Mamills;
the word "bucket" that refered to the draw out large breaker enclosure this is common on larger switchboard installment area.
typically they are rated over 1200 amp or larger [ 600v or less ] and med and high voltage will be in any ampacity size as well.
the common way the large breaker come out just like desk drawer go out of desk and bucket set up will have bussbar clips [ this part you have to be becarefull to get in correct phase other wise see you in somewhere in space ]
merci , marc
