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Thread: Will the Laguna LT14 SUV bandsaw work with 20 Amp circuit breaker?

  1. #1
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    Will the Laguna LT14 SUV bandsaw work with 20 Amp circuit breaker?

    Hi.
    I have only 1 220v outlet in the garage for my Sawstop PCS 3HP and it's on a 20 amp circuit breaker. I want to buy the Laguna LT14 SUV bandsaw but the manual states that it needs to be plugged into a 30 amp circuit outlet. Can I just use the existing 20 amp outlet without tripping it?
    Thanks.
    Mike

  2. #2
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    I found more info on the web and I think this bandsaw should work on the 20 amp circuit since it only draws about 13 amp. I hope I am right.
    Mike

  3. #3
    If it only peaks at 13 then you should be fine. That seems like a fair amount at 220v. I thought my grizzly was more like 7 amps at 220v.

  4. #4
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    One thing I will say is that you will not damage your saw or your house wiring if you plug it in and try it. It seems a lot of manufacturers are now specifying a current capacity that exceeds the actual requirements for the machine by a substantial margin. Oddly enough, they are not providing a cord or recommending a plug type to sustain the higher current. I will just about bet that the LT14 provides a 12 gauge wire that isn't recommended to carry 30A continuously as well as a 20A rated plug. Some companies are updating requirements that have been around for decades. I'm guessing it is because they are getting tired of people complaining that their machine won't work on 20A when the real problem is a weak breaker.

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    Could it be the confusion originated with some of the cheap Chinese imports that are so inefficient where a 3 hp motor draws close to 30 Amps on start up compared to a Siemens or equivalent that only draws half of that.
    Just wondering

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    Quote Originally Posted by Art Mann View Post
    I will just about bet that the LT14 provides a 12 gauge wire that isn't recommended to carry 30A continuously as well as a 20A rated plug.
    Safe bet. The OP said it used 13amp, so why would they wire for 30a continuously?

  7. #7
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    Quote Originally Posted by Wade Lippman View Post
    Safe bet. The OP said it used 13amp, so why would they wire for 30a continuously?
    That is the point. Laguna is recommending 30A service for a machine that only requires 13A to operate. They are absolutely not choosing the circuit size to accommodate startup current (unless they are very ignorant, which I doubt). Normal breakers are designed to sustain double the rated current for somewhere around 20 seconds and a minute. They will sustain 5 times rated current for 5 or 10 seconds. Google "breaker trip curves" and see for yourself. They do that because so many devices have high starting current compared to quiescent current. Laguna would have to supply a very poor quality motor indeed to trip a 20A breaker with a 3 HP motor if the breaker is functioning correctly. It is really inexplicable why Laguna and many other companies (like Grizzly) are changing their 10 or 20 year old specs to require 30A service for a 3 HP motor unless they are trying to protect themselves against consumers who can't believe a 20A breaker can go bad and trip too low.

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    If it's any help, my LT18 is plugged into a 20A circuit. Never tripped a breaker in 5 years. But that has a different (Baldor) motor. I think you'll be OK, though.

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    Quote Originally Posted by Art Mann View Post
    That is the point. Laguna is recommending 30A service for a machine that only requires 13A to operate. They are absolutely not choosing the circuit size to accommodate startup current (unless they are very ignorant, which I doubt). Normal breakers are designed to sustain double the rated current for somewhere around 20 seconds and a minute. They will sustain 5 times rated current for 5 or 10 seconds.
    Perhaps Laguna gets a lot of complaints from people using that particular machine on 20a breakers. There is also the issue of voltage drop; if you are 100' from the breaker, perhaps there is too much VD on #12 to allow it to start reliably. Only Laguna knows their reason. Without some users attesting they have used that machine/motor on #12, we won't know if Laguna is just covering their butt.

    I had a JDS 3hp cyclone that tripped one brand new breaker, but worked on another brand new breaker. All my other 3hp tools were fine on the "weak" one.

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    Quote Originally Posted by John Seybold View Post
    If it's any help, my LT18 is plugged into a 20A circuit. Never tripped a breaker in 5 years. But that has a different (Baldor) motor. I think you'll be OK, though.
    2 weeks ago I saw a Laguna LT18 on craiglist for $1200 but had to pass because I thought this band saw won't work on a 20A circuit at all and I did not want to rewire and the saw is just too big for my shop. In regard to the LT14 SUV band saw, nothing from Laguna web site or manual states that the Leeson motor peaks at 13a. I found it on the internet and I think it's Rod Sheridon who posted the info.

  11. #11
    Quote Originally Posted by Ann View Post
    That is the point. Laguna is recommending 30A service for a machine that only requires 13A to operate. They are absolutely not choosing the circuit size to accommodate startup current (unless they are very ignorant, which I doubt). Normal breakers are designed to sustain double the rated current for somewhere around 20 seconds and a minute. They will sustain 5 times rated current for 5 or 10 seconds. Google "breaker trip curves" and see for yourself. They do that because so many devices have high starting current compared to quiescent current. Laguna would have to supply a very poor quality motor indeed to trip a 20A breaker with a 3 HP motor if the breaker is functioning correctly. It is really inexplicable why Laguna and many other companies (like Grizzly) are changing their 10 or 20 year old specs to require 30A service for a 3 HP motor unless they are trying to protect themselves against consumers who can't believe a 20A breaker can go bad and trip too low.
    The only <5 HP motors I have seen that specify a 30 A circuit are 2 HP 120/240 V motors being run on 120 V. The full load amp draw is right at 20 A and per the NEC they are supposed to have the supply circuit be 25% larger than the FLA.

  12. #12
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    Mike, that's too bad! It's a fantastic saw, and $1200 is 2/3 off retail. The footprint of the machine is actually pretty small. But then again, I don't know how big your shop is.

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    I should add: before I bought the LT18, I had an LT18SUV. I really didn't like it that much and I finally got rid of it. There's no comparison to the Italian-made saws. With the LT14SUV, try before you buy if you can.

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    Quote Originally Posted by John Seybold View Post
    I should add: before I bought the LT18, I had an LT18SUV. I really didn't like it that much and I finally got rid of it. There's no comparison to the Italian-made saws. With the LT14SUV, try before you buy if you can.
    I had a cheap Skil bandsaw from Lowes that my brother gave me a 5 years ago and only used it twice to cut some curve, one for a hand plane tote and the other for the rear fence of my table saw sled. This band saw died last week so I want to replace it with something that I can call it my last band saw because I don't want to go through the upgrading process like what I went through with the table saws until I got the Sawstop. So even if I can try the LT14SUV before I buy, I am not sure what if it helps since I don't have much experience with band saw if any. This is my hobby so the cost of the band saw is not really matter but space in the shop (garage) is since this is a oversize 3 car garage with 2 SUV in it along with my existing tools such as table saw, workbench, router table, MFT, planer, jointer, miter saw station, drill press cabinet...

  15. #15
    True words, Art! Does it really cost $1200? Perhaps I missed something. Thanks for explanation, Wade!

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