Transfer Switch Manual

Safety
2 Automatic Transfer Switch Owner’s Manual
• Keep the transfer switch enclosure door closed
and bolted at all times. Only qualified personnel
should be permitted access to the switch interior.
• In case of an accident caused by electric shock,
immediately shut down the source of electrical
power. If this is not possible, attempt to free the
victim from the live conductor but AVOID DIRECT
CONTACT WITH THE VICTIM. Use a
nonconducting implement, such as a dry rope or
board, to free the victim from the live conductor. If
the victim is unconscious, apply first aid and get
immediate medical help.
• When an automatic transfer switch is installed for a
standby generator set, the generator engine may
crank and start at any time without warning. To
avoid possible injury that might be caused by such
sudden start-ups, the system’s automatic start
circuit must be disabled before working on or
around the generator or transfer switch. Then
place a “DO NOT OPERATE” tag on the transfer
switch and on the generator.
• Any voltage measurements should be performed
with a meter that meets UL3111 safety standards,
and meets or exceeds overvoltage class CAT III.