12 volt to 240 volt inverter for CPAP unit

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Anonymous Poster	12 volt to 240 volt inverter for CPAP unit 04/26/2007 2:58 AM
	What would be the maximum wattage inverter I would need to drive a CPAP machine that draws 60 watt. Also how long would a 12 volt 100 ah battery last.
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Electroman Guru Join Date: Jul 2006 Location: Dunstable, England Posts: 2821 Good Answers: 45	#1 Re: 12 volt to 240 volt inverter for CPAP unit 04/26/2007 9:35 AM
	Is a CPAP a medical Constant Pressure Airway Pump.... or is it something you've made up?? As for how long a 12 volt 100 Ah battery will last, well, it will last an awful long time as its made of long lasting plastic and lead and stuff... __________________ A little knowledge is a dangerous thing - Googling is far worse!
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Anonymous Poster	#3 In reply to #1 Re: 12 volt to 240 volt inverter for CPAP unit 04/26/2007 11:25 PM
	A CPAP is a medical Constant Pressure Airway Pump. I was asking if I run the CPAP through an inverter coupled to a 100 ah battery how long will the CPAP machine run for until the pump stops
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Snakers Power-User Join Date: Apr 2007 Posts: 178 Good Answers: 3	#4 In reply to #3 Re: 12 volt to 240 volt inverter for CPAP unit 04/27/2007 12:47 AM
	The Respironics units have a 12 volt DC plug that can run direct from a battery
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Anonymous Poster	#2 Re: 12 volt to 240 volt inverter for CPAP unit 04/26/2007 8:38 PM
	A 150 Watt sine wave inverter and at 60 Watt load 100AH battery 18 hours 20 max.
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The_curious_one Power-User Join Date: Aug 2006 Location: Edmonton, Alberta, Canada Posts: 284 Good Answers: 10	#5 In reply to #2 Re: 12 volt to 240 volt inverter for CPAP unit 04/27/2007 2:28 AM
	I love my CPAP to much to submit it to anything but a sine wave inverter. Most medical devices specify that if an inverter is to be used it should be a sine wave device. __________________ Semi-retired systems analyst, part time Ham radio operator, full time grandfather.
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North of 60 Guru Join Date: Mar 2007 Location: Iqaluit, NU. Canada Posts: 1854 Good Answers: 140	#6 Re: 12 volt to 240 volt inverter for CPAP unit 04/27/2007 9:48 PM
	Yes... are they not wonderful things, CPAP machines and grandchildren that is. We just became gransparents and the daughter and her newborn come home to our community Sunday. Seems to have generated a whole new level of interest in shopping on the part of my wife... oh well. __________________ Joe Contractor to Electrical Inspector, "What do you mean you are going to make me follow the code?".
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Anonymous Poster (2); Electroman (1); North of 60 (1); Snakers (1); The_curious_one (1)

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