Exterior Linear Series User Manual 13
Safety limits for chains of fixtures
Warning! Read this section carefully and respect the safety limits given, or you may create
a risk of fire or electric shock. Consult your Martin® supplier if you have any questions
about installation safety.
Maximum total length of fixtures
The maximum permitted total length of fixtures, excluding cable, that you can connect in one chain is:
• 50 ft. (15.2 m) of fixtures at 120 V mains power
• 100 ft. (30.5 m) of fixtures at 240 V mains power
• 120 ft. (36.5 m) of fixtures at 277 V mains power
Maximum total length of cable
If a chain contains the permitted maximum total length of fixtures, the maximum total length of cable that
you can add to add to the chain (as a lead-in before the first fixture and between fixtures) is:
• 230 ft. (70 m) of cable at 120 V mains power if the chain contains the permitted maximum of 50 ft.
(15.2 m) of fixtures
• 328 ft. (100 m) of cable at 240 V mains power if the chain contains the permitted maximum of 100 ft.
(30.5 m) of fixtures
• 328 ft. (100 m) of cable at 277 V mains power if the chain contains the permitted maximum of 120 ft.
(36.5 m) of fixtures
Maximum total length of cable if total length of fixtures is less than the maximum
If the chain contains less than the permitted maximum length of fixtures, the maximum permitted length of
cable that you can add to the chain increases. See the table below for details.
Maximum lengths of fixtures and cable in chains of Exterior Linear fixtures
Voltage Maximum
permitted total
length of fixtures
in chain
Maximum permitted
total length of cable in
chain
Increase in maximum permitted
total length of cable if total length of
fixtures is reduced
110 – 120 V 50 ft. (15.2 m) 230 ft. (70 m)
For every 5 ft. (1.5 m) of fixtures
that you remove from the 50 ft.
(15.2 m) maximum total length of
fixtures in the chain, you can add
32 ft. (10 m) of cable to the 230 ft.
(70 m) maximum permitted total
length of cable in the chain.
220 – 240 V 100 ft. (30.5 m) 328 ft. (100 m)
For every 10 ft. (3 m) of fixtures that
you remove from the 100 ft.
(30.5 m) maximum total length of
fixtures in the chain, you can add
32 ft. (10 m) of cable to the 328 ft.
(100 m) maximum permitted total
length of cable in the chain.
277 V 120 ft. (36.5 m) 328 ft. (100 m)
For every 10 ft. (3 m) of fixtures that
you remove from the 120 ft.
(36.5 m) maximum total length of
fixtures in the chain, you can add
32 ft. (10 m) of cable to the 328 ft.
(100 m) maximum permitted total
length of cable in the chain.
In configurations where additional cable is mainly inserted towards the end of the chain, it may be possible
to exceed slightly the maximum permitted total cable lengths given above. However, you may only exceed
these maximum lengths in consultation with authorized Martin® personnel or agents. Exceeding the