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SAFETY for ELECTRICAL INSPECTORS
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UNDERGROUND SERVICE LATERALS
VOLTS / AMPS MEASUREMENT EQUIP
VOLTAGE MEASUREMENT METHODS
ZINSCO SYLVANIA ELECTRICAL PANELS
Independent tests of FPE Equipment: October 15, 2000, Poughkeepsie, NY. Tests by an independent forensic engineer confirmed failures of circuit breakers in a Federal Pacific Stab-Lok® residential electric panel that was contributed by a homeowner.
Replacement FPE Stab-Lok® circuit breakers are unlikely to reduce the failure risk of this equipment. We recommend that residential FPE Stab-Lok® electrical panels be replaced entirely or the entire panel bus assembly be replaced, regardless of FPE model number or FPE year of manufacture. We do not sell circuit breakers nor any other products.
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The breakers in this Federal Pacific Stab-Lok® panel were tested according to the Underwriters Laboratories UL Standard UL 489 calibration test.
This test, a subset of the entire UL 489 Standard, is intended to determine proper electrical circuit breaker function in response to overcurrent.
40-Amp breakers were tested at 135% of rated load and should trip within an hour. 20-Amp and 15-Amp breakers were tested at 200% of rated load and should trip within 2 minutes.
The FPE panel tested contained 19 circuit breakers.
10% (2 out of 19) of the Federal Pacific Electric Stab-Lok® breakers in the panel tested failed to perform properly. In the electrical industry, the failure rate for non-trip breakers is virtually zero.
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