Based on LINK FESTOON E27 BELT, 50CM SPACING using one POWER CABLE. Connect up to 665M of festoon belts with up to 1330 bulbs all from one plug. 

Bulb Watts	Max Set of Belts	Max length	Max No. Bulbs
0.6W	133	665M	1330
1.3W	61	305M	610
2W	40	200M	400
4W	20	100M	200
15W	5	25M	50