Magnum 3000w inverter in 50amp system
Hello, If I go the expensive route I will install a Magnum MSH-3012-M Hybrid PSW inverter/charger. I would want the ability to run the entire RV (not all at once of course) via this unit so would ha...
Forum Discussion
Jeff:
I'm not quite sure I understand what you're talking about or maybe you've missed the point of the proposed inverter.
In my mind, with the proposed inverter you're going to lose the second leg of the 50 amp service so follow me along here.
I'm assuming from the pix of your load center that you have two hot legs incoming so in reality your 50 amp service is a 250 VAC circuit, correct?
The proposed inverter has only one hot leg (125 VAC) correct?
So for the proposed inverter to handle (all) the TH's electrical loads I'd change the shore power wiring that is now 3 wire (two hot legs & one neutral) to a standard 2 wire 125 VAC curcuit, run it through the inverter as shown in the manual then out to the trailer load center (neutral wire to the neutral bus bar and the hot leg to either one of the 50 amp main breakers and install a (line side) "jumper" from that now hot 50 amp breaker to the other 50 amp breaker).
I think that you need to realize that you are no longer going to have a "50 Amp Service" on your TH.
You're also going to have to change the charging logic of your battery bank as well and again, follow me along here.
If infact the WFCO is converter / charger or there already is a battery charger somewhere in the TH the new inverter which is a 'inverter/charger' will, as soon as it sees shore power, go into charge mode and start charging the battery bank. The inverter will also send shore power through to the house panel that if I'm correct will also start charging the house batteries as well, correct?
When not on shore power and in 'Inverter Mode' the house panel will again be energized and the house charger will start charging the battery bank using the power coming from the battery bank.
This too me may create a condition that may or may not damage either the inverter or converter and you may want to consult with both the Mfg'ers prior to doing any of the wiring mods.
If you would be so kind as to provide the page or section number in the Magnum manual where they're referring to the AC Neutrals that may help us identify what in fact they're referring to but I think it's just saying no common neutral bus meaning the incoming (shore power) neutral must first go through the inverter (as shown in the manual) and then onto the neutral bus bar in the (house) 120 VAC load center (again, as shown in the manual).
I'm not quite sure I understand what you're talking about or maybe you've missed the point of the proposed inverter.
In my mind, with the proposed inverter you're going to lose the second leg of the 50 amp service so follow me along here.
I'm assuming from the pix of your load center that you have two hot legs incoming so in reality your 50 amp service is a 250 VAC circuit, correct?
The proposed inverter has only one hot leg (125 VAC) correct?
So for the proposed inverter to handle (all) the TH's electrical loads I'd change the shore power wiring that is now 3 wire (two hot legs & one neutral) to a standard 2 wire 125 VAC curcuit, run it through the inverter as shown in the manual then out to the trailer load center (neutral wire to the neutral bus bar and the hot leg to either one of the 50 amp main breakers and install a (line side) "jumper" from that now hot 50 amp breaker to the other 50 amp breaker).
I think that you need to realize that you are no longer going to have a "50 Amp Service" on your TH.
You're also going to have to change the charging logic of your battery bank as well and again, follow me along here.
If infact the WFCO is converter / charger or there already is a battery charger somewhere in the TH the new inverter which is a 'inverter/charger' will, as soon as it sees shore power, go into charge mode and start charging the battery bank. The inverter will also send shore power through to the house panel that if I'm correct will also start charging the house batteries as well, correct?
When not on shore power and in 'Inverter Mode' the house panel will again be energized and the house charger will start charging the battery bank using the power coming from the battery bank.
This too me may create a condition that may or may not damage either the inverter or converter and you may want to consult with both the Mfg'ers prior to doing any of the wiring mods.
If you would be so kind as to provide the page or section number in the Magnum manual where they're referring to the AC Neutrals that may help us identify what in fact they're referring to but I think it's just saying no common neutral bus meaning the incoming (shore power) neutral must first go through the inverter (as shown in the manual) and then onto the neutral bus bar in the (house) 120 VAC load center (again, as shown in the manual).
