I didn't think there would be a problem running it from the house board. The thing is I bought a welder and needed power to my garage. I know next to nothing about electrics and asked the sparkie to wire me up so I could run my welder etc. I am now realizing things haven't been done right. I should now of had an even bigger cable put in for the future incase I get a bigger welder but thought at the time 6mm cable was all I needed. But hey live and learn.