Kufotokozera Kwachidule:

Ma board ogawa a HDB-A amapezeka ndi chitseko chokhazikika kapena chogawanika cha katundu. Ali ndi chitseko chachitsulo chokhazikika chokhala ndi "slam". Ma board onse amaperekedwa ndi mipiringidzo ya Neutral ndi Earth ndipo neutral yapangidwa kuti izungulire chipangizo cholowera kuti zitsimikizire kuti pali malo owonjezera a mawaya a zida zotulutsira. Chipangizo cholowera chiyenera kusankhidwa ndikuyikidwa ndi wokhazikitsa. Ma plates apamwamba ndi apansi a gland amachotsedwa ndipo amaphatikizapo ma knock-outs kuti agwirizane ndi kukula kwa ma conduds. Nan awmbly imaphwanyidwa kwathunthu ndipo hushart ndi imodzi mwa desian izi zimatsimikizira kuti nn "hot snots? idatuluka chifukwa palibe ma mechanical joints. Ma board adapangidwa kuti BSEN 60439-1 &3.