Subject	about volts/amps
Posted by	Marshall on September 17, 2002 at 8:17 PM
	This message has been viewed 82 times.
In Reply To	120K Mile TTZ fuel pump flowsheet posted by Chip(GinnMotorsports) on September 17, 2002 at 07:46 PM
Message	I have always read that electric motors want to draw the same wattage when they are running. As you know, watts =volts x amps. So if you decrease your voltage, the motor will draw more amps. Likewise, if you raise the voltage, the motor will draw less current. Lower current also means running cooler, so yes a fuel pump motor running on the higher voltage but less current will run cooler. To back this up, in a home shop if you have a machine that can run off either house voltage (110 volts) or a 220 feed, the motor will have ratings on it such as: (20A@ 110V) (10A@ 220V) And running it on a 220 line will result in cooler running motors on your machine. Also, as a benefit, since heat= energy wasted, if you look at the watts drawn by a motor rated at 220v and 10A and compare it to a motor running 110v and 20A, the hotter running motor (running on 110) needs to actually draw even more amps to compensate for the wasted energy that went to heat.
Follow Ups	120K Mile TTZ fuel pump flowsheet - Chip(GinnMotorsports) 19:46:48 09/17/02 where can I get this "trubo" model? ;) - Altersys 19:50:33 09/17/02 send me a Visa, MC number, I will hook you up (n/m) - Chip(GinnMotorsports) 19:55:04 09/17/02 hehe (n/m) - Altersys 14:09:54 09/18/02 new pump - Marshall 19:54:06 09/17/02 Any theory on the voltage/amp issue? (n/m) - Chip(GinnMotorsports) 20:04:21 09/17/02 yeah, I just posted it before I read your reply - Marshall 20:11:29 09/17/02 about volts/amps - Marshall 20:17:52 09/17/02 very true. (n/m) - SniPer SR71 (Dallas) 21:41:28 09/17/02 temperature - Technomancer 20:22:35 09/17/02 Re: temperature - Marshall 20:41:06 09/17/02 This is what I assumed... - Technomancer 21:29:38 09/17/02 good Work on the Fuel Pumps.. Now I know I need two.. - Carlos Ramirez 20:23:29 09/17/02 Just run ~20v, that should enough to cover you. - Chip(GinnMotorsports) 21:25:13 09/17/02 Not a good idea unless the motor is rated for it. (n/m) - MugenRacer 21:30:12 09/17/02 You do not run that voltage continually, just under high - Chip(GinnMotorsports) 22:18:47 09/17/02 I'd rather spend the money on a Pump first, than f'the motor - MugenRacer 12:25:46 09/18/02 If you monitor it, no chance of hurting engine. - Chip(GinnMotorsports) 13:02:29 09/18/02 Uh, at what point does the pump begin to cavitate? (n/m) - Technomancer 21:30:27 09/17/02 wonder what pressure is the sweet spot - Jefe 21:02:23 09/17/02 I thought JWT said it was good for 1000hp. What a - MikeH(Twin GT35BB Incon Z) 02:32:35 09/18/02 Great info, good discussion..thnx for posting... (n/m) - RSR 05:26:05 09/18/02 Watt=V*A Total 'power' comsumption is what you look at>> - AshsZ (Fab Whore, Ph.D) 06:51:22 09/18/02 Chip, thanks for sharing this information! (n/m) - B-Ster 07:12:06 09/18/02 Chip, so the Nismo GTR pump with a removed BOV will - George(boostsolutionsinc.net) 13:00:13 09/18/02 "Removed BOV" Blow-Off Valve? I do not understand - Chip(GinnMotorsports) 14:02:05 09/18/02 Jim said that the pump has a small BOV in it. They - George(boostsolutionsinc.net) 14:53:54 09/18/02
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