Author Topic: 24V Inverters?  (Read 1352 times)

Offline Greekman

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24V Inverters?
« on: November 30, 2017, 04:29:02 AM »
here is what i need your help on....

IIRC I have read that the 24V inverters are not that good an option, in the sense that they are lacking in performance against the 12V ones.
Is that true?

(though it stands to reason that having 2 solar panels and 2 12v batteries is a better option regarding efficiency, cable size etc)


Offline Carl

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Re: 24V Inverters?
« Reply #1 on: November 30, 2017, 05:26:26 AM »
  Depending on manufacturer ...you have no difference besides the 24 Volt supplied inverters require less thickness in the primary wire from battery to inverter and should operate slightly more efficiently than 12 volt input inverters.

Offline Greekman

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Re: 24V Inverters?
« Reply #2 on: November 30, 2017, 06:28:20 AM »
is there a chance you will find an honest 12V inverter cheap, but not an honest 24V?

also, supposing that one settles for a 24V system (power box) what is the method to get 12v outlets?
(for the cases that some of the appliances are not 12-24V spec'ed)

Online kid_couteau

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Re: 24V Inverters?
« Reply #3 on: November 30, 2017, 06:58:20 AM »
Taggin on this

Who do you guys like for a 12 volt Sine inverter? Economy version please.  ;D

Offline Carl

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Re: 24V Inverters?
« Reply #4 on: November 30, 2017, 06:59:16 AM »
is there a chance you will find an honest 12V inverter cheap, but not an honest 24V?

also, supposing that one settles for a 24V system (power box) what is the method to get 12v outlets?
(for the cases that some of the appliances are not 12-24V spec'ed)

As 120 volts and 12 volts is most common in the US,I find the 24 volt/120 or 240 out inverters at a lower cost and to get 12 volts from a 24 volt bank I just tap from one of the 12 or 2 of the 6 volt batteries to get 12 volts for equipment ,often I will attach 2 of the 12 volt taps to allow for balanced power use if I use 12 volts more often. My power banks actually use 2.2 volt 2300 Amp hour cells that I link together with heavy copper straps to form my banks with and I can easily tap the desired voltages I need from the 28 volt nominal banks as I need.

Offline Carl

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Re: 24V Inverters?
« Reply #5 on: November 30, 2017, 07:02:34 AM »
Taggin on this

Who do you guys like for a 12 volt Sine inverter? Economy version please.  ;D

I prefer XANTREX as they are the most 'industrial' inverters for the money ....in my opinion.

https://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=xantrex+sine+wave+inverter&rh=i%3Aaps%2Ck%3Axantrex+sine+wave+inverter

Offline FreeThinker

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Re: 24V Inverters?
« Reply #6 on: February 18, 2018, 06:56:42 AM »
The 24 (and 48) volt systems were the norm for off-grid homes in the 'olden' days anyway, when most panels were 12v and before MPPT charge controllers.  Less wiring (and less voltage drop in percentage terms) to have a single wire run of 24/48 volts from the panels on the roof or in the yard to the PWM charge controller in the house.  For short runs, with MPPT controllers, and directly powering 12vdc devices there's not much advantage to a 24v system.

I prefer XANTREX as they are the most 'industrial' inverters for the money ....in my opinion.

Xantrex/Trace is what we chose for our system and haven't been disappointed, running near constantly for 12 years.  SW4024 inverter/charger, C-60 charge controller, DC disconnect box, and T240 balancing transformer.   I'll upgrade to MPPT at some point, but hope that SW4024 outlives me as it's been discontinued and not much impressed with the models that replaced it.

Offline mountainmoma

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Re: 24V Inverters?
« Reply #7 on: February 18, 2018, 09:49:15 AM »
The 24 (and 48) volt systems were the norm for off-grid homes in the 'olden' days anyway, when most panels were 12v and before MPPT charge controllers.  Less wiring (and less voltage drop in percentage terms) to have a single wire run of 24/48 volts from the panels on the roof or in the yard to the PWM charge controller in the house.  For short runs, with MPPT controllers, and directly powering 12vdc devices there's not much advantage to a 24v system.

Xantrex/Trace is what we chose for our system and haven't been disappointed, running near constantly for 12 years.  SW4024 inverter/charger, C-60 charge controller, DC disconnect box, and T240 balancing transformer.   I'll upgrade to MPPT at some point, but hope that SW4024 outlives me as it's been discontinued and not much impressed with the models that replaced it.

I have been running a Trace (Xantrex) SW4048 inverter here at my house for over 19 years. Hot garage, cobwebs on the air intakes, etc... no problems. 48 Volt system, original panels are 12V, as you state.

Offline Greekman

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Re: 24V Inverters?
« Reply #8 on: February 18, 2018, 10:05:18 AM »
The 24 (and 48) volt systems were the norm for off-grid homes in the 'olden' days anyway, when most panels were 12v and before MPPT charge controllers.  Less wiring (and less voltage drop in percentage terms) to have a single wire run of 24/48 volts from the panels on the roof or in the yard to the PWM charge controller in the house.  For short runs, with MPPT controllers, and directly powering 12vdc devices there's not much advantage to a 24v system.

thanks for this...