Ok so i need to splice into some electrical cable for the power to my lights, fans etc. The closest power cable i have running near to where i will be growing is i think some 3 core in black tubing, you know the kind you use to run power from your house to your garage. About 150mm thick. I've looked round and the ways ive come up with are either piggy-backing into the connection by twisting the new cable around + & - or using T/Y connectors to split the power?
Can someone tell me what the industry standard is for tapping into a power cable ? just like to know before i go ripping off insulation ;D