Silvertip
Supreme Mariner
- Joined
- Sep 22, 2003
- Messages
- 28,771
Re: Power sockets
Your generator is a 220/240 volt unit so 10 gauge wire is adequate since there would be a little over 35 amps per phase. 10 gauge wire on 72 amp, 120 circuit would be too small. Ampacity tables are generally set up for a multitude of applications such as free air, in conduit, enclosures, etc. One size does not fit all when it comes to wiring things safely. Your vacuum cleaner very likely has a 10-12 amp motor. Feel the cord the next time you use it for a whole house cleaning job. That cord likely has 16 gauge wire in it and it will get warm. This is not a free air application since the cord is in a jacket. Even though 16 gauge wire is rated for 10 amps, here is an application where the ampacity limits are being pushed.
Your generator is a 220/240 volt unit so 10 gauge wire is adequate since there would be a little over 35 amps per phase. 10 gauge wire on 72 amp, 120 circuit would be too small. Ampacity tables are generally set up for a multitude of applications such as free air, in conduit, enclosures, etc. One size does not fit all when it comes to wiring things safely. Your vacuum cleaner very likely has a 10-12 amp motor. Feel the cord the next time you use it for a whole house cleaning job. That cord likely has 16 gauge wire in it and it will get warm. This is not a free air application since the cord is in a jacket. Even though 16 gauge wire is rated for 10 amps, here is an application where the ampacity limits are being pushed.