PAUL A KELEHER
Electrician in Berlin, MA
License number
Massachusetts 8471
Issued Date
Apr 28, 1977
Expiration Date
Jul 31, 2019
Type
Master Electrician
Address
Address
Berlin, MA 01503
Personal information
See more information about PAUL A KELEHER at radaris.comName
Address
Phone
12 Colonial Rd, Dover, MA 02030
1 Belmont Rd, West Harwich, MA 02671
30 Pequot Rd, Mashpee, MA 02649
35 Aberdeen Dr, Scituate, MA 02066
35 Barnes Hill Rd, Berlin, MA 01503
Professional information
See more information about PAUL A KELEHER at trustoria.com
Device And Method For Testing An Electrical Power Branch Circuit
Device And Method For Testing An Electrical Power Branch Circuit
US Patent:
7791346, Sep 7, 2010
Filed:
Oct 4, 2007
Appl. No.:
11/867026
Inventors:
Robert K. Waite - Holden MA, US
Paul A. Keleher - Berlin MA, US
Paul A. Keleher - Berlin MA, US
Assignee:
KO Instruments, Inc. - Berlin MA
International Classification:
G01R 31/02
US Classification:
324424, 324537
Abstract:
A device and method for testing an electrical power branch circuit that includes hot, neutral and protective ground conductors and that carries alternating current. The device includes circuitry for determining the total available short-circuit current that can be carried by the neutral conductor, circuitry for determining the total available ground-fault current that can be carried by the protective ground conductor, and circuitry that, based on at least one of the determined short-circuit current and the determined ground-fault current, applies a short-circuit or ground-fault current to the electrical power branch circuit.
Circuit Breaker Tester
Circuit Breaker Tester
US Patent:
5736861, Apr 7, 1998
Filed:
Aug 2, 1996
Appl. No.:
8/691692
Inventors:
Paul A. Keleher - Berlin MA
Charles D. O'Neal - Bolton MA
Charles D. O'Neal - Bolton MA
International Classification:
G01R 3132
US Classification:
324424
Abstract:
A circuit breaker tripper includes a first charging circuit for charging an RC shorting time control circuit. A relay is connected to a pair of probes that are connected to an active line which enables a charging of the RC shorting time control circuit. Activation of a switch causes a relay to apply a short circuit across the active line, thereby causing a tripping of the circuit breaker. At the same time, a discharge circuit is activated which causes the relay open the short circuit after a preset period. Since the circuit breaker tripper relies on enabling sufficient current flow through the circuit breaker to trip it, a test circuit is provided which enables operation of the tripper only if the branch circuit is within a safe operating range for the circuit breaker tripper.