diy solar

diy solar

Can I use 10mm2 cable for 110/240v

workbox

New Member
Joined
Apr 12, 2021
Messages
45
Hi

Can I use 10mm2, 65A cable for 110/240v. When I asked vendor he said only for 12v system in the motorhomes. But copper is copper what's the differences except oversizing?
 
Depends on insulation (voltage rating, temperature rating, flammability rating, water resistance, UV resistance)
So "cable" is not just "cable"

For example "AJ" or "FLY" cable is only rated for max 75 volts
 
Depends on insulation (voltage rating, temperature rating, flammability rating, water resistance, UV resistance)
So "cable" is not just "cable"

For example "AJ" or "FLY" cable is only rated for max 75 volts
I see, my 10mm2 cable says " single insulated extra flexible Resistant to petrol, lubricating oils and diluted acids. Plain copper conductors - PVC insulated -30°C (-22F) - 70°C (158F)."

Why x10 times more copper cable can't be used for 110/240v with basic 10-15A pass through?

What is the science behind it?
 
10mm2 is roughly equivalent to 8 awg.
The problem is your wire doesn't have a voltage rating on the jacket.
BTW, I googled your quoted text and got 0 hits.

So the jacket is the problem then?

Someone please explain amateur user why I can't use 8awg /10mm2 copper wire for 110v/240v with 10-15amps in average. Is the PVC coating problem? But I have seen the exact same PVC coating used in commercial and home appliances.
 
So the jacket is the problem then?

Someone please explain amateur user why I can't use 8awg /10mm2 copper wire for 110v/240v with 10-15amps in average. Is the PVC coating problem? But I have seen the exact same PVC coating used in commercial and home appliances.
IMHO the problem is the voltage rating is not on the jacket.
What is the voltage rating for the wire?
 
So the jacket is the problem then?

Someone please explain amateur user why I can't use 8awg /10mm2 copper wire for 110v/240v with 10-15amps in average. Is the PVC coating problem? But I have seen the exact same PVC coating used in commercial and home appliances.
Jacket not having voltage rating or approval markings is first problem. Secondly 10mm2 cable is actually too big to fit in lots of the 120/240V hardware(light switches, wall sockets etc typically fit max 2.5mm2 wire)
 
IMHO the problem is the voltage rating is not on the jacket.
What is the voltage rating for the wire?

You are going in the wrong direction I think.

I try to figure out why copper wire cannot be used for high or low voltage applications?


The same copper that used everywhere or not, perhaps there is a chosen copper that deserves a higher voltage rating? And if no rating is bad and ugly copper?

Jacket not having voltage rating or approval markings is first problem. Secondly 10mm2 cable is actually too big to fit in lots of the 120/240V hardware(light switches, wall sockets etc typically fit max 2.5mm2 wire)
I agree my question in general if I can use 10mm2 for higher voltage. In other hand jacket rating is something to do with pvc coating issue or actual copper? Thanks
 
You are going in the wrong direction I think.

I try to figure out why copper wire cannot be used for high or low voltage applications?


The same copper that used everywhere or not, perhaps there is a chosen copper that deserves a higher voltage rating? And if no rating is bad and ugly copper?


I agree my question in general if I can use 10mm2 for higher voltage. In other hand jacket rating is something to do with pvc coating issue or actual copper? Thanks
Jacket rating and lack of approvalsfor the jacket is the problem.
Copper is the same and even much larger sizes than 10mm2 are used in high power installations. 63A 230V circuit might require 25mm^2 copper
 
Jacket rating and lack of approvalsfor the jacket is the problem.
Copper is the same and even much larger sizes than 10mm2 are used in high power installations. 63A 230V circuit might require 25mm^2 copper

Thank you.
Second question; can I use 60a 230v rated cable for low voltage 12-48v 60a circuit?
 
The rating of the jacket makes a huge difference. There is #8 landscape wire rated at 150vac and #8 l824 aviation wire rated at 5,000 volts.
Voltage is pressure, so just as water pipes are made of different materials that can handle different pressure and temp ratings before bursting, so is the wire.
 
The rating of the jacket makes a huge difference. There is #8 landscape wire rated at 150vac and #8 l824 aviation wire rated at 5,000 volts.
Voltage is pressure, so just as water pipes are made of different materials that can handle different pressure and temp ratings before bursting, so is the wire.
So you recon that if I choose higher voltage rated cable I can use same cable for low voltage applications?
 
The rating on the wire is its max. If it's 600v ac then you can use it on any ac power less than 600v.
 
Back
Top