Power box for a low voltage lighting system

Details Power box for a low voltage lighting system Power box for a low voltage lighting system

1991-02-13

1994-02-08

Picard, Leo P.

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electrical power distribution systems and devices

361730, 361394, 361426, 361428, 174 65R, 439449, 439465, H05K 114

Patent

active

052853497

ABSTRACT:
A power box (12) for a low voltage lighting system (10). Power box (12), which connects to a 120 VAC source via 120 VAC cable (15) and a plurality of low voltage light fixtures (14) via a 12 VAC cable (16), includes a "tortuous path" strain relief (40) including a first strain relief structure (41) in a base (19) having vertically spaced horizontal ribs (44, 46, 48) and a second strain relief structure (43) in a cover (28) having corresponding vertically spaced horizontal ribs (56, 54, 52). When base (19) and cover (28) are assembled, structures (41 and 43) align such that the ribs interdigitate or mesh to form the tortuous path strain relief (40) for the 120 VAC cable (15). Another aspect of the invention is the use of a standard spade lug connector (77) and a pair of "double-L" spade lug connectors (78) for making the internal and external 12 VAC connections to a step down transformer (60) and the 12 VAC cable (16), respectively. Another aspect of the present invention is a power box mounting system which includes a horizontal groove (90) on the rear wall (27) of power box (12), and a vertical slot (94) extending upwardly from groove (90) and also formed in the rear wall (27). Groove (90) and slot (94) are configured to receive a power box mounting screw (92), in that order. Still another aspect of the present invention resides in the fact that the base (19) and cover (28) of power box (12) can accommodate a variety of electrical components, including either a 36 watt transformer (60') or a 72 watt transformer (60").

REFERENCES:
patent: 4367005 (1983-01-01), Douty et al.
patent: 4493467 (1985-01-01), Borja
Excerpts of Toro blueprint drawing Nos. H211030 and H211032, both dated Mar. 31, 1987.

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