Tank3d printer build

[Boyan Silyavski]

Some electrical help here please.

If the heated bed consuption will be 2.1A at 220V, and 500W, then what cutoff fuse should i choose? I am looking at 150C 2.5A and 150C 5A. Which one will be better? I assume the 5A? As it will cut off at 150C in both cases, i am not sure about the amps.

[Doddy]

Some electrical help here please.

If the heated bed consuption will be 2.1A at 220V, and 500W, then what cutoff fuse should i choose? I am looking at 150C 2.5A and 150C 5A. Which one will be better? I assume the 5A? As it will cut off at 150C in both cases, i am not sure about the amps.

If this is a thermal cutoff that you're talking about then either is sufficient - either will handle the current draw, and disconnect. Of course, the over-current protection needs closer consideration; I'd not go as low as 2.1A, but 3A would be adequate (just make sure that all cabling and switchgear is rated at 3A).

[Doddy]

...and if you want to know what pees me off about cheap 3D printers - I've just had to replace the x-axis cable form on a near-new QIDI; what an unnecessarily tedious faff! Boyan - get a decent energy chain in there and use silicone cable. The cable form should be designed never to need replacing.

[Boyan Silyavski]

What i am looking is a thermal fuse, which apart the thermal protection, has Amp rating. So i thought before that i need 2 separate elements but it seems is 2 in 1. All cabling will be industrial servo cable rated for flex drag chain instalations. No crap stuff. I am just having also problems with the cables of the printer i borrowed.

here is link to the cheapest best quality cables i have found after long sleepless nights searches. These are not for the printer, i will look further, but just to see prices. have bought from there flexible thermoresistant cable for soldering gun also, which is superb for the price.
servos

http://www.tme.eu/en/details/str-c-p...lukabel/49637/


shielded cable for the proximity sensors:

http://www.tme.eu/es/details/str-c-p...lukabel/49632/





The cable chain is ready and tested. It had some final adjustments and i am 99% happy with it.. Its printed but i have designed it as a commercial quality chain. So its 2 in 1. What do you think? It seems to me bnetter than the one they use in the printer i have here





here are the files http://www.thingiverse.com/thing:1963745