### Instruction:

Extract the cause and effect entities from the following sentence:
Protective covers or caps shall be specified for use with electrical-connector plugs and receptacles in accordance with KSC-GP-864 when they are not connected

### Assistant:

VARIABLE: they
OR: or
CONDITION: connected
AND: and
KEYWORD: when
NEGATION: are not
CAUSE_1: they are not connected
EFFECT_1: Protective covers
EFFECT_2: shall be specified for use with electrical-connector plugs
EFFECT_3: receptacles in accordance with KSC-GP-864

