DISTRIBUTION BOX
Each DISTRIBUTION BOX and controller must be grounded. On the US market, a 5.26 mm 2 (10 AWG) ground wire must be used, and in all other markets a 6 mm 2 must be used.
Ground wire of old-style distribution box
Home / Ground wire of old-style distribution box
26 mm 2 (10 AWG) ground wire must be used, and in all other markets a 6 mm 2 must be used. Electrical grounding establishes a safety mechanism within a home's wiring system. Grounding creates a dedicated, low-resistance pathway for excess electrical current to travel safely to the earth during a fault or short circuit. No ground wire in electrical box (very old building) - options for installing this switch? That little red tail under the cable clamp means you have BX or MC feeding that box, that metal jacket is your ground. The kitchen area outlets, all 2-prong, seem to be original to our 1950s California house, or perhaps modified in the late 1960s.
