Specifications

Safety: Warnings

Automatic Transfer Switch with Power Distribution 3

Installation

Install this ATS in accordance to the National Electrical Code (NFPA 75) in the United States, and

install in accordance to the Canadian Electrical Code (CSA C22.1-02) in Canada.

When connecting Source 1 to the ATS, install a circuit breaker to protect the ATS from over-current.

This circuit breaker must be rated at 250A. For 208V installations, the circuit breaker must have a

35,000 rms symmetrical ampere rating. For 480V installations, the circuit breaker must have a

65,000 rms symmetrical ampere rating.

Inspection and testing

This ATS shall be inspected weekly and tested monthly by a competent service person, in accordance

with NFPA 110.

Total power off procedure

To reduce risk of electric shock or injury to persons, disconnect all sources of supply before

servicing. To disconnect all sources of supply, follow this procedure:

1. Set the Automatic Operation switch on the dead front of the ATS to Disable.

2. Set the Source 1 switch on the ATS to OFF.

3. Set the Source 2 switch on the ATS to OFF.

4. Set the main Source 1 circuit breaker to OFF.

5. Set the main Source 2 circuit breaker to OFF.

6. If Source 2 is a generator, set the generator control switch to OFF, or set the generator control

switch to Manual, if OFF is not an option.

Operating environment