Mitsubishi Electric 800 Series Installation Manualline page 47

A.2 Instructions for UL and cUL
(Conforming standard UL 508C, CSA C22.2 No.274-13)
A.2.1 General precautions
The bus capacitor discharge time is 10 minutes. Before starting wiring or inspection, switch power off, wait for more than 10 min-
utes, and check for residual voltage between terminal P/+ and N/- with a meter etc., to avoid a hazard of electrical shock.
A.2.2 Installation
The types of inverter listed on page 40 have been approved as products for a UL type12 enclosure that is suitable for Installation in
a Compartment Handling Conditioned Air (Plenum).
Install the inverter so that the ambient temperature, humidity and ambience of the inverter will satisfy the specifications.
(Refer to page 3.)
The drive must be installed in clean air according to enclosure classification.
Cooling air must be clean, free from corrosive materials and electrically conductive dust regarding the UL Type 12 enclosure. This
enclosure provides protection from airborne dust and light sprays or splashing water from all directions.
Branch circuit protection
For installation in the United States, Class T, Class J, or Class CC fuse, or UL 489 Molded Case Circuit Breaker (MCCB) must be pro-
vided in accordance with the National Electrical Code and any applicable provincial codes (refer to the tables on page 40).
For installation in Canada, Class T, Class J, or Class CC fuse, or UL 489 Molded Case Circuit Breaker (MCCB) must be provided in
accordance with the Canada Electrical Code and any applicable provincial codes (refer to the tables on page 40).
A.2.3 Wiring of the power supply and motor
Refer to the National Electrical Code (Article 310) regarding the allowable current of the cable. Select the cable size for 125% of the
rated current according to the National Electrical Code (Article 430).
For wiring the input (R/L1, S/L2, T/L3) and output (U, V, W) terminals of the inverter, use the UL-listed copper wires (rated at 75 °C)
and round crimping terminals. Crimp the crimping terminals with the crimping tool recommended by the terminal maker.
A.2.4 Short circuit ratings
l 400 V class
Suitable for use in a circuit capable of delivering not more than 100 kA rms symmetrical amperes, 500 V maximum.
WARNING
APPENDIX
41