![]() If the neutral on the dryer circuit bonds directly to ground, there is no more danger of the current in the neutral conductors of other circuits feeding back through the "neutral/ground" of the dryer circuit than there is of it feeding back through the grounding conductor of any of the other circuits. The neutral conductor carries current during normal operation. Dunno if this changes the picture or not.It might. Under the circumstances specified above, the only difference between the 10-30 and a 6-30 wiring configuration from the receptacle to the breaker box would be the color on the insulation of the grounding conductor. I'd add a 10-30P plug to the saw's power cord with the ground wire (green) connected to the L shaped blade on the plug and the two hot (red/black) conductors connected to the two slanted blades on the plug. Then I'd use the existing outlet to power the saw. used the existing outlet for the saw by unplugging the dryer before plugging in the saw so that there's no possibility of the dryer running while the saw is plugged in.was certain that the neutral wire from that outlet connected directly to the grounding bus.was certain that there were no other outlets on the circuit.It's playing fast and loose with the intent of the electrical code, but, if it were me doing it and I: ![]() The neutral (white) conductor effectively becomes the grounding conductor IF THERE ARE NO OTHER OUTLETS ON THE CIRCUIT. ![]() Is this the ONLY outlet on the circuit? If it is, and the neutral (white) wire in the circuit is connected to the grounding strip in the breaker box as it normally is, then there is no functional difference between this receptacle and the 2 pole grounding receptacle, NEMA 6-30R. The circuit can then provide both 220 and 110 volts to the dryer. Normally this would be wired so that the L shaped slot is connected to the Neutral (white) conductor and the two slanted slots to the two hot (red/black) conductors. The picture shows a NEMA 10-30R receptacle. I assume you've looked at the wiring just to be sure? Maybe there is a ground in there you can use and you'd just need to get a new 4-wire outlet? If it goes through a sub-panel, then the neutrals and grounds are separated and you might have a cause for concern although mine was wired like this and as I told you, I used it for a long time and had no issues but that doesn't mean anything, really. In other words, it is dual voltage: 240 V to run the dryer heater and 120 V to run the dryer light, motor, and maybe some other things.Īssuming (BIG ASSUMPTION) this is wired to your main house panel (and not through a sub-panel), the neutrals and grounds are bonded together. What it has, as you outline, is a red (hot), black (hot), and a white (nuetral) but no green or bare wire ground. I used such an outlet for my TS for a while until I redid my garage and had no issues. We've always had a gas-dryer so it only needed a 120 V outlet to run. It is mainly used for the older-style electric dryers. That is indeed a NEMA 10-30R: 30 Amp, 3 pole, 3 wire receptacle. Second, aside from the grounding issue are there any reasons that using that 220V outlet would not be adviseable? I seem to recall reading something once that suggested the 3-wire dryer outlets wouldn't work for welders, etc but don't recall the details. is there a safety aspect to using this for a tablesaw application? The dryer runs fine so I presume it will work, but I'm wondering if it is smart to use it for a saw. The "non-grounding" aspect of this bothers me. The house was built in 1984 if that makes any difference. it is a "3-wire non-grounding" outlet, which I THINK is a NEMA 10-30R. I realize the motor performance won't be much different, but it will free up the other outlets for other applications.īut I'm wondering about the outlet in the wall. The saw motor is 110/220 convertable so that is not an issue. ![]() I'd like to run my tablesaw from that 220V outlet. So there is a 110V circuit for the washer and a 220V outlet for the dryer. ![]() The good news is that the washer and dryer are located in the garage too. I hope to run some new circuits in the near future but in the meantime I'd like to make the best use of what is there. My garage/shop is a little light on electrical service - only one circuit for general garage use. ![]()
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