I need to hook up a timer switch for a 3 phase 240 volt electric motor what kind of switch do I need?

Question

its for a power washer on a drilling rig the ruffnecks leave it running and walk away and forget it so in return washhes out pressure regulator valves.

Answer 1

Go to the electrical supply store ..buy a nema12 enclosure inside put a relay (3pH) with 120volt coil...buy a simple timer like a 2hour 2 wire timers for a jacuzzi pool run in the 3pH/240 (?amp) wire size,,use a grounded current carrying conductor for the neutral to the switch (not two legs of the 3phase) wire the switch so it will control the coil to the relay . use the relay to send 3pH to the motor. You should get a light installed so you can see from a distance if its on or off....Green/red pilots...Or just tell the hands to tighten up or the regulators are coming out of their checks....From the E...

Answer 2

220 Volt Timer Switch

Answer 3

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You might be a little confused if you're looking at some specs. A 3-phase motor means that it needs 3-phase power to run. 3-phase voltages are usually given as "line-line/line-neutral" ratings. What you might be talking about is a 208/120V motor. That means that its line-line voltage is 208V (208 = sqrt(3)*120) and the line-neutral (aka - single-phase equivalent) voltage is 120V. The 120V is what normally comes out of your standard residential outlet. If you really had some odd configuration and wanted a 3-phase, 120/69V system, you'd have to get your own power supply; the US standard is 208/120V.

Answer 4

Purchase a three phase 240V relay with a 120V control coil and simply hook it up to a readily available 120V timer.

Answer 5

A switched three phase 240Vac timer.

Answer 6

My grandfather always used a willow.
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Answer 7

this doesn't involve ball bearings, jagged pieces of metal and shredded glass does it?