Milnor 30015V8Z, Руководство по установке

Страница: 17 / 59

2 Important Installation Precautions
BFUUUF01 / 2019405
BNUUUF01 C.4
External Fuse/Breaker, Wiring, and Disconnect
Requirements
BNUUUF01.C01 0000109242 D.2 C.4 A.4 1/2/20 2:14 PM Released
An external fuse
or
circuit breaker and a disconnect switch must be provided in the facility for
(and dedicated to) the machine. These may be in the same or separate, permanently mounted
electric boxes. Electric power and ground connections will be made between the incoming power
junction box on the machine and this external box (or one of the boxes).
Fuse or Circuit Breaker Size
BNUUUF01.R01 0000109241 D.2 C.4 A.4 1/2/20 2:14 PM Released
Refer to the “External Fuse and Wire Sizes...” document for your machine model. This document
will be found in the machine's installation manual, available from the parts department. Choose
the fuse or circuit breaker from the appropriate column of the table provided, as follows:
If a fuse is used
BNUUUF01.R01 0000109241 D.2 C.4 A.4 1/2/20 2:14 PM Released
— Match the fuse listed in the “Fuse” column for your machine's voltage. The specified fuse
sizes are consistent with the USA National Electric Code (NEC), section 430- 52, exception No.
2, Part B, which states: “The rating of a time-delay (dual-element) fuse shall be permitted to be
increased, but shall in no case exceed 225 percent of the full-load current.”
If a standard circuit breaker is used
BNUUUF01.R01 0000109241 D.2 C.4 A.4 1/2/20 2:14 PM Released
— Match the amperage rating listed in the “Breaker” column for your machine's voltage.
If an inverse time circuit breaker is used
BNUUUF01.R01 0000109241 D.2 C.4 A.4 1/2/20 2:14 PM Released
— Match the characteristics (amperage rating) of the fuse listed in the “Fuse” column for your
machine's voltage. When applied to an inverse time circuit breaker, the specified fuse sizes are
consistent with the USA National Electric Code (NEC), section 430-52, exception No. 2, Part C,
which states: “The rating of an inverse time circuit breaker shall be permitted to be increased, but
shall in no case exceed 400 percent for full-load currents of 100 amperes or less.”
Wire Size
BNUUUF01.R02 0000109240 D.2 C.4 A.4 1/2/20 2:14 PM Released
Use wiring no smaller than that listed for your machine's voltage in the “Wire size... ”column in
the “External Fuse and Wire Sizes...” document. The table value applies to runs up to 50 feet (15
Pellerin Milnor Corporation
15