Assuming you just plan to run outdoors above ground get a 10 AWG cord specified for outdoor use. It will be a stranded conductor rather than solid.
In North America the smallest size breaker found in a home distribution panel is rated at 15 amps
The minimum wire size for a 30Amp breaker is typically 10 AWG for copper wire and 8 AWG for aluminum wire, according to the National Electrical Code (NEC). This wire size is necessary to safely carry the amount of current without overheating.
The biggest circuit breaker in any home is the main breaker located in your main breaker panel that is installed where your electrical service cable comes into your home.
No, you cannot use an existing 8 3 wire hooked to a 30amp breaker for a heater that requires 10 2 wire. The wire gauge and breaker size need to match the specific requirements of the new heater to ensure safety and proper function. You will need to upgrade the wiring to accommodate the 10 2 wire needed for the 5000-watt 240-volt heater.
The main breaker will have marking indicating size of electrical service, or if it is a fuse system....the fuses will have current ratings. If it is a subpanel, it might not have a main breaker. In this case you would have to look in the panel that the feed is coming from and find the size of the breaker that is feeding it. In either case you must look for the manufacturer's label that will have the maximum current the panel can handle, make sure the breaker feeding the panel doesn't exceed this rating.
AWG # 10 wire.
The recommended range breaker size for a circuit breaker in a residential electrical panel is typically between 15 to 20 amps.
In North America the smallest size breaker found in a home distribution panel is rated at 15 amps
The minimum wire size for a 30Amp breaker is typically 10 AWG for copper wire and 8 AWG for aluminum wire, according to the National Electrical Code (NEC). This wire size is necessary to safely carry the amount of current without overheating.
The recommended size for a main breaker in a residential electrical panel with a 125 amp main breaker is typically 150 amps.
A 100-A sub-panel would be fed from a 100-A breaker.
The biggest circuit breaker in any home is the main breaker located in your main breaker panel that is installed where your electrical service cable comes into your home.
50 amps
No, you cannot use an existing 8 3 wire hooked to a 30amp breaker for a heater that requires 10 2 wire. The wire gauge and breaker size need to match the specific requirements of the new heater to ensure safety and proper function. You will need to upgrade the wiring to accommodate the 10 2 wire needed for the 5000-watt 240-volt heater.
Depends on the wire size you are using. If the generator breaker is a 30 amp then install a 30 amp breaker.
50 amps
You can reduce the breaker size because that limits the current that can reach the main panel. There is no safety issue other than the significant danger in an unskilled person changing out a main breaker.