I have got one power cable going to a 2 gang switch and need to feed two seperate lights off it.

You have 2-gang switch.
Look at following illustration showing gang switches:
http://waterheatertimer.org/How-to-wire-switches.html#gang

Hot wire feeds one screw on first switch, and then jumpers to second switch.
Your jumper wire is connected wrong place.

Find hot wire... there will be 1 hot wire entering gang box.
Disconnect all wires, and separate for testing.
Turn power on and test each wire to bare ground wire... that will show the hot wire.

Sorry it is difficult to post question on fixya, or communicate with people answering free questions.

Gene h

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Copy following links:
Multiple Gang switches:
http://waterheatertimer.org/How-to-wire-switches.html#gang
Double switch
http://waterheatertimer.org/How-to-wire-switches.html#double

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Copy following link for switch wiring illustrations
http://waterheatertimer.org/How-to-wire-switches.html

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Copy following link for wiring 3-gang switch:
http://waterheatertimer.org/How-to-wire-switches.html#gang

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

If you want to control both the light and the fan using 3-ways, then just wire 2 sets of the 3-way circuits. For this you need two sets of 3-wire between the switches, and one 3-wire cable from the switch location to the fan/light box.

At box #1 (a 2 gang box), you will run a power cable (marked cable #1) into it. From there you run 2 sets of 3-wire cables (identified as cable #2 & cable #3) to the other switch location, which will also be a 2-gang box (box #2).

Also from box #1, you will run a 3-wire cable (cable #4) to the fan/light box (box #3).

Hook up is as follows:

Box #3: connect black of cable #4 to black (fan), connect red of cable #4 to blue (light), connect white of cable #4 to white (fan/light), and connect the bare to the green.

Box #2: Connect white of cable #2 to identified terminal on 1st 3-way switch (#3). Connect red & black of cable #2 to the remaining screws of 3-way switch #3. Next connect white of cable #3 to identified terminal of 2nd 3-way switch (#4), and connect black and red to remaining screws. Tie all grounds together and terminate to both switches.

At box #1, connect black from cable #1 to whites in cables #2 & #3, using a wirenut. Connect white in cable #1 to white in cable #4. Connect black and red in cable #2 to 3rd 3-way switch (#1) and connect black and red in cable #3 to 4th 3-way switch (#2). Connect black in cable #4 to identified terminal of 3-way switch #1, and connect red in cable #4 to identified terminal on 3-way switch #2. Tie all grounds together and to the switches

First you need to make sure that you do have a hot feed in this box. Do you have a circuit tester?

before u start make sure power is off before working with electrical lines ---start with the 12/2 coming into box black [power] white [ground-neutral] and u will have 3 separate lines for the lights so u will have 4 lines total coming in the box== with the 3 light lines take the white and strip back the plastic and connect [wire nut] all 3 to the 12/2 white line --now take the 12/2 black line and connect it to the first switch gold color screw- bottom screw -now take some wire about 2-3 inch strip both ends and connect from the 12/2 black wire connection on the switch and connect to the gold /bottom of switch 2 than do the same for switch 3 connecting the wire from switch 2 so u will have power feeding all 3 switches-- now connect the black lines for the lights to the other side of each switch and ur done

There is no simple answer. It all depends where your feed is and which switch is the "point". The point is the black wire bringing switched power to the fixture. Both the point, and the feed will be on the top black terminal on one or the other THREE way switches. The travelers go to the bottom two terminals and the neutral, usually white wire, just splices through. I hope this helps.

The proper way to wire two switches in a 2 gang switch box to control each light separately is as follows:

1. Make sure you have the power turned off at the breaker for this box.
2. Take the HOT (common, black wire) FEED wire and add (2) pieces of black wires to it with a wire nut.
3. Now you can put one of each of these black wires to the bottom screw of each light switch to provide power to both switches separately
4. Connect each separate wire to the (2) different lights to the top screw of each switch.
5. Twist all the bare ground wires together, leaving at least 7-8 inches at the ends untwisted for at least 2-3 of these wires.
6. Take (2) of these ground wires and connect them to the ground screws on each separate switch. If it is a metal box these area in, connect one ground wire to the box with a green grounding screw also, if not, cut off the extra ground lead near the twisted bunch.
7. Now twist all white (netural) wires together and install them all under one wire nut.
8. Make sure the bare wires are not near or touching the HOT screws and fasten the switches to the box.

You now have an approved and legal wiring for (2) separate light switches using the one power source (FEED) already in the box.

how do i wire up a 2 gang light switch and can you show me a diagram, from fuse box to switch and then out to 2 lights.