When using this 2w lamp with our T15 Black or White rubber extendable harness system you can connect the following number of 10m harness from a single 13amp start cable.
140 x 10m sections with Lamp Holders spaced every 1m (1400 Lamps)
70 x 10m sections with Lamp Holders spaced every 0.5m (1400 Lamps)