How do you wire a 240V switch so that you can run an electric heater in the up position and a table saw in the down position?
If it is a simple two-pole switch marked on/off, you cannot create this situation. You could accomplish your intention with the use of a double-pole, double throw switch, center off [which would have six terminals]! Since you are controlling a saw, you would need a horsepower rated switch. Guessing that this is a domestic application, safety would suggest using a locking type switch. [But, then, I wouldn't put a table saw where I had electric heat either...] <><><> For a 220 run, the answer for those who want to know, is a 30amp DPDT(Double Pole/Double Throw), maintained contact switch. Leviton is one manufacturer who makes this switch although you can expect to spend anywhere between $60 to $90. IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
If you do this work yourself, always turn off the power
at the breaker box/fuse panel BEFORE you attempt to do any work AND
always use an electrician's test meter having metal-tipped probes
(not a simple proximity voltage indicator)
to insure the circuit is, in fact, de-energized.
Some custom homes were wired with with the receptacles that were switched. The receptacle was in a circuit with a switch controlling the the voltage to the receptacle. These circuits were mostly installed in living rooms. Table lamps were plugged into them so that when a person comes into the room, one switch would turn all of the table lamps. It could be that this switch has been replaced and installed up side down. So…
Without a switch being incorporated into the lamp the only way to turn it off is to unplug it. At times this can be inconvenient because the receptacle it is plugged into is not in a readily accessible position. The lamp is always in a convenient position so hence the switches position can be readily accessed.
Switches store the MAC addresses in an internal database called MAC Address Table. The entries in that table can be addresses learned by the switch or that can be entered manually by the switch administrator. This table is analogy to a router's routing table, only a switch operates at layer 2 whereas the router operate at Layer 3.
The ready position is a neutral starting position from which all table tennis strokes can be played. Whenever you are receiving service in table tennis you should take up the ready position. It's also the neutral position which you should try to return to after playing your stroke during a rally. From this position, you are able to watch and wait to see what your opponent will do and be ready and able to move…
Which has more potential position on table picture the ball in the middle of the table or at the end of the table?
All of the outlet-powered electrical devices in your house ... all the lights, TVs, plug-in radios, electric clocks, stereo, VCR, DVD player, computers, washing machine, hair dryer, table saw, ceiling fans, refrigerator, freezer, electric heater, blender, food processor, cellphone charger, microwave oven ... they're all connected in parallel across the service drop running from the utility pole to the electric meter and then into your house.