the problem is between these two breakers or you have a faulty or oversized breaker closest to the spa.
A short, which will trip the main breaker.
There are two things to think about here. First of all a 200 amp breaker will not physically fit into a 100 amp panel. This is so designed because the panel buss is not designed to conduct 200 amps before the current is cut off. A 100 amp rating on the panel is the maximum amount of current that the manufacturer states, that can be handled safely. Second if the 200 amp breaker is in the main panel then everything downstream from that breaker has to be rated for 200 amp conductivity. The wire size will have to be 3/0 from the breaker to the first over current device in the sub panel which will be the sub panel's main breaker. The sub panel can not be a load center but will have to be a combination panel. I doubt that the 100 amp sub panel's main breaker lugs would be large enough to connect the 3/0 cable.
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.
Simple. Your main electrical panel will have a "main breaker". This will be a two pole breaker, usually at the top of the panel. It will have a number on the breaker "handle" such as 150 or 200. This is the maximum number of amps your panel can supply. Most newer homes, 1975 and newer have a 200 amp service.
No, breaker panels should not be daisy-chained as it can create a safety hazard and overload the system. Each breaker panel should have its own dedicated circuit from the main service panel.
The maximum amperage capacity of the main breaker in a 100 amp sub panel with a main breaker is 100 amps.
The recommended size for a main breaker in a residential electrical panel with a 125 amp main breaker is typically 150 amps.
To replace a 200 amp main breaker in a residential electrical panel, follow these steps: Turn off the main power supply to the panel. Remove the panel cover to access the breaker. Disconnect the wires connected to the existing breaker. Unscrew and remove the old breaker. Install the new 200 amp main breaker in the same position. Connect the wires to the new breaker. Secure the breaker in place and replace the panel cover. Turn the main power supply back on and test the new breaker.
To properly add a breaker to a panel, first turn off the main power switch. Remove the panel cover and identify a free slot for the new breaker. Connect the breaker to the panel's bus bar and then connect the circuit wire to the breaker. Secure the breaker in place and replace the panel cover. Finally, turn the main power switch back on.
The maximum amperage capacity of a 100 amp main breaker in an electrical panel is 100 amps.
The maximum amperage capacity of a 150 amp main breaker in an electrical panel is 150 amps.
The maximum amperage capacity of a 100 amp panel with a main breaker is 100 amps.
The maximum amperage capacity of a 125 amp panel with a main breaker is 125 amps.
The voltage before the breaker is from the distribution panel's buss bars. This voltage is controlled by the panel's main breaker. To have no voltage on the terminal of the breaker means that either the breaker is shut off or it has gone into a trip position. If it has tripped push the handle of the breaker to the off position and then to the on position. This should reset the breaker. If the voltage is not present at the output terminal of the breaker after resetting it, then replace the breaker as it has a fault in it.
The maximum amperage capacity of the 125 amp main breaker in the electrical panel is 125 amps.
The outside breaker box is typically located near the main electrical panel, but outside the building or house.
A short, which will trip the main breaker.