hi , I have a dc motorized valve that has a wire of about 1.5mm thickness , but my incoming power wire is 2.5mm thickness . If I join the 2 wires together, will there be heating in the wires in future ?

Thank you

 

Assuming the 1.5mm valve wires are correctly sized for the valve current then feeding them from 2.5mm supply wiring will not cause a problem.

 

Assuming the 1.5mm valve wires are correctly sized for the valve current then feeding them from 2.5mm supply wiring will not cause a problem.

Ahh ok thanks I was afraid it would burn up the wire connectors . Cause of the drop in wire size .

 

No, no problem and it happens everywhere. When you plug in a desk lamp, the lamp uses much smaller wire than the mains socket that it is connected to. Your 2.5mm wire is ultimately connected back to the electrical substation which uses MUCH thicker wire.

 

Ahh ok thanks I was afraid it would burn up the wire connectors . Cause of the drop in wire size .

The issue usually is in the quality of the connection that is important.
Poor connection = heating at that point.
Max.

 

On the electrical side of things there's a general rule that any time you change wire size you should fit a fuse, but this is more in electrical installations than inside equipment or devices.

 

On the electrical side of things there's a general rule that any time you change wire size you should fit a fuse, but this is more in electrical installations than inside equipment or devices.

That is only when the wire size gets smaller, not larger.

 

That is only when the wire size gets smaller, not larger.

I kind of thought that was obvious and didn't think it worth saying.

However it also isn't so simple, if your changing from multi-strand to single/solid core, or vice-versa, then some careful considerations have to be made as a single core can carry a much higher current than multi-strand for the same cross-sectional area.

 

hi , I have a dc motorized valve that has a wire of about 1.5mm thickness , but my incoming power wire is 2.5mm thickness . If I join the 2 wires together, will there be heating in the wires in future ?

Thank you

There should not be any problems if you have a good connection. The device (motorized valve) will only draw the current it requires.