Multi-chamber GFCI housing apparatus
In accordance with one embodiment of the present invention a multi-chamber GFCI housing apparatus is provided. The multi-chamber GFCI housing includes a printed circuit board (PCB) chamber and an isolated cable chamber; each chamber is independently accessible and water resistant. In addition, the relative volumes, of each independent chamber permit sufficient housing volume to allow for sufficient spacing between electrical GFCI components and electrical PCB traces to prevent the risk of arcing between the components while also adhering to constrained dimensions according to electrical codes and standards.
1. A water resistant electronic circuit (EC) housing, the EC housing, comprising:
a printed circuit board (PCB) chamber;
a cable chamber, wherein the cable chamber is isolated from the PCB chamber; and wherein the overall length of the electronic circuit housing is less than or equal to 3.95 inches, and wherein the volume of the PCB chamber is substantially equal to 9.25 cubic inches, and wherein the internal volume of the cable chamber is substantially equal to 7.35 cubic inches, and the ratio of the PCB chamber volume to the cable chamber volume is substantially constant at 1.26 cubic inches;
a neutral contact blade having a center line substantially perpendicular to the EC housing, wherein the neutral contact blade is substantially 1.07 inches from the neutral contact blade center line to the face of the EC housing; and
a top housing, wherein the top housing comprises a groove circumscribing the top housing;
a bottom housing, wherein the bottom housing comprises a compression ridge circumscribing the bottom housing, wherein the compression ridge is mateable with the top housing groove, wherein the bottom housing comprises:
a bottom PCB chamber housing, wherein the bottom PCB chamber housing comprises a PCB chamber housing mating face and wherein the PCB chamber housing mating face comprises a second groove;
a bottom cable chamber cover, wherein the bottom cable chamber cover comprises a bottom chamber cover mating face and wherein the bottom chamber cover mating face comprises a second compression ridge mateable with the second groove; and
wherein the bottom PCB chamber housing and the top housing define a water resistant PCB chamber; and
wherein the bottom PCB chamber housing, the bottom cable chamber cover, and the top housing define a water resistant cable chamber.
2. The EC housing as in claim 1 wherein the second groove is disposed substantially between the PCB chamber and the cable chamber.
3. The EC housing as in claim 1 , wherein the PCB chamber housing mating face comprises a plurality of terminal connectors.
4. The EC housing as in claim 3 wherein the plurality of terminal connectors project substantially into the cable chamber when the PCB chamber housing is mated with the top housing.
5. The EC housing as in claim 1 further comprising:
a compressible gasket disposed within the groove circumscribing the top housing; and
the compressible gasket disposed within the second groove.
6. A water resistant ground fault interrupter circuit (GFCI) housing comprising:
a top housing cover comprising a length L 1 and a groove circumscribing the top housing;
a bottom PCB housing cover mateable with the top housing cover comprising:
a length L 2 , wherein L 2 is substantially 2.2 inches;
a first compression ridge disposed along a top housing mating surface;
a bottom cable cover mateable with the top housing cover and the bottom PCB housing cover comprising:
a length L 3 , wherein L 3 is less than or equal to 1.75 inches, wherein L 2 +L 3 =L 1 ;
a second compression ridge disposed along a second top housing mating surface;
wherein the bottom PCB housing cover comprises a second groove disposed along a bottom cable cover mating surface;
wherein the bottom cable cover comprises a third compression ridge disposed along a bottom PCB housing mating surface; and
a neutral contact blade having a center line substantially perpendicular to the GFCI housing, wherein the neutral contact blade is substantially 1.07 inches from the neutral contact blade center line to the face of the GFCI housing.
7. The GFCI housing as in claim 6 wherein the top housing cover comprises a width W 1 , wherein W 1 is greater than 1 inch and less than 2 inches.
8. The GFCI housing as in claim 6 wherein the bottom PCB housing cover assembled with the top housing cover comprises a GFCI circuit chamber, wherein the GFCI circuit chamber comprises a volume not less than 8.5 cubic inches.
9. The GFCI housing, as in claim 6 wherein the bottom PCB housing cover further comprises a terminal block.
10. The GFCI housing as in claim 6 wherein the bottom cable cover assembled with the top housing cover and the bottom PCB housing cover comprises a cable chamber.
11. The GFCI housing as in claim 6 further comprising a compressible gasket disposed along the groove circumscribing the top housing and the second groove disposed along the bottom cable cover mating surface.