also makes unplugging the machine much more convenient.

I attached the conduit to my dust collection ducts.

-- Everything is a prototype thats why its one of a kind!!

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