be cut in the housing of the metered panelboard 86 to correspond to a preexisting aperture 32 referring to fig2 23 a plurality of screws 88 within the metered panelboard 39 s housing 84 are loosened the first side 20 of the base 12 is placed up against the housing 84 so that the screws 88 pass through the large diameter portion 26 of the mounting holes 24 the base 12 is then lowered so that the screws 88 are placed in the small diameter portion 28 of the mounting holes 24 the screws 88 are then tightened at this point the gasket on the underside 69 of lip 67 is pressed against the housing of the metered panelboard 86 thereby forming a rain resistant seal between the wireway trough 10 and metered panelboard 86 the hub cap 100 and gasket 98 are removed to allow installation of the appropriate threaded hub mounting to pass the entry wires through into the wireway at this point electrical wires 90 92 and 94 may be run through the aperture 68 into the trough down the length of the trough 10 through the aperture 32 and into the housing 84 of the metered panelboard 86 lastly as shown in fig1 20 the cover 14 is installed on the trough 10 the front 52 of the cover 14 is positioned over the lip 38 of the base 12 the cover 14 is then rotated so that the lip 55 fits over the base 39 s first side 20 and the apertures 57 on the first side 50 engage the threaded studs 48 fastening means such as the wing nuts 96 may then be secured to the threaded studs 48 securing.