I've been mulling over upgrading my miner recently and wanted to get some thoughts from real people who actually have some idea of what they're doing.
I first joined the pool in March of 2015 playing around with CPU and GPU mining mostly for fun. I eventually got a pair of those 5 chip LTC+BTC dual miners (orb
to be continued....
stop experiments with power cables, remember that your miner run 24/7 and u not everytime at home. Just pull 1-2 new 220V cable from the junction box. If your boiler/water-heater has already 220V, then the junc.box is already prepared for 220V.... so just set two new MB16's for each 220V cable one MB16' device, then u have all safe and one cable as reserve for the l7 or l9's if buy those. Use minimum 2mm² cables better 2,5mm², because they dont get hot easy. Dont use the same MB16/Mountpoint as your 220V Boiler/Heater because it has probably enough KW/h if its an electric ones.
u can snooze the L3's with two additional 100mm or 150mm pipefan's and two DUCT's (3d printer) from 120mm to 100mm/150mm. keep just an eye on the m³/h airblow!
this both are fine for L3's , just take one 100mm of the first link for BLOW-SIDE and one of the second link for the SUCTION-SIDE per one L3+/+ Miner. the cheaper one for the front/suction side both need 220V they are more than 50% quiet then the original FANs.
u can also use some little glass tanks or a building containing tanks for keeping fish and other water animals filled with Shell DIALA MINERAL OIL for immersion cooling a pump, two cooling devices for water cooling system and three 6" FANs per watercolling device to cooldown the oil, u need to dismount the FANs of the L3 or just cutting one cable per FAN then u dont need a extra cable wich fakes the FAN because the L3 dont has a immersion mode to bypass the fans for immersion cooling.
with blissz take 425MHZ and 13 (default) on Volting for significant Hashrate boost on the L3's