CEP 8706GU User manual

CEP 6506GU
/G, 8706GU/G
Temporary branch power distribution unit
with Ground fault protection for personnel
Installation and Operating Instructions
SPECIFICATION
These installation and operation instructions
apply to the following temporary power
branch distribution system components. Do
not discard these instructions, save for future
Reference.
PORATBLE POWER
DISTRIBUTION UNITS
These units are rated for 50 amps, 125/250
VAC, Single Phase. The max. ampacity for the
50 amp unit is 100A @ 120V. The 20 amp, 120
volt outlets are individually protected by circuit
breakers and GFCI circuit modules.
Model
Number
20 Amp
Receptacle
6506GU
, 8706GU
U
-
Ground
6506G
, 8706G
Twist
-
Lock
INTRODUCTION
CEP temporary power distribution units equipped
with GFCI products will protect you from
electrocution 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 CEP temporary power distribution
units significantly minimizes shock hazards. CEP
temporary power distribution units,
which are UL listed as Class A, Group I
interrupters, respond to fault currents as low as
3-6 milliamperes, and will shut of the current
within 1/40th of a second. The temporary power
distribution unit is designed to provide protection
against electrical shock hazards due to line-to-
ground faults. Although the GFCI Module does
not eliminate the hazard of a 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 electrical circuit.
ELECTRICITY IS DANGEROUS.
EVEN WHEN SAFETY DEVICES ARE
PRESENT, HANDLE WITH CARE AND USE
REASONABLE CAUTION.
LET CAUTION PREVAIL
The CEP temporary power 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 Electric Code, Article
240, must be used on the supply circuit feeding
the temporary power distribution units.

TEST PROCUDURE
All Models
Connect the temporary power 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.
2. Push the test button on the individual GFCI
module. The unit should trip.
3. Push the reset button. The indicator light
should come on.
4. Repeat steps 2 & 3 for the remaining five (5)
modules.
TROUBLE SHOOTING
The GFCI Modules within the temporary power
distribution unit will trip whenever one or more of
the following abnormal conditions exist in the line
(supply) side circuit:
1. Either line (hot) conductor is transposed with
the neutral conductor.
2. Either line (hot) conductor is open
(disconnected)
3. There is an excessive voltage imbalance
between line 1 and line 2 circuits. This may be
the result of an open neutral conductor in the
supply circuit.
When the abnormal condition(s) in the supply
circuit is corrected, the unit may be reset for
normal use by completely removing and then
reapplying line power. It is recommended that
the GFC
I test procedure be repeated at this time.
When a GFCI module trips, attempt to reset it by
pressing the reset switch, being careful to look
for possible danger to personnel. If the module
resets, the fault was momentary and has
cleared. If it trips again immediately, the fault is
still present and the GFCI module is performing
its safety function. To locate the fault, disconnect
all loads and again try pressing the reset switch.
The module should reset. Reconnect the loads
one at a time.
The module will trip when the faulted load is
reconnected. Inspect all tools, appliances and
extension cords in the faulted load circuit,
repairing or replacing any that are not in good
condition.
NOTE: Tripping of a circuit breaker in these
models can only result from an overload or short
circuit condition in its individual load circuit.
When the fault in the load circuit is corrected or
removed, the circuit breaker can be reset for
normal use by switching handle to “OFF” position
and then to the “ON” position.
NUISANCE TRIPPING
All cables have some capacitive leakage. In a
120 volt system, there is a limited to the length of
cable which can be run before sufficient leakage
to ground will build up causing a GFI to trip.
Individual 120 volt branch circuit load cords
should be limited to 100 feet in length.
APPLICATION NOTES
Enclosure is a NEMA Type 3R; enclosures are
intended for use outdoors to protect the enclosed
equipment against windblown dust and water
and to provide for its operation when the
enclosure is covered by external ice or sleet.
HIGH VOLTAGE LIGHT
An illuminated high voltage light indicates the
input wiring is incorrect; check the power source.
CONTACT MONITOR LIGHT
The red monitor light is a welded contact
indicator. If the monitor light is on with the unit
tripped, it indicates the contact is welded, and
the unit should be replaced immediately -- there
is no GFCI protection. When the TEST button is
pressed, both the POWER light and MONITOR
light should go out, and come back on when the
RESET button is pressed.

MAINTENANCE & REPAIR
CAUTION: Electrical power supply MUST BE OFF AND DISCONNECTED before and during any
repair or maintenance. Repair and maintenance must be performed by a trained and competent
electrician.
WARNING: If any parts or components of this temporary distribution box appear to be missing,
broken or show signs of damage, DISCONTINUE USE IMMEDIATLEY! Do not modify these devices
in any way. Replace worn or damaged components. Failure to do so could cause serious personal
injury or death.
SEE PAGE 4 FOR PARTS BREAKDOWN

Parts Breakdown for:
6506G/GU, 8706G/GU,
7506G/GU, 7706G/GU
ID Part Number Description
1LID6G G BOX LID (Must have SN# for label)
2LEGG BOX LEG - PAINTED G SERIES
3FRAME7706G* RUGGED FRAME (for 8706 & 7706 Series)
46375H 50A 125/250V TL INLET- HUBBELL
56369H 50A 125/250V TL RECEPT- HUBBELL
67788 50A TL RECEPTACLE COVER, BLACK
7GAS7788* 50A TL RECEPTACLE GASKET
8520R1 20A 125V UG RECEPT-BLACK
9205R 20A 125V TL RECEPTACLE-MARINCO
10 306R 30A 250V TL RECEPT
11 7420 20A/30A TL RECEPTACLE COVER, BLACK
12 GAS7420* 20A/30A TL RECEPTACLE GASKET
13 7421 20A UG RECEPTACLE COVER, BLACK
14 GAS7421* 20A UG RECEPTACLE GASKET
15 INT INTERIOR CIRCUIT BREAKER PANEL
16 CB120NS SNAP 20A NGFCI BREAKER
17 CB230NS CB 30A NGFCI SNAP IN BREAKER
18 GF6095 GFCI MODULE FOR G SERIES BOXES
19 GBAR* GROUND BAR WITH SCREWS
20 NB* NEUTRAL BAR 6646601S
21 ENDCAP* END CAP FOR NEUTRAL BAR (2 per 1 NB)
* = Not Shown on drawing