I added a 220V line for my tablesaw in my basement shop. I also added a 110V drop off the same line.
Is the 110V line protected by the Breaker? Does this meet code? Is there a hazard?
Thanks, Brad
I added a 220V line for my tablesaw in my basement shop. I also added a 110V drop off the same line.
Is the 110V line protected by the Breaker? Does this meet code? Is there a hazard?
Thanks, Brad
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Replies
Assuming that the wire size is appropriate for the breaker size then the 120 receptacle is protected. A 2 pole breaker will trip if the current on EITHER leg trips.
AFAIK there is nothing in it that is against code. The code for multi-wire circuits does make note of this typic of installation.
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Like Bill said. Only downside I could think of is if you were running both at same time you would potentially have a possible volt drop on the "shared" leg. Not sure that would have any problem for the saw unless it was a pretty serious drop. But like he said it would probably trip before there was a problem.
But I leave it to those that know all that mumbo jumbo electrical stuff.
Thanks for the replies.
I won't use both circuits at the same time since the 220V is dedicated to my Tablesaw which is used stand alone (my dust collector is on a seperate dedicated circuit).
Brad
my father-in-law suggested to just short the 110V w/ a wire to try it out :)
That is what I expected but you never know when someone might be helping and two operations go on simultaneously. Probably still not a big problem. Just a guess/comment on my part.
I am probably going to do something similar when I finally get around to cleaning out the basement and setting up all the tools I have. I can't make up my mind whether I want to replace the old but troublefree fuse panel with new breaker panel.
I only get involved in these to get answers, not give them!! Thereby giving our knowledgeable guys an opportunity to point out the errors in my thinking.
What saw and planer do you have? I have a Ridgid TS-3612 and a DW733 that has never touched wood. Love the saw but use it a little less since getting EZ guide, just have not had the need for planing yet.
Rasconc,
I have a grizzly cabinet saw and dewalt DW735 planer. I'm happy with both, but if buying a new TS would consider the sawstop for safety reasons. $1k+ adder vs grizzly, but i've seen/heard of too many shop accidents recently.
Thanks again, Brad
FYI - most posters aren't going to open a file that big to see it. Here's a smaller version.
“The richest genius, like the most fertile soil, when uncultivated, shoots up into the rankest weeds..” – Hume
Thanks for making the file smaller. I developed the wire diagram in powerpoint, cut and pasted into paintbrush and didn't realize how big the file was until it was posted.
In my area 220 circuits are now limited to single purpose.
Used to be OK, and one often sees a 110 receptacle at the laundry coming off the 220 dryer circuit.
As Bill noted, the 110 circuit wiring leg has to be sized in accordance with the breaker size
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Edited 12/19/2006 1:06 pm ET by rjw
rjw,
thanks. I used 12g wire for the 220 and 110, so i'm good for the 20A breaker. thanks for pointing out the potential code issue. I can always yank out the 110V box if needed when i sell my house. Sounds like it shouldn't be a safety issue since the wire is spec'd right.
Brad