Electrical - LED Downlights for workshop - Home Improvement Stack - Also, dc voltage that excessive is one nasty piece of labor. It's far as aggressive as ac energy 10 times its voltage, certainly, many switch and relay makers derate 80-90 for dc. You may now not find a switch as a way to interrupt it with out arcing, brief of the spring-movement "snap switches" used in very antique houses (being vestiges of the dc age). Once it starts to arc, it will not recognize pity or remorse or fear and could now not stop except killed. The driving force might contain it to 320ma, however you'll want arc fault detection inside the motive force. I might at least want to run that during metallic conduit. Additionally you're managing as an alternative excessive voltages. Thwn or nm cable will suffice, however they now not qualify as "low voltage" beneath nec policies. You'll want to follow all of the formalities of right code wiring, and might run afoul of guidelines referring to voltages over 250v. 1) best layout for wiring these up, in terms of the most advantageous design for set up, and a pair of) the proper type of transformer, and 3) the handiest wiring harness, and cord gauge and the way to account for modern drop. Those are constant cutting-edge led luminaires which need to be matched to a particular driving force circuit, that is the element you name a "transformer" which become bundled with them. It has the ability to force one led luminaire. That offers you no preference in the matter. Each luminaire must be used with an identical driver module. In collection wiring, current is precisely the equal via every device, but voltages upload. Cutting-edge could be 320ma, or 0-320ma if you want to dim them without pwm. Voltage could be 20-30v x 10, or 200-300v.