PLC_1

Grounding is the connection of all exposed current-carrying metal parts to earth.

• True
• Not True

Nano-PLCs have 15 to 128 I/Os.

• True
• Not True

An electrical shock results any time a body becomes part of an electrical circuit.

• True
• Not True

A shielded cable is a type of cable that uses an outer conductive jacket to surround the inner conductors that carry electrical signals.

• True
• Not True

A push command is a special software override that opens or closes an input device or turns an input component ON or OFF.

• True
• Not True

An electrical enclosure provides the main protection for a PLC from atmospheric conditions.

• True
• Not True

A metal ladder may not be used unless in combination with rubber insulating matting.

• True
• Not True

Never throw water on an electrical fire.

• True
• Not True

The NEC^® states that building and equipment grounding systems with single-made electrodes must have a resistance of less than 25 Ω.

• True
• Not True

PLCs are used to control electrical circuits that are DC, AC, or AC and DC.

• True
• Not True