MEXICOWANDERER wrote:
The OP I think seeks a "recipe".
First of all my Respironics went NUTS on cheap inverter power. The images in the display window looked like Sanscrit. No Way Jose, will I ever try connecting to modified sine wave inverter again. I do not want a broken BiPAP.
So I decided to go direct. 12 volts from the coach to the socket on the BiPAP
- I took the power brick cord along to use the plug as an example of what I needed to buy
- A laptop repair service is a perfect place to have the plugs installed on a custom length cord
- But you will need the other end of the cord opposite the plug that goes into the cPAP
- Don't buy junk and 99% of do it yourself plugs are junk
- See my recommendation for a great quality cigarette lighter plug below
- The laptop repair place will SOLDER both plugs onto your new custom length power cord
- It will not pull apart.
https://www.bluesea.com/products/1010/12_Volt_Plug
LOOK in Amazon for this plug ---Blue Sea Systems 12 Volt Plug---
Now for the twin wire. not too big, not too small. Need very supple wire that is not glaringly obtrusive. Supple means it will be easy to wind up and will lay flat on the floor. Just in case you need to run wire to a distant cigarette lighter socket...
http://www.ebay.com/itm/SPEAKER-WIRE-50-FEET-18-Gauge-High-Quality-For-Car-Home-USA-SELLER-FAST-SHIP-/170879645576?hash=item27c9387788:m:myd8tew7JqMvoaEQnPhVv8Q
Carry everything into the laptop repair place and plunk it onto the counter. Being you have already measured out how long a wire is needed the rest of the work is in their hands, not yours.
"Just right size" means you can use this wire without or with the cPAP humidifier going. The price of the long length of this wire won't kill your budget.
Finally, when you go to pick up your assembled cable, take the cPAP along. Proof that it works right on the counter.
And yes the Blue Sea cigarette lighter plug is worth it. Lesser plugs are junk and you do not need to deal with a plug that fails.
very good advice.
when I did my install, I used the blue sea 12V receptical, that way I got a reliable robust receptical. and then I wired it through a 10A fuse with 12ga wire using marine jacketed wire which is tinned and very fine strand to a breaker in the pass through where I have inverter, solar panels etc. wire from west marine. they carry quality low voltage wire. Then for my first cpap I bought the mfg 12V adapter plug, which is a cig lighter and jack. For the resmed unit, 12V is a NO NO. they run on 24VDC, In fact most of the new units from virtually all mfg run on either 12VDC or 24VDC. NEVER on 120VAC. the 120VAC plug just goes to either a DC converter block that plugs into the unit, or into a internal 120VAC to 12V or 24V DC converter.
For the resmed I went to battery power solutions and bought there 12VDC to 24VDC converter designed specifically for the resmed. Resmed also sells one, but for about 5x the price. And in the past Battery power solutions sine wave inverter and Lithium Ion battery packs have been very robust and reliable for me.
they sell adapter plugs and sine wave inverters for most any recent cpap or bipap machine.
course there stuff is easy to come by in the states, But as so many things, much more of a problem for Mex, down south of the border.