At the risk of piling on with too much information, here's the applicable NEC table:
FlexibleCordAmpacity.jpg
At the risk of piling on with too much information, here's the applicable NEC table:
FlexibleCordAmpacity.jpg
Beranek's Law:
It has been remarked that if one selects his own components, builds his own enclosure, and is convinced he has made a wise choice of design, then his own loudspeaker sounds better to him than does anyone else's loudspeaker. In this case, the frequency response of the loudspeaker seems to play only a minor part in forming a person's opinion.
L.L. Beranek, Acoustics (McGraw-Hill, New York, 1954), p.208.
The manual is misleading it says the 5hp saw should be hard wired to the wall and now cord used. Well that may be fine and dandy if it's in a huge shop where it can stay in the same place for the next 20 years, not all of us have that luxury. You have to remember manuals are written by the lawyers.
Power cords are always hard. Wiring in a wall always assumes it could see 100% use at maximum rated current. For a cord it's different. You're 5hp table saw isn't going to be drawing the maximum current all the time it's running. It'll have a surge when first turned on and then the draw will be much less. Even if you were to make the most demanding cut, unless you and 10,000 bft of lumber you were going to feed into the saw nonstop, it's not going to last very long. That's why an engineer may put a 14 awg cord on a piece of equipment that has a max load of 20 or even 25 amps. That being said I just use the standard wiring chart based on the FLA of the motor for a cord. You can always go a size bigger if the cord is getting hot (slightly warm isn't a problem) when being used.
Wow it just sounds like a penny pinch kind of thing sonthats what I did.
Well, you have a good cord, don't worry about it and move on and enjoy your saw.
You’re fine with the 10 awg. No worries.
I have a 5hp commercial washer on 10awg, SOOW extension cord. No way your saw will pull the amps that washer does going into the spin cycle with two horse blankets in it.
My 5hp air compressor is also on 10awg,SOOW cord.
The short length of 12awg is probably about as long as 12awg can be and still meet UL ratings.
Where do you find an electrician to come to your house for $100?? It is to laugh, as the saying goes. Think more like $250-300 just to show up, lots more if they actually do something. And, at that, licensed doesn't necessarily get you competent. If you spend the time and effort to learn enough about it to know whether your electrician knows what s/he's doing you might as well do it yourself unless the law requires otherwise. Even in MA you don't need a license to put a power cord on an appliance (or table saw).
Insulation can include a foot of sawdust on the cord.
Bil lD.
Bruce
The ampacity ratings being referenced are for SO,SOOW,SJOW, flexible cord. #10, AWG, SO cord will carry 30 amps. If the cable is to long, there are charts for ampacity and voltage change over distance
From Southwire's website.
http://cord.southwire.com/docs/Cord_...EC%2070000.pdf
"The first thing you need to know, will likely be the last thing you learn." (Unknown)
Motor rules are significantly different then for branch circuits, and you can have different wire wire and fuse/circuit breaker combos then what is allowed for a branch circuit, same thing also applies to air conditioning equipment, and welders.
With a 5 HP motor the circuit must be sized from NEC table 430.248 which lists a 5 HP 1Ø motor as 28A @ 230V and 125% of 28A is 35A so if Romex® is used it has to be 8AWG, if THHN is used 10 AWG is 35A (motor rules apply, not branch circuit) is fine. Even if a motor nameplate amperes is less then that NEC table it is still required to be sized from table 430.248.