I am converting my JWTS-10CW2 to 230V, and I have a question about the
plug (I changed the wiring in the motor OK). Do people normally leave
this as a normal 3-prong plug? That seems like a bad idea because when
you run the power from the circuit box, it will look like a normal
outlet and will fry any 120V devices plugged into it by mistake. I was
thinking of changing it to a twist-lock 240V type.
Am I missing something? I've added several 120V circuits and just
wanted to ask the question to see what others have done before running
this 240V one.
No chance of a mistake because 240v and 120v stuff will not fit each other.
You have to change the plug, and you have to change the outlet. Well, you
do if you want to be either safe or legal...
The illustrations aren't not quite right, as a 20a outlet will also accept a
The 240v stuff is expensive; I don't know if that if because it is made for
higher voltages, because it is made in smaller quantities, or because
Walmart doesn't carry it.
Thanks for the replies guys. I have an idea. I dont really like the
idea of cutting the Jet plug in case I ever want to easily revert to
120V, so would it be ok to make an extension cord that had the normal
120V 3-prong recepticle on on end for the saw and a twist-lock 240V
plug on the other for the wallplug (I already bought the twist lock
plug, I like the locking feature)? This way I could extend the power
cord another 7 feet or so and this would really help out my shop
layout. The Jet cord is so short!
Would that be ok? I bought 10/2 wire for the 240 outlet I will wire
Don't do it...either cut the plug off the cord and save it or pull the wire
from the motor and install a new plug set. Otherwise, you'll STILL have a
110/120 volt plug that, in a hazy momoent, you or someone else, may try to
plug into a 110/120 outlet and then the motor is NOT going to like that.
Let's think safety out there, People!
"Easily revert to 110volt". None of its difficult, but its more hassle to
have to rewire the motor head than to connect a 3 prong plug in my opinion.
You would have to rewire the motor head anyway. I used a 220 plug that was
especially well designed for connection - just strip back 1/4" on each wire,
stick it in the right hole and tighten the screws.
Yes, I'm going to run a 30 amp service. I wasnt sure wheat it would
draw, so I figured 30 was overkill and safer. Plus, I had some 10/2
lying around. Is it legal to so 20 amp with 10/2 wire?
Rewiring the motor on the jet is really easy. They use a few spade
connectors that you have to position differently on a small terminal
strip. Changing the motor over to 220 took about 5 minutes.
But no one really said whether using that extension cord would be ok.
Assuming I would be the only one using the saw(and would label the
3-prong plug as a 220) would the extension cord (3-prong on one end
and twist-lock on the other) be a bad idea from a safety standpoint?
It seems like the cleanest to me. I looked into rewiring the saw from
the saw switch, but it looks like a pain to do.
Thanks for the replies so far!
NOOOOO! That violates code and good sense. Whack it off and put on a real
220volt plug. Avoide accidents. Twistlock is expensive and not really
needed. I've converted all my stationary tools to 220 volt and put in 220v
outlets every 3 feet. I couldn't make up my mind how to do the shop, so I
created some flexibility in the electrical area.
On 30 Dec 2003 22:45:29 -0800, email@example.com (Subw00er) wrote:
In addition to your other wiring issues, take care
that you redo the connections at the motor correctly
when switching from 120 to 240V.
It's easy if you just follow the diagram on the motor housing,
but it's also easy to get it wrong.
You will fry your motor if you do this wrong, and you won't
get a second chance. Unfortunately, the motor will run, then
you'll see smoke, and it's too late.
Yes, I contacted Jet just to make sure I wired it correctly. I ended
up placing two wires in the center of the terminal block together.
I decided to be safe and went out and bought some 12/3 wire and a 220V
plug and recepticle. I will cut the end of the Jet cord and wire up
the 220 plug. Then I will put a 220V socket on the end of the wire I
bought and the twist lock on the other side that goes to the wall
recepticle I already bought. I got 15 feet of the 12/3, but I'm going
to use as little as possible. The guy from Jet said that 20Ft should
be a maximum length to use from the saw's switch.
Thanks again for helping me sort this out safely!
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