HI-POT TESTING
(MANUFACTURING COMPANIES ONLY)
NOTE: If the hi-pot test is performed from the plug on the
powercord, the test may only hi-pot the cord itself; it may
not test the RV wiring beyond the switch. The hi-pot test
should be performed from either the transfer switch
output
or from the main panel. Test as follows:
I. Turn on all circuit breakers in the panel.
II. Make sure the generator is off.
III. Make sure the powercord is unplugged. Verify that the
prongs on the powercord plug are protected so that the hi-
pot voltage won’t cause a fault reading from a short, or
cause bodily injury from electrical shock.
IV. Turn off or disconnect all appliances that would be dam-
aged by the hi-pot test.
V. Connect the hi-pot leads to:
a) Transfer switch ground bar
b) Transfer switch output terminals hot 1, hot 2 (if
present), and neutral.
VI. Energize the hi-pot and conduct test. This will hi-pot
test for leakage (short) between the current-carrying con-
ductors and the ground in the entire 120/240 VAC circuitry
beyond the transfer switch. In most cases it will also test
the powercord itself. Turn off the hi-pot.
VII. Do not test the transfer switch generator input. The
hi-pot will damage the time delay control module in
the transfer switch. If the generator wires to the switch
must be checked, disconnect the generator wires from the
transfer switch and connect hi-pot test leads to the loose
wires. Reconnect wires after testing.
VIII. If hi-pot test fails, there is a short in the system. The
next step is to isolate the location of the short. Turn off the
main breaker in panel and hi-pot test again. If the test still
fails, the fault is between the switch and the panel. Test
cord for shorted plug. If the test passes, turn on the main
breaker, and turn on all branch breakers except one. Re-
test each branch circuit individually until the shorted cir-
cuit is isolated. Repair the fault and retest. The hi-pot test
is successful when there are no more fault indications.
GENERATOR NOTE
It is never advisable to start or stop a generator under
load. To prolong the life of this transfer switch, and the life
of the air conditioner, microwave oven, and other appli-
ances, always turn those appliances off before starting or
stopping the generator.
MEDICAL APPLIANCES
IOTA Engineering L.L.C. will not knowingly sell an ITS
Transfer Switch for any life-support application. It is
strongly recommended that you do not operate any life
support equipment from a transfer switch. If the switch
should malfunction, or fail to operate due to other exter-
nal conditions, it is possible that all connected appliances,
including any life support equipment, will also shut down,
resulting in a risk of medical complications and potential
loss of life.
CAUTION
Do not install this or any electrical accessory in the bat-
tery compartment, or a compartment intended for storing
flammable liquids or liquids which produce flammable or
explosive fumes such as gasoline, etc. There are compo-
nents in the Transfer Switch which, in their normal opera-
tion, may cause arcing. In addition, the act of turning on a
light switch or unplugging the cord on an electrical appli-
ance can cause a spark, which can ignite any combus-
tible liquids or vapors. Therefore, do not install a trans-
fer switch in a compartment intended for storing flam-
mable liquids, and never store flammable liquids in-
side a compartment containing
any electrical device.
WARRANTY
All ITS Series Transfer Switches come with a two-year
warranty. IOTA warranties all Transfer Switches in the con-
tinental United States and Canada from defects in materi-
als or workmanship under normal use for two years from
date of retail purchase and will repair or replace any ITS
Transfer Switch under warranty found to be defective free
of charge. For complete warranty details, consult Customer
Service or visit www.iotaengineering.com.
Rev. 121702
68313-202
