kulas44
Guru
Put an amp meter on it and show me 100 amps, not gonna happen. You have a 50 amp service, it is not cumulative. Although I am impressed that a Texan can do simple math
Put an amp meter on it and show me 100 amps, not gonna happen. You have a 50 amp service, it is not cumulative. Although I am impressed that a Texan can do simple math
I'm not sure why you guys think things melt at rated capacity.....
Our 44' trawler has 3 electrical inlets for shore power: 30 amp, 50 amp, a/c. We have only used 30 amp which sometimes leaves us a little short and the main circuit snaps off. We have been told that if we get the bigger cord and kick up to use the 50 amp inlet we will have more available juice but it will not operate the a/c. We have also been told that the only way we can run a/c from shore power is by using a 50 amp source (available at our marina) and getting a splitter and an additional 30 amp cord and run one cord from the splitter to the 30 amp inlet and the other to the a/c inlet. We are told this will allow us to run the a/c but it will be a separate circuit and will add no more available power for the rest of the vessel. Would appreciate any thoughts.
As a former electric company employee/lineman/wireman/forman/ of 15 years then lead electrician for an oil field electrical contractor I am possibly qualified on this subject. Most folks think they can "add" there electric service. It is still only and exactly what the breaker allows. If I have 2 air compressors each putting out 120 psi (the potential) then add them together do I get 240 psi.? No,,, but I can run a larger cfm load. I still have 120 psi. Same with electric service. Some large boats have 50 amp 3 phase service. The do not consider it to be a 150 amp service. Generally the captain of these boats actually does know his stuff.
I have 1 50 amp 120 volt cord going to two 30 amp breakers onboard. That's max for that 50 amp service and 50 amp cable. Run another cable from your neighbors box and you will have 100 amps available. I am not an electrician and will never be an electrician but that's what I did to enable a welder to work. The smiley means you can't jump all over me right?
Depends if it's 50A 125 or 50A 125/250....especially if the stove is electric
A water heater, air Conditioner, hair dryer can be almost 40 amps....someone using a large and small burner cooking breakfast on an electric stove can use another 15 amps easy...there's always a few parasitic chargers on a boat plus the main charger that may kick on at 5-10 amps...so 50 amps is easy to hit....having another 50 in reserve from a 50A 125/250 cord split into 2 busses is nice to have.............
50 amps is 50 amps.......unless you have two of them. 50 plus 50 is 100.
I have a 50 amp 125/250 service cord and its two 50 amp split phase leads give me 100 amps on my 40 foot boat. I will take you downtown Miami and give you an hour to draw a crowd and kiss your you know what if I don't have a 100 amps.
As a fellow Texan, 13 years in Friendswood even, Telco field guy in Seabrook I have to disagree.
Watts are watts are watts. Not amps are amps are amps. 50 amps @ 120 volts is 25 amps at 220, 12.5 amps at 440. It works backwards too, 50 amps @120=12 volts @ 500amps. All in Ohms Law
E=IR
No matter what the voltage is, no matter what the amps are the formula is P=EI. Watts converted to various voltages, amps will always show the ratio. Truly wack a mole. Push down amps voltage rises and visa versa.
...certainly the way it's designed....Alright, lets work backwards. 50 amps @ 125/250 is what I have dockside.
That means 50 amps @ 250. At 125 you get to double the amps. I could repeat the conversion to WATTS and back to amps but you already did that I could also discuss ohm's law but you did that too. The end result is still the same. I have a total of 100 amps @ 125 to use in my boat.
Ask your marina what size service you have. If you can call your semi planing twin 350 hp motor yacht a trawler I guess its not much of a stretch to call your 50 amp 125/250 service 100 amps. Just because the builder didnt call it a trawler is of no consequence, just like your service provider doesnt call your dockside 50 amp service a 100 amp. You can call it whatever you want to. Why not "two phase 100 amp". Other than there is no such thing as two phase power I dont see a problem with it. I do enjoy the debate, and yes this thread has really drifted. I hope the OP gets his boat figured out.
So, no one here can SHOW me any amperage over 50 on a 50 amp circuit. Is this correct ?