BlackDragon Report post Posted March 31, 2023 I'm still waiting for my cobra and was wondering what are it's power needs. I'm having an electrician coming in the morning to do a few power upgrades and it came to mind that I was assuming the Class 4 ran on 110v 20amp. Is this the case or does it need 220v? Does it need a dedicated circuit or can I plug in to existing outlets without it tripping a breaker? I'm already installing a 220v 20amp outlet for my skiver and a dedicated 110v 20amp for a window a/c so adding another dedicated 110v isnt going to be a big issue. Quote Share this post Link to post Share on other sites
Handstitched Report post Posted March 31, 2023 Although I'm in Western Australia , I have a 441 clone and runs quite happily on single phase ( 240 v 10 amp Australia) without any issues. I appreciate your set up may be different. HS Quote Share this post Link to post Share on other sites
purplefox66 Report post Posted March 31, 2023 110 for a us cobra Quote Share this post Link to post Share on other sites
bladegrinder Report post Posted March 31, 2023 I have a Cowboy 4500, pretty much the same machine. it's plugged into a 110 outlet with a 20 amp breaker. on the same circuit is a deep freezer chest, a mini fridge and a couple lights. you'll be ok, these machines don't pull that much power. Quote Share this post Link to post Share on other sites
BlackDragon Report post Posted March 31, 2023 Great! Thanks Quote Share this post Link to post Share on other sites
Wizcrafts Report post Posted March 31, 2023 As long as your Class 4 came with a servo motor with a very small pulley, that feeds a 3:1 speed reducer, a 110v 15 amp circuit is more than enough power. The motor can draw between 500 and 750 watts at full power. But, with the speed reducer multiplying the torque 3x, your motor is actually drawing much less amperage and wattage to produce the results it is made for. If you sew its rated thickness of 7/8 inch of veg-tan leather, using #346 bonded thread on the top and bottom, with a #26 needle (think roofing nail size), it will still punch through without tripping a typical circuit breaker. In fact, the motor has built in protection against a severe overload. The thickest stack I've sew on my Cowboy CB4500 is exactly 1 inch. It was as tricky as Hell and required some special adjustments, but I got it done without any looping or ratting of the thread, on either side. I don't recommend this for beginners though. Keep it under the rated maximum thickness and you'll be good. But, make sure your sockets and their wire connections are tight, or soldered at both ends. Mind the ground wire! Quote Share this post Link to post Share on other sites
Handstitched Report post Posted March 31, 2023 4 hours ago, Wizcrafts said: The thickest stack I've sew on my Cowboy CB4500 is exactly 1 inch You're braver than me. I did a test of 22mm to see if it will sew as the ad in the magazine claims...yep, sewed it just fine, but very slowly ...and the needle was a bit hot.. no surprises there. Never had a job that needed that, but nice to know the machine is quite capable HS Quote Share this post Link to post Share on other sites
BlackDragon Report post Posted April 1, 2023 Thanks this helped me out when the electrician came out today. Quote Share this post Link to post Share on other sites
Quade Report post Posted April 3, 2023 (edited) 750 watts which is 1 hp is about 7 amps of current. That means full out, which you'll probably never see, is only 7 amps at 110. You could plug it into any existing outlet in your house. As long as you're not running a cooker on the same circuit. Edited April 3, 2023 by Quade Quote Share this post Link to post Share on other sites
