This is an older ‘vacation’ type house, 1978.
pic 1, service panel - lower right breaker is labeled as inside panel, rag-wrap copper
pic 2, GE PowerMark Gold subpanel - the rag-wrap is attached to a 50 amp breaker. Different conductors feed the panel. ??
Didn’t make sense to me. Gonna call for evaluation by electrical guru.
Am I missing something here?