Generator to breaker box 30 amp and 50 amp

[dreidel13]

Hey everyone.
I have the stuff to backfeed my generator through a 30amp breaker. I have the lockout kit that prevents both the breaker and main from being on at the same time. My question is this: My generator is strong enough to run a 50 amp and a 30 amp cord at the same time. Can I backfeed them both into the box at the same time? I would like to power all of my house and think it would if this is possible. I am not sure the 30 amp alone will do everything. The generator is 7500 running watts. I'll list my appliances needed to run below.
Navien tankless boiler for heat (2- pumps and three thermostats)
3/4hp water pump (well water)
Small chest freezer
Refrigerator
Double element water heater
Single element water heater
House lights (all led bulbs)

Extras:
Wi-fi, TV, Cable box, microwave, propane stove (electric lock)

Let me know what you think

 

[Megawatt]

Hey everyone.
I have the stuff to backfeed my generator through a 30amp breaker. I have the lockout kit that prevents both the breaker and main from being on at the same time. My question is this: My generator is strong enough to run a 50 amp and a 30 amp cord at the same time. Can I backfeed them both into the box at the same time? I would like to power all of my house and think it would if this is possible. I am not sure the 30 amp alone will do everything. The generator is 7500 running watts. I'll list my appliances needed to run below.
Navien tankless boiler for heat (2- pumps and three thermostats)
3/4hp water pump (well water)
Small chest freezer
Refrigerator
Double element water heater
Single element water heater
House lights (all led bulbs)

Extras:
Wi-fi, TV, Cable box, microwave, propane stove (electric lock)

Let me know what you think

Derdil13 I can tell you the you generator cannot run your whole house. The water heaters listed, the generator won’t be able to handle what you listed. I have a 10,000 watt generator 7500 running watts and I can’t run my heat, water heater, dryer or stove at the same time so I turn them breakers off. If you do it right and please don’t use a 30 amp and 50 amp cord and try to splice them together because you could get your phases crossed and ruin your generator. Just because you have a 30 and a 50 don’t mean you get 80 amps of power. You have a generator that’s Good for 7500 watts and that all you are going to get. Welcome to the forum and good luck

 

[dreidel13]

I figured it out yesterday. Generator will do just over 62 amps. I'm just going to put in a 50 amp. I had already bought some stuff for a 30 and I dont think I can return them, so I'll have to eat the cost on that.

 

[Megawatt]

I figured it out yesterday. Generator will do just over 62 amps. I'm just going to put in a 50 amp. I had already bought some stuff for a 30 and I dont think I can return them, so I'll have to eat the cost on that.

Well done my friend and if you ever need any help please come back

 

[DLRIDER]

Hello, I have a similar problem, long story short had a 18K Generac stolen. The outside female plug is 50amp. I now have a Cummins/Onan dual fuel 9500K but just a 30amp 240 plug. Is there a way to plug the 30amp into the 50amp plug like a dog bone to back feed for the home. Just need to run bare essentials in the minimal lights, most LED, refer and small chest freezer.
thank you DL

 

[Cruzer41922]

I bought a15000 watts generator, what size wire and breaker do i need to install my generator to my electrical panel

 

[Megawatt]

I bought a15000 watts generator, what size wire and breaker do i need to install my generator to my electrical panel

Install a 60 amp double pole breaker with # 6 wire

 

[Mpatton]

I figured it out yesterday. Generator will do just over 62 amps. I'm just going to put in a 50 amp. I had already bought some stuff for a 30 and I dont think I can return them, so I'll have to eat the cost on that.

Your generator can do 62 amps at 120 volts but most backfired plugs with lockouts are designed to feed 240 volts to the house, which is just 30 amps. Please verify how your backfeed plug is wired to the house and the expected input voltage with the electrician that put it in, remembering that if it really is some 120 volt input then you cannot ever run any 240 volt appliance or air conditioner. I strongly suspect it is 240 volts and you are already maxing your generator out with a single 30 amp plug set to 240.

 

[rrrru4ril]

I have a 9500 rate 12500 peak watt generator with a 50 amp 120/240 V plug and a 30 amp 120/240 V plug. Given the ratings I should be able to plug both the 50 amp plug and the 30 amp plug into separate transfer boxes. This should work because, assuming the 50 amp is fully loaded (almost never the case) the generator can still support 20 amps on the 30 amp plug with a surge power supporting an additional 20 amps. Now we all know we will need to keep everything properly loaded a likely distribute the 20 amps on the 30 amp plug to just lights and likely low power plugs. This assumes I only connect 120 V lines, no 220 V lines.

 

[Megawatt]

I have a 9500 rate 12500 peak watt generator with a 50 amp 120/240 V plug and a 30 amp 120/240 V plug. Given the ratings I should be able to plug both the 50 amp plug and the 30 amp plug into separate transfer boxes. This should work because, assuming the 50 amp is fully loaded (almost never the case) the generator can still support 20 amps on the 30 amp plug with a surge power supporting an additional 20 amps. Now we all know we will need to keep everything properly loaded a likely distribute the 20 amps on the 30 amp plug to just lights and likely low power plugs. This assumes I only connect 120 V lines, no 220 V lines.

My biggest worry about what you are wanting to do is cross the phases which will blow up

 

[rrrru4ril]

My biggest worry about what you are wanting to do is cross the phases which will blow up

I am aware of the phase issue. Each circuit will be kept separate from each other and I would use a manual transfer switch.

 

[WJP007]

So with all these generator questions I'm still a little unclear. An electrician that quoted a surge protector told me that I could only back feed a 30amp line from a generator. I have a 200amp panel and the generator has both a 240v/30a output and a 240v/50a output. The generator is a 17500 watt generac.

 

[Steven1011]

I have a 9500 watt generator - trying to back feed panel through a 30 amp breaker. shut off all 220 appliances and main power.... when switching on breaker generator breaker kicks out. What is going on

 

[Megawatt]

I have a 9500 watt generator - trying to back feed panel through a 30 amp breaker. shut off all 220 appliances and main power.... when switching on breaker generator breaker kicks out. What is going on

Please be sure that your main is off and the cable from the generator has to have 4 wires with one of them being a ground. Have you unplugged your cable and see if it still trips ? The cable should be # 8 minimum

 

[RoyleOne]

Is it okay to use a 50 amp breaker for back feed vs a 30 amp breaker? My gen produces 12K watts and I will use a 50 amp extension cord.