Nec review 1

Where caution, warning, or danger signs or labels are required by this code the label marking shall warn of hazards using effective _________

• words

• colors

• symbols

• any combination of words, colors or symbols

_______ at other than dwelling units shall be legibly field marked with the maximum available fault current , include the date of the fault-current calculation was performed, and be of sufficient durability to withstand the environment involved.

• service equipment

• Sub panels

• Motor control centers

• all of these

When modifications to the electrical installation occur that affect the maximum available fault current at the service, the maximum available fault current shall be verified or _____ as necessary to ensure the service equipment ratings are sufficient for the maximum available fault current at the line terminals of the equipment.

• recalculated

• increased

• decreased

• adjusted

The required working space for access to live parts of equipment operating at 300 volts-to-ground , where there are exposed live parts on one side and grounded parts on the other side, is ________

• 3 ft

• 3 1/2 ft

• 4 ft

• 4 1/2 ft

Working space shall not be used for _______.

• storage

• raceways

• lighting

• accessibility