HUBBELL TPDS, TPDL
Temporary branch power distribution unit
with ground fault protection for personnel
Installation and Operating Instructions
SPECIFICATION
These installation and operating instructions
apply to the following temporary power
branch distribution system components.
Do not discard these instructions, save for
future reference.
PORTABLE POWER DISTRIBUTION
UNITS
All units are rated 50 amps,125/250 VAC,
Single Phase, 5 milliampere leakage current
trip level. Downstream protection is not
provided through the 50 amp outlet. The 20
amp, 120 volt outlets are individually
protected by circuit breakers and GFCI
circuit modules.
Model
Number
20 Amp
Receptacle
TPDL
TWIST LOCK
TPDS
STRAIGHT BLADE
INTRODUCTION
Hubbell temporary power branch distribution
units equipped with GFCI products, will
protect you from shock hazards resulting
from ground faults.
Ground faults are current leaks and can
result in electric shock. Currents of only
60/1000 of an ampere can be fatal. The
GFCI protection provided by Hubbell
temporary power branch distribution units
significantly minimizes shock hazards.
Hubbell temporary power branch distribution
products, which are listed by Underwriters
Laboratories as Class A, Group I
interrupters, respond to fault currents as low
as 5 milliamperes, and will shut off the
current within 1/40th of a second.
The temporary power branch distribution unit is
designed to provide protection against electrical
shock hazards due to line-to-ground faults.
Although the GFCI Module does not limit the
magnitude of the fault current, and therefore
cannot prevent electric shock, it does limit the
duration of the shock to a period considered safe
for normally healthy persons.
GFCI Modules will provide protection against
ground faults only. They will not protect against
overloads or short circuits. There is no known
device that will guard against the electrical shock
hazard resulting from contact with both the “hot”
and neutral wires of the electric circuit.
ELECTRICITY IS DANGEROUS.
EVEN WHEN SAFETY DEVICES ARE
PRESENT, HANDLE WITH CARE AND USE
REASONABLE CAUTION.
LET CAUTION PREVAIL
The Hubbell temporary power branch distribution
unit is designed to be used on a grounded
electrical supply system. It will not operate when
supplied from a power source which is not
grounded. Over-current protection of the proper
rating, according to the National Electrical Code,
Article 240, must be used on the supply circuit
feeding the temporary power branch distribution
units.
TEST PROCEDURE
All Models
Connect the temporary power branch distribution
unit to an appropriate power source.
CAUTION
• Power is immediately available at the 50
amp outlet when the source is energized
on all models.
1. Verify all circuit breakers are in the “on”
position.
Wiring Device-Kellems
Hubbell Incorporated (Delaware)
185 Plains Road
Milford, CT 06460-8897
(203) 882-4800
PD2216
PRINTED IN U.S.A.
12/06
PD2216
PRINTED IN U.S.A.
12/06
English
