According to this page: http://ramproducts.com/what-i-the-difference-between-soow-and-sjoow-portable-cord/
the "J" is only rated for 300 volts. If this means 300 volts dc or peak it is not suitable for 240 VAC since the peak voltage will be 336 volts.
Based on this I would use the SOOW cable.
the "J" is only rated for 300 volts. If this means 300 volts dc or peak it is not suitable for 240 VAC since the peak voltage will be 336 volts.
Based on this I would use the SOOW cable.