Quiz on the Code - Industrial Machinery
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1. Industrial machinery requires which information on its nameplate located on the equipment enclosure?
(a) Electrical diagram number(s) or the number of the index to the electrical drawings
(b) Short circuit current rating of the machine industrial control panel
(c) Ampere rating of largest motor, from the motor nameplate, or load
(d) All the above
2. Industrial machinery _______installed where the available fault current exceeds its short-circuit current rating as marked.
(a) shall be
(b) under certain conditions, shall be
(c) shall not be
(d) (a) & (b) are correct
3. When installing a disconnect for a machine, _______.
(a) it is not required to have OCP
(b) the disconnect shall have a rating of 125% of the full load rating of the machine
(c) the disconnect shall have a rating of 115% of the full load rating of the machine
(d) it must be incorporated with overvoltage protection
4. Industrial machinery _______marked with the available fault current.
(a) shall be
(b) under certain conditions must be
(c) is not required to be
(d) over 25 kva is required to be
5. Industrial machinery with _______shall have overvoltage protection
(a) integrated circuits
(b) isolated ground circuits
(c) safety circuits
(d) SPGFCI equipment
Answers
1. (d) 670.3(A)(1-5)
2. (c) 670.5(A)
3. (a) 670.4(B)
4. (a) 670.5(B)
5. (c) 670.6
